Pentium III Processor Mobile Module:
Mobile Module Connector 2 (MMC-2)
Datasheet
Product Features
■Mobile Pentiu m III processor at speeds of
450 MHz and 500 MHz
■On-die, primary 16-K Instruction cache and
16-K Write Back Data cache
■On-die, 256-K L2 cache
—Eight-way set associative
—Runs at the speed of the processor core
■Fully compatible with previous Intel
mobile microprocessors
—Binary compatib le with all applicatio ns
—Support for MMX technology
■Supports streaming SIMD
■Power management features that provide
low-power dissipation
—Quick Start mode
—Deep Sleep mode
■Integrated math co-processor
■Integrated Active Thermal Feedback (ATF)
system
■Programmable trip point interrupt o r pol l
mode for temperature reading
■Intel 82443BX Host Bridge system
controller
—DRA M controller supports 3.3-V
SDRAM at 100 MHz
—Supports PCI CLKRUN# protocol
—SDRAM clock enable support and self-
refresh of SDRAM during Suspend
mode
—PCI bus control 3.3V only, PCI
Specificatio n Revision 2.1 compliant
■Supports single AGP 66-MHz, 3.3-V
device
■Two-piece TTP thermal transfer plate
(TTP) for heat dissipation
—The CPU TTP is made of nickel-plated
copper
—The BX TTP is made of aluminum
■Pentium III processor core voltage
regulation supports input voltages from
7.5V to 21.0V DC
—Above 80% peak efficiency
—Integr a t ed VR solutio n
245304-002
Datasheet 245304-002
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The Pentium III processor mobile module may contain design defects or errors known as errata which may cause the product to deviate from
published specifications. Current characterized errata are available on request.
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Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling 1-800-
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Copyright © Intel Corporation, 1999, 2000
*Other brands and names are the property of their respective owners.
245304-002 Datasheet iii
Pentium
III Processor Mobile Module MMC-2
Contents
1.0 Introduction.........................................................................................................................1
1.1 References............................................................................................................1
2.0 Architecture Overv ie w.............. .................... ................... ...... .................... ...... ...................2
3.0 Signal Information ..............................................................................................................4
3.1 Signal Definitions...................................................................................................4
3.1.1 Signal List.................................................................................................5
3.1.2 Memory Signal Description ......................................................................6
3.1.3 AGP Signals.............................................................................................7
3.1.4 PCI Signals...............................................................................................9
3.1.5 Processor and PIIX4E/M Sideband Signals...........................................11
3.1.6 Power Management Signals ..................................................................12
3.1.7 Clock Signa ls............... ....... ................... ...... .................... ................... ....13
3.1.8 Voltage Signals ......................................................................................14
3.1.9 ITP and JTAG Pins.................................................................................15
3.1.10 Miscellaneous Pins.................................................................................15
3.2 Connecto r Pin Assig nme nts..... ....... ...... ...... ....... ...... ....... ...... ....... ...... ....... ..........16
3.3 Pin and Pad Assignments...................................................................................18
4.0 Function al Des criptio n..................... ................... ................... ....... ................... ....... ..........20
4.1 Pentium III Processor Mobile Module MMC-2.....................................................20
4.2 L2 Cache.............................................................................................................20
4.3 The 82443BX Host Bridge System Controller.....................................................20
4.3.1 Memory Organization.............................................................................20
4.3.2 Reset Strap Options...............................................................................21
4.3.3 PCI Interface ..........................................................................................21
4.3.4 AGP Interface.........................................................................................22
4.4 Power Management............................................................................................22
4.4.1 Clock Control Architec ture.............. ....... ...... ....... ...... ....... ................... ....22
4.4.1.1 Normal State .............................................................................24
4.4.1.2 Auto Halt State .................. .................... ................... ....... ..........24
4.4.1.3 Stop Grant State.......... ...... ....... ...... ....... ...... ....... ...... ....... ..........25
4.4.1.4 Quick Start State .......................................................................25
4.4.1.5 HALT/Grant Snoop State ..........................................................26
4.4.1.6 Sleep State................................................................................26
4.4.1.7 Deep Sleep State......................................................................26
4.5 Power Consumption in Power Management Mode.............................................27
5.0 Electrical Specifications....................................................................................................28
5.1 System Bus Clock Signal Quality Specifications.................................................28
5.1.1 BCLK DC Specifications.........................................................................28
5.1.2 BCLK AC Specifications.........................................................................28
5.2 System Power Requirements..............................................................................30
5.3 Processor Core Voltage Regulation....................................................................30
5.3.1 Voltage Regulator Efficiency..................................................................30
5.3.2 Voltage Regulator Control......................................................................32
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III Processor Mobile Module MMC-2
iv Datasheet 245304-002
5.3.3 Power Planes: Bulk Capacitance Requirements....................................34
5.3.4 System Power Supply Protection Guidelines.........................................36
5.3.4.1 DC Power System Protection....................................................36
5.3.4.2 V_DC Power Supply..................................................................37
5.3.4.3 Overcurrent Protection..............................................................37
5.3.4.4 Current Limit Shift Point ............................................................39
5.3.4.5 Slew Rate Control .....................................................................41
5.3.4.6 Undervoltage Lockout ...............................................................43
5.3.4.7 Overvoltage Lockout .................................................................44
5.4 Active Thermal Feedback ...................................................................................48
5.5 Thermal Sensor Configuration Register..............................................................48
6.0 Mechanical Specification..................................................................................................49
6.1 Module Dimensions.............................................................................................49
6.1.1 Pin 1 Location of the MMC-2 Connector................................................49
6.1.2 Printed Circ uit Boa rd............. ...... ...... ....... ...... ....... ...... ....... ...... ....... ...... .50
6.1.3 Height Restrictions.................................................................................51
6.2 Thermal Transfer Plate .......................................................................................51
6.3 Module Physical Support ....................................................................................53
6.3.1 Module Mounting Requirements ............................................................53
6.3.2 Module Weight.......................................................................................54
7.0 Thermal Specification.......................................................................................................55
7.1 Thermal Design Power........................................................................................55
8.0 Labeling Information.........................................................................................................56
9.0 Environmental Standards.................................................................................................58
Figures 1 Pentium III Processor Mobile Module Block Diagram...........................................3
2 MMC-2 Connector Pad Footprint ........................................................................19
3 Clock Control States ...........................................................................................24
4 BCLK Waveform at the Processor Core Pins .....................................................29
5 VR Efficiency Chart ............................................................................................31
6 Power Sequence Timing.....................................................................................34
7 V_DC Ripple Current ..........................................................................................36
8 V_DC Power System Protection Block Diagram.................................................37
9 Overcurrent Protection Circuit.............................................................................38
10 Current Shift Model .............................................................................................39
11 Undervoltage Lockout .........................................................................................43
12 Undervoltage Lockout Model ..............................................................................44
13 Overvolt age Loc k out ...... ....... ...... ................... .................... ...... .................... ...... .45
14 Overvolt age Loc k out Mode l ........ ....... ...... ...... ....... ...... ....... ...... ....... ...... ....... .......45
15 Recommended Power Supply Protection Circuit for the System Electronics .....47
16 Simulation of V_DC Voltage Skew......................................................................47
17 Board Dimensions and MMC-2 Connector Orientation.......................................49
18 Board Dimensions and MMC-2 Connector—Pin 1 Orientation...........................50
245304-002 Datasheet v
Pentium
III Processor Mobile Module MMC-2
19 Printed Circuit Board Thickness..........................................................................50
20 Keep-out Zone.....................................................................................................51
21 82443BX Thermal Transfer Plate (Reference Only) ..........................................52
22 82443BX Thermal Transfer Plate Detail..............................................................52
23 CPU Thermal Transfer Plate (Reference Only)...................................................53
24 Standoff Holes, Board Edge Clearance, and EMI Containment Ring .................54
25 Product Tracking Code........................................................................................57
Tables 1 Connector Signal Summ ary ............ ...... ...... ....... ...... ....... ...... ....... ................... ......4
2 Memory Signal Descriptions..................................................................................6
3 AGP Signal Descriptions.......................................................................................7
4 PCI Signal Descriptions.........................................................................................9
5 Processor and PIIX4E/M Sideband Signal Descriptions.....................................11
6 Power Management Signal Descriptions ............................................................12
7 Clock Signal Desc ript ion s...................... ................... ....... ................... ....... ..........13
8 Voltage Descriptions ...........................................................................................14
9 ITP and JTAG Pins..............................................................................................15
10 Miscellaneous Pin Descriptions...........................................................................15
11 Connecto r Pin Assig nme nt.............. ...... ...... ....... ...... .................... ................... ....16
12 Connecto r Spe cific at ion s .... ................... ................... ....... ................... ....... ..........19
13 Configuration Straps for the 82443BX Host Bridge System Controller ...............21
14 Clock Sta te Characteris ti cs............. ...... ...... .................... ................... ....... ..........23
15 Power Consumption Values................................................................................27
16 BCLK DC Specifications......................................................................................28
17 BCLK AC Specifications at the Processor Core Pins..........................................28
18 BCLK Signal Quality AC Specifications at the Processor Core...........................29
19 System Power Requirements..............................................................................30
20 Vcore Power Conversion Efficiency ...................................................................31
21 Voltage Signal Definitions and Sequences .........................................................32
22 VR_ON In-rush Current.......................................................................................33
23 Bulk Capacitance Requirements.........................................................................35
24 Thermal Sensor SMBus Address........................................................................48
25 Thermal Sensor Configuration Register..............................................................48
26 Thermal Design Power Specification ..................................................................55
27 Environmen tal Sta nda rd s................ ...... ...... .................... ...... .................... ..........58
Pentium
III Processor Mobile Module MMC-2
vi Datasheet 245304-002
Revision History
Date Revision Updates
October 1999 1.0 Initial Release
February 2000 2.0 This revision contains the following updates:
•All PIIX4M references have changed to PIIX4E/M because both parts may
be used.
•Added Section 4.5, which now contains the power consumption values in
power management modes.
•Updated the entire Sections of 5.1 and 5.2 for clarity.
•Section 5.3.4 was updated for accuracy and clarity.
•The VR efficiency values were updated in Table 20 and Figure 5. Previously,
the values were shown at 1.35V.
•Updated Figure 6. An Intel SpeedStep technology signal was removed.
•Updated Table 24 to be consistent with the schematics.
•Added a note in Figure 17 for clarification.
•Figure 22 was added for additional thermal transfer plate detail.
•Specification clarifications were made to Section 6.2 and Section 6.3.1.
Pentium
III Processor Mobile Module MMC-2
245304-002 Datasheet 1
1.0 Introduction
This document provides the techn ical specifications for integrating the Intel Pentium III processo r
mobile module connector 2 (MMC-2) into the latest notebook systems for today’s notebook
market.
Building around this design gives the system manufacturer these advantages:
•Avoids complexities associated with designing high-speed processor core logic boards.
•Provides an upgrade path from previous Intel mobile modules using a standard interface.
1.1 References
Refer to the following documents for add itional information relating to the Pentium III processor
mobile mod ul e.
Mobile Pentium
III
Processor Datasheet
Intel 440BX AGPSet: 82443BX Host Bridge/Controller Datasheet (Order Number: 290633-001)
82371AB PCI-to-ISA/IDE Xcelerator (PIIX4) (Order Number: 290562-001)
Intel 82371MB (PIIX4E/M) Specification Update*
CK97 Clock Synthes i ze r/ Dri ver Speci f icat ion (OR -10 89)
Intel Pentium
III
Processor Mobile Mo dule MMC-2 Simulation and Valid ation Kit Rev. 2.0 (OR-
1781)
Intel Pentium
III
Processor Mobile Module System Electronics 100-MHz Layout Guidelines Rev.
1.0 (OR-1780)
Mobile Pentium
III
Processor/440BX AGPset Recommended Design and Debug Practices
(RDDP-A) 100 MHz Rev. 2.0 (SC-2760)
66/100MHz PC SDRAM Unbuf fered SO-DIMM Specification Rev 1.0*
Intel Mobile Module Design Guide (AP-590)
Pentium® II Processor Mobile Module MMC-2 Insertion & Extraction User Manual Rev 1.0*
Mobile Pentium II Processor Mobile Module 400-Pin BGA Connector Assembly Development
Guide Rev. 1.0*
Focused Discussion on Intel Mobile Modules Design for Mfg. & Best Methods for MHPG
Customers Rev. 1.0 (OR-1385)
EMI Design Guide (ORMD6-0859)
Intel Mobile Module Newsletters*
Intel Mobile Module Thermal Diode Temperature Sensor Application Note*
Intel MMC-2 Standoff/Receptacle Height Spreadsheet*
AGP Interface Specificatio n Revision 2.0*
*Available now, contact your Intel Field Representative
Pentium
III Processor Mobile Module MMC-2
2Datasheet 245304-002
2.0 Architecture Overview
A highly integrated ass e mbly, the Pentium III processor mobile module contains the mobile
Pentium III processor core that runs at speeds of 450 MHz and 500 MHz with a 100-MHz processor
system bus speed (PSB).
The Intel 440BX AGPset provides immediate system-level support and includes the PIIX4E/M
PCI/ISA Bridge and the 82443BX Host Bridge. The PIIX4E/M provides extensive power
management capabilities and supports the Intel 82443BX Host Bridge. A notebook’s system
electronics must include a PIIX4E/M device to conn ect to the Pentium III processor mob ile modu le.
Key features of the Intel 82443BX Host Bridge include: the DRAM controller supporting SDRAM
at 3.3Vwith a burst read at 4-1-1-1; a PCI CLKRUN# signal to request the PIIX4E/M to regulate
the PCI clock on the PCI bus; the 82443BX clock enables Self-Refresh mode of SDRAM during
Suspend mode and is compatible with SMRAM (C_SMRAM) and Extended SMRAM
(E_SMRAM) modes of power management; and E_SMRAM mode supports write-back cacheable
SMRAM up to 1 MB.
The thermal transfer plates (TTP) on the mobile Pentium III processor and the 82443BX Host
Bridge p rovide heat dissipation and thermal attach po ints for the manufacturer’s thermal solution.
An on-board voltage regulator converts the system DC voltage to the processor’s core and I/O
voltage. Isolating the processor voltage requirements allows the system manufacturer to
incorporate different processor variants into a single notebook system. Supporting input voltages
from 7.5V to 21.0V, the integrated modu le voltage regulator enables an above 8 0% peak ef ficiency
and de-couples the processor voltage requirements from the system.
Also incorporated is active thermal feedback (ATF) sensing, com pliant with the ACPI Specification
Rev 1.0. Figure 1 illustrates the block diagram of the mobile module.
Pentium
III Processor Mobile Module MMC-2
245304-002 Datasheet 3
Figure 1. Pentium III Processor Mobile Module Block Diagram
400-Pin, Board-to-Board Connector
CPU
Voltage
Reg
Memory Bus
82443BX
"Northbridge"
V_3
ATF
Sense
Mobile
Pentium III
Processor
Core
R
-
G
T
L
Sideband Pullup (V_CPUPU)
V_DC (7.5V- 21.0V)
Processor Core Voltage
VTT
GCLKO
GCLKI
HCLK0
PSBAGP Bus
PCLK
PCI Bus
Memory Bus
DCLKO
DCLKWR
SMBUS
VTT
Clock Driver (V_CLK)
PIIX4E/M Sidebands
Pentium
III Processor Mobile Module MMC-2
4Datasheet 245304-002
3.0 Signal Information
This section pr ovides information on the signal groups for the Pentium III pro cessor mob ile
module. The signals are defined for compatib ility with future Intel mobile modules.
3.1 Signal Definitions
Table 1 provides a list of signals by category and the corresponding number of signals in each
category. For proper signal termination, please contact your Intel Field Representative for more
information.
Table 1. Connector Signal Summary
Signal Group Number of Pins
Memory 109
AGP 60
PCI 58
Processor/PIIX4E/M Sideband 8
Power Management 7
Clocks 9
Vol tage: V_DC 20
Vol tage: V_3S 9
Vol tage: V_3 16
Vol tage: V_5 3
Vol tage: VCCAGP 4
Voltage: V_CPUPU 1
Vol tage: V_CLK 1
ITP/JTAG 9
Module ID 4
Ground 45
Reserved 37
Total 400
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III Processor Mobile Module MMC-2
245304-002 Datasheet 5
3.1.1 Signal List
The following notations are used to denote signal type:
I Input pin
O Outpu t pi n
O D Open-drain output pin requiring a pullup resistor
I D Open-drain input pin requiring a pullup resistor
I/O D Input/Open-drain output pin requiring a pullup resistor
I/O Bi-direction a l input/output pin
The signal description also includes the type of buffer used for a particular signal:
GTL+ Open-drain GTL+ interface signal
PCI PCI bus interface signals
AGP AGP bus interface signals
CMOS The CMOS signals, depending on functional group, are 1.5V, 2.5V, or 3.3V.
Pentium
III Processor Mobile Module MMC-2
6Datasheet 245304-002
3.1.2 Memory Signal Description
Table 2 provides descriptions of the memory interface signals.
Table 2. Memory Signal Descriptions
Name Type Voltage Description
MECC[7:0] I/O
CMOS V_3 Memory ECC Data: These signals carry Memory ECC data during
access to DRAM.
ECC is not supporte d on the mobile module.
CSA[5:O]# O
CMOS V_3 Chip Select (SDRAM): These pins activate the SDRAMs. SDRAM
accepts any command when its CS# pin is active low.
DQMA[7:0] O
CMOS V_3 Input/Output Data Mask (SDRAM): These pins act as synchronized
output enables during a read cycle and as a byte mask during a write
cycle.
MAB[9:0]#
MAB[10]
MAB[12:11]#
MAB[13]
O
CMOS V_3
Memory Address (SDRAM): This is the row and column address for
DRAM. The 82443BX Host Bridge system controller has two identical
sets of address lines (MAA and MAB#). The mobile module supports
only the MAB set of address lines. For additional addressing features,
please refer to the
Intel
440BX AGPSet: 82443BX Host Bridge/
Controller Datasheet (Order Number: 290633-001).
MWEA# O
CMOS V_3 Memory Write Enable (SDRAM): MWEA# should be used as the
write enable for the memory data bus.
SRASA# O
CMOS V_3 SDRAM Row Address Strobe (SDRAM): When active low, this
signal latches Row Address on the positive edge of the clock. This
signal also allows Row access and pre-charge.
SCASA# O
CMOS V_3 SDRAM Column Address Strobe (SDRAM): When active low, this
signal latches Column Address on the positive edge of the clock. This
signal also allows Column access.
CKE[5:0] O
CMOS V_3 SDRAM Clock Enab le (SDRAM): SD RAM clock enable pin. When
these signals are deasserted, SDRAM enters power-down mode.
Each row is individually controlled by its own clock enable.
MD[63:0] O
CMOS V_3 Memory Data: These signals are connected to the DRAM data bus.
They are not terminated on the mobile module.
Pentium
III Processor Mobile Module MMC-2
245304-002 Datasheet 7
3.1.3 AGP Signals
Table 3 provides descriptions of the AGP interface signals.
Table 3. AGP Signal Descriptions
Name Type Voltage Description
GAD[31:] I/O
AGP V_3
AGP Address/Data: The standard AGP address and data lines. This
bus functions in the same way as the PCI AD[31:0] bus. The address
is driven with FRAME# assertion, and data is driven or received in
following clocks.
GC/BE[3:0]# I/O
AGP V_3
AGP Command/Byte Enable: This bus carries the command
information during AGP cycles when PIPE# is used. During an AGP
write, this bus contains byte enable information. The command is
driven with FRAME# assertion, and byte enables corresponding to
supplied or requested data are driven on the following clocks.
GFRAME# I/O
AGP V_3
AGP Frame: GFRAME# is not used during AGP transactions. This
signal remains deasserted by an internal pullup resistor. Assertion
indicates the address phase of a PCI transfer. Negation indicates that
the cycle initiator desires one more data transfer.
GDEVSEL# I/O
AGP V_3
AGP Device Select: This signal provides the same function as PCI
DEVSEL#, and it is not used during AGP transactions. The 82443BX
Host Bridge system controller drives this signal when a PCI initiator is
attempting to access DRAM. DEVSEL# is asserted at medium
decode time.
GIRDY# I/O
AGP V_3 AGP Initiator Ready: GIRDY# indicates the AGP-compliant target is
ready to provide all write data for the current transaction. This signal
is asserted when the initiator is ready for a data transfer.
GTRDY# I/O
AGP V_3 AGP Target Ready: This signal indicates the AGP-compliant master
is ready to provide all write data for the current transaction. GTRDY#
is asserted when the target is ready for a data transfer.
GSTOP# I/O
AGP V_3 AGP Stop: This signal provides the same function as PCI STOP#,
and it is not used during AGP transactions. GSTOP# is asserted by
the target to request the master to stop the current transaction.
GREQ# I
AGP V_3 AGP Request: AGP master requests for AGP.
GGNT# O
AGP V_3 AGP Grant: GGNT# provides the same function as on PCI.
Additional information is provided on the ST[2:0] bus.
PCI Grant: Permission is given to the master to use PCI.
GPAR I/O
AGP V_3 AGP Parity: A single parity bit is provided over GAD[31:0] and GC/
BE[3:0]. This signal is not used during AGP transactions.
PIPE# I
AGP V_3
Pipeli ned Request: PIPE# is ass erted by the current master to
indicate that a full-width address is to be queued by the target. The
master queues one request each rising clock edge while PIPE# is
asserted.
SBA[7:0] I
AGP V_3 Sideband Address: This bus provides an additional conduit to pass
address and commands to the 82443BX Host Bridge System
Controller from the AGP master.
RBF# I
AGP V_3 Read Buffer Full: Indicates if the master is ready to accept
previously requested, low-priority read data.
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8Datasheet 245304-002
ST[2:0] O
AGP V_3 Status Bus: This bus provides information from the arbiter to an AGP
Master on what it may do. These bits only have meaning when GGNT
is asserted.
ADSTB[B:A] I/O
AGP V_3 AD Bus Strobes: These signals provide timing for double-clocked
data on the GAD bus. The agent providing data drives these signals,
and the signals are identical copies of each other.
SBSTB I/O
AGP V_3 Sideba nd Strobe : This signal provides timing for a sideband bus.
The SBA[7:0] (AGP master) drives the sideband strobe.
Table 3. AGP Signal Descriptions
Name Type Voltage Description
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III Processor Mobile Module MMC-2
245304-002 Datasheet 9
3.1.4 PCI Signals
Table 4 provides descriptions of the PCI signals.
Table 4. PCI Signal Descriptions
Name Type Voltage Description
AD[31:0] I/O
PCI V_3 Address/Data: The standard PCI address and data lines. The
address is driven with FRAME# assertion, and data is driven or
received in the following clocks.
C/BE[3:0] I/O
PCI V_3 Command/Byte Enable: The command is driven with FRAME#
assertion, and byte enables corresponding to supplied or requested
data are driven on the following clocks.
FRAME# I/O
PCI V_3 Frame: Assertion indicates the address phase of a PCI transfer.
Negation indicates that the cycle initiator desires one more data
transfer.
DEVSEL# I/O
PCI V_3 Device Select: The 82443BX Host Bridge drives this signal when a
PCI initiator is attempting to access DRAM. DEVSEL# is asserted at
medium decode time.
IRDY# I/O
PCI V_3 Initiator Ready: Asserted when the initiator is ready for data transfer.
TRDY# I/O
PCI V_3 Target Ready: Asserted when the target is ready for a data transfer.
STOP# I/O
PCI V_3 Stop: Asserted by the target to request the master to st op the current
transaction.
PLOCK# I/O
PCI V_3
Lock: Indicates an exclusive bus operation and may require multiple
transactions to complete. When LOCK# is asserted, non-exclusive
transactions may proceed. The 82443BX supports lock for CPU
initiated cycles only. PCI initiated locked cycles are not supported.
REQ[4:0]# I
PCI V_3 PCI Request: PCI master requests for PCI.
GNT[4:0]# O
PCI V_3 PCI Grant: Permission is given to the master to use PCI.
PHOLD# I
PCI V_3
PCI Hold: This signal comes from the expansion bridge. It is the
bridge request for PCI. T he 82443BX Host Bridge will drain the DRAM
write buffers, drain the processor-to-PCI posting buffers, and acquire
the host bus before granting the request via PHLDA#. These
processes ensure that GAT timing is met for ISA masters. The
PHOLD# protocol has been modified to include support for passive
release.
PHLDA# O
PCI V_3 PCI Hold Acknowledge: The 82443BX Host Bridge drives this signal
to grant PCI to the expansion bridge. The PHLDA# protocol has been
modified to include support for passive release.
PAR I/O
PCI V_3 Parity: A single parity bit is provided over AD[31:0] and C/BE[3:0]#.
Pentium
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10 Datasheet 245304-002
SERR# I/O
PCI V_3
System Error: The 82443BX asserts this signal to indicate an error
condition. For further information, refer to the
Intel
440BX AGPSet:
82443BX Host Bridge/Controller Datasheet (Order Number: 290633-
001)
.
CLKRUN# I/O D
PCI V_3
Clock Run: An open-drain output and input. The 82443BX Host
Bridge requests the central resource, PIIX4E/M, to start or maintain
the PCI clock by asserting CLKRUN#. The 82443BX Host Bridge tri-
states CLKRUN# upon deassertion of Reset (since CLK is running
upon deassertion of Reset).
PCI_RST# I
CMOS V_3 Reset: When asserted, this signal asynchronously resets the
82443BX Host Bridge. The PCI signals also tri-state, compliant with
PCI Revision 2.1 Specifications
.
Table 4. PCI Signal Descriptions
Name Type Voltage Description
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245304-002 Datasheet 11
3.1.5 Processor and PIIX4E/M Sideband Signals
Table 5 provides descriptions of the processor and PIIX4E/M sideband signals.
NOTE: See Table 8 for V_CPUPU definition.
Table 5. Processor and PIIX4E/M Sideband Signal Descriptions
Name Type Voltage Description
FERR# O D
CMOS V_CPUPU
Numeric Co-processor Error: This signal functions as an FERR#
signal supporting co-processor errors. This signal is tied to the co-
processor error signal on the processor and is pulled active low by the
processor to the PIIX4E/M.
IGNNE# I D
CMOS V_CPUPU Ignore Error: This open-drain signal is connected to the Ignore Error
pin on the processor and is driven by the PIIX4E/M.
INT# I D
CMOS V_CPUPU Initialization: INIT# is asserted by the PIIX4E/M to the processor for
system initialization. This signal is an open-drain.
INTR I D
CMOS V_CPUPU P rocessor Interrupt: The PIIX4E/M drives INTR to signal the
processor that an interrupt request is pending and needs to be serviced.
This signal is an open-drain.
NMI I D
CMOS V_CPUPU
Non-maskable Interrupt: NMI is used to force a non-maskable
interrupt to the processor. The PIIX4E/M ISA bridge generates an NMI
when either SERR# or IOCHK# is asserted, depending on how the NMI
Status and Control Register is programmed. This signal is an open-
drain.
A20M# I D
CMOS V_CPUPU Address Bit 20 Mask: When enabled, this open-drain signal causes
the processor to emulate the address wraparound at 1 MB, which
occurs on the Intel 8086 processor.
SMI# I D
CMOS V_CPUPU
System Management Interrupt: SMI# is an active-low synchronous
output from the PIIX4E/M that is asserted in response to one of many
enabled hardware or software events. The SMI# open-drain signal can
be an asynchronous input to the processor. However, in this chipset
SMI# is synchronous to PCLK.
STPCLK# I D
CMOS V_CPUPU
Stop Clock: STPCLK# is an active-low , synchronous open-drain output
from the PIIX4E/M that is asserted in response to one of many
hardware or software events. STPCLK# connects directly to the
processor and is synchronous to PCICLK. When the processor samples
STPCLK# asserted, it responds by entering a low-power state (Quick
Start). The processor will only exit this mode when this signal is
deasserted.
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3.1.6 Power Management Signals
Table 6 provides descriptions of the power management signals. The SM_CLK and SM_DATA
signals refer to the two-wire serial SMBus interface. Although this interface is currently used
solely for the digital thermal sensor, the SMBus contains reserved serial addresses for future use.
NOTE: V_3ALWAYS is a 3.3-V supply. It is generated whenever V_DC is available and supplied to PIIX4E/M
resume well.
Table 6. Power Management Signal Descriptions
Name Type Voltage Description
SUS_STAT1# I
CMOS V_3ALWAYS Suspend Status: This signal connects to the SUS_STAT1#
output of PIIX4E/M. It provides information on host clock status
and is asserted during all suspend states.
VR_ON I
CMOS V_3
VR_ON: V olt age regulator ON. This 3.3-V (5.0-V tolerant) signal
controls the operation of the voltage regulator. VR_ON should
be generated as a function of the PIIX4E/M SUSB# signal,
which is used for controlling the “Suspend State B” voltage
planes. This signal should be driven by a digital signal with a
rise/fall time of less than or equal to 1 µS. (VIL (max) = 0.4V, VIH
(min) = 3.0V.)
VR_PWRGD O V_3
VR_PWRGD: The mobile module drives this signal high to
indicate that the voltage regulator is stable. The signal is pulled
low using a 100-K resistor when inactive, and it can be used in
some combination to generate the system PWRGOOD signal.
BXPWROK I
CMOS V_3 Power OK to BX: This signal must go active at least 1 mS after
the V_3 power rail is stable and 1 mS prior to deassertion of
PCIRST#.
SM_CLK I/O D
CMOS V_3 Serial Clock: T his clock signal is used on the SMBus interface
to the digital thermal sensor.
SM_DATA I/O D
CMOS V_3 Serial Data: Open-drain data signal on the SMBus interface to
the digital thermal sensor.
ATF_INT# O D
CMOS V_3 ATF Interrupt: This signal is an open-drain output signal of the
digital thermal sensor.
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3.1.7 Clock Signals
Table 7 provides descriptions of the clock signals.
Table 7. Clock Signal Descriptions
Name Type Voltage Description
PCLK I
PCI V_3
PCI Clock In: PCLK, an input to the mobile module, is one of the
system’s PCI clocks. All of the 82443BX Host Bridge logic uses this
clock in the PCI clock domain. This clock is stopped when the PIIX4E/
M PCI_STP# signal is asserted and/or during all suspend states.
HCLK0 I
CMOS V_CLK
Host Clock In: This clock is an input to the mobile module from the
CK100-M/CK100-SM clock source. The processor and the 82443BX
Host Bridge system controller use HCLK0. This clock is stopped when
the PIIX4E/M CPU_STP# signal is asserted and/or during all suspend
states.
Note: HCLK0 and BCLK are used interchangeably.
HCLK1 I
CMOS V_CLK Host Clock In: This clock is an input to the mobile module from the
CK100-M/CK100-SM clock source.
This signal is not implemented on the mobile module.
DCLK0 O
CMOS V_3
SDRAM Clock Out: A 66-MHz SDRAM clock reference generated
internally by the 82443BX Host Bridge system controller onboard PLL.
It feeds an external buffer that produces multiple copies for the SO-
DIMMs.
DCLKRD I
CMOS V_3
SDRAM Read Clock: Feedback reference from the SDR AM clock
buff er. The 82443BX Host Bridge System Controller uses this clock
when reading data from the SDRAM array.
This signal is not implemented on the mobile module.
DCLKWR I
CMOS V_3 SDRAM Write Clock: Feedback reference from the SDRAM clock
buff er. The 82443BX Host Bridge system controller uses this clock
when writing data to the SDRAM array.
GCLKIN I
CMOS V_3 AGP Clock In: The GCLKIN input is a feedback reference from the
GCLKO signal.
GCLKO O
CMOS V_3
AGP Clock Out: This signal is generated by the 82443BX Host
Bridge system controller onboard PLL from the HCLK0 host clock
reference. The frequency of GCLKO is 66 MHz. The GCLKO output is
used to feed both the PLL reference input pins on the 82443BX Host
Bridge system controller and the AGP device. The board layout must
maintain complete symmetry on loading and trace geometry to
minimize AGP clock skew.
FQS O
CMOS V_3S Frequency Select: This output indicates the desired host clock
frequency for the mobile module.
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3.1.8 Voltage Signals
Table 8 provides descriptions of the voltage signals.
Table 8. Voltage De scriptions
Name Type Number
of pins Description
V_DC I 20 DC Input: 7.5V ~ 21.0V
V_3S I 9 SUSB# Controlled 3.3V: Power managed 3.3-V supply. An output
of the voltage regulator on the system electronics. This rail is off
during STR, STD, and Soff.
V_5 I 3 SUSC# Controlled 5.0V: Power managed 5.0-V supply. An output
of the voltage regulator on the system electronics. This rail is off
during STD and Soff.
V_3 I 16 SUSC# Controlled 3.3V: Power managed 3.3-V supply. An output
of the voltage regulator on the system electronics. This rail is off
during STD and Soff.
VCCAGP I 4
AGP I/O Voltage: This voltage rail is not implemented on the
mobile module and is defined for upgrade purposes only. Intel
recommends that this voltage rail be connected to V_3 on the
system electronics.
V_CPUPU O 1
Processor I/O Ring: The mobile module drives V_CPUPU to
power processor interface signals, such as the PIIX4E/M open-
drain pullups for the processor and PIIX4E/M sideband signals.
V_CPUPU is tied to 1.5V.
V_CLK O 1 Processor Clock Rail: The mobile module drives V_CLK to power
CK100-M VDDCPU rail.
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3.1.9 ITP and JTAG Pins
Table 9 provides descriptions of the ITP and JTAG signals, which the system manu facturer can use
to implement a JTAG chain and an ITP port if desired.
NOTE: FS_RESET# and FS_PRDY# are pulled up to VTT inside the mobile Pentium III processor core.
3.1.10 Miscellaneous Pins
Table 10 provides descriptions of the miscellaneous signal pins.
Table 9. ITP and JTAG Pins
Name Type Voltage Description
TDO O V_CPUPU JTAG Test Data Out: A serial output port. TAP instructions and data
are shifted out of the processor from this port.
TDI I VTT JTAG Test Data In: A serial input port. TAP instructions and data are
shifted into the processor from this port.
TMS I VTT JTAG Test Mode Select: Controls the TAP controller change
sequence.
TCLK I VTT JTAG Test Clock: Testability clock for clocking the JTAG boundary
scan sequence.
TRST# I VTT JTAG Test Reset: Asynchronously resets the TAP controller in the
processor.
FS_PREQ# I VTT Debug Mode Request: Driven by the ITP – makes request to enter
debug mode.
FS_PRDY# O VTT Debug Mode Ready: Driven by the processor – informs the ITP that
the processor is in debug mode.
FS_RESET# O VTT Processor Reset: Processor reset status to the ITP.
VTT O VTT GTL+ Termination Voltage: The POWERON pin uses VTT on the
ITP debug port to determine when target system is on. The
POWERON pin is pulled up using a 1-KΩ resistor to VTT. Other I T P
signals might use this power rail for pullup.
Table 10. Miscellaneous Pin Descriptions
Name Type Number Description
Module ID[3:0] O
CMOS 4Module Revision ID: These pins track the revision level of the mobile
module. A 100-K pullup resistor to V_3S must be placed on the system
electronics for these signals. See Section 8.0 for more detail.
Ground I 45 Ground
Reserved RSVD 33 Unallocated Reserved pins.
All Reserved pins must not be connected.
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3.2 Connector Pin Assignments
Table 11 lists the signals for each pin of the connector to the system electronics. Refer to Section
3.3 for the pin assignments.
Table 11. Connector Pin Assignment
Pin
Number Row A Row B Row C Row D Row E
1 SBA5 ADSTBB GND GAD31 SBA7
2 GAD25 GAD24 SBA6 SBA4 SBA0
3 GAD30 GAD29 GAD26 GAD27 GND
4 GND VCCAGP GAD4 GAD6 GDA8
5 RBF# GAD1 GAD3 GAD5 GC/BE0#
6 BXPWROK RESERVED GAD2 ADSTBA GND
7 MD0 MD1 V_3 CLKRUN# GAD7
8 MD2 MD33 GND MD32 MD34
9 MD36 MD4 MD3 MD35 MD34
10 MD7 MD38 MD37 MD6 MD5
11 MD41 MD42 MD40 MD39 MD8
12 MD43 MD11 GND MD10 MD9
13 MD14 MD45 MD44 MD13 MD12
14 MECC4 MECC0 ND15 ND47 ND46
15 SCASA# MWEA# MECC5 RESERVED GND
16 GND MID1 DQMA0 DQMA1 RESERVED
17 V_3 DQMA4 MID0 DQMA5 CSA#
18 CSA1# CSA2# CSA4# CSA3# GND
19 SRASA# CSA5# MAB0# MAB1# RESERVED
20 RESERVED RESERVED MAB2# RESERVED MAB3#
21 RESERVED MAB4# GND RESERVED MAB6#
22 RESERVED RESERVED MAB5# RESERVED MAB7#
23 MAB8# RESERVED RESERVED MSB9# MAB10
24 RESERVED MAB11# MAB12# RESERVED DCLK0
25 MAB13 V_3 GND CKE0 DCLKRD
26 CKE1 MID2 CKE3 CE4 GND
27 CKE5 CKE2 MID3 RESERVED RESERVED#
28 RESERVED RESERVED DQMA2 DCLKWR GND
29 GND VTT RESERVED FS_PREQ# DQMA3
30 FS_RESET# V_3 MD26 GND MD25
31 FS_PRDY# GND MD58 MD57 MD60
32 RESERVED SMCLK TDO TCLK FERR#
33 RESERVED SMDAT TDI TMS IGNNE#
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34 RESERVED FQS RESERVED TRST# ATF_INT#
35 RESERVED V_5 V_3S V_3S V_3S
36 V_CPUPU V_5 V_3S V_3S V_3S
37 V_CLK V_5 V_3S V_3S V_3S
38 RESERVED RESERVED RESERVED RESERVED RESERVED
39 V_DC V_DC V_DC V_DC V_DC
40 V_DC V_DC V_DC V_DC V_DC
Table 11. Connector Pin Assignment
Pin
Number Row A Row B Row C Row D Row E
Pin
Number Row F Row G Row H Row J Row K
1 GREQ# GND PIP# SBA3 GND
2 ST0 ST1 SBA1 SBSTB GCLKI
3 GGNT# ST2 SBA2 GND CGLK0
4 GAD13 GSTOP# GAD16 GAD20 GAD23
5 GAD12 GPAR GAD18 GAD17 GC/BE3#
6 GAD10 GAD15 GFRAME# GND GAD22
7 GAD11 GC/BE1# GTRDY# GC/BE2# GAD21
8 GAD9 GAD14 GDEVESEL# GIRDY# GAD19
9 GND VCCAGP GND VCCAGP GAD28
10 AD0 AD4 AD2 AD3 AD1
11 GND C/BE0# AD6 GND AD5
12 VCCAGP AD10 AD7 AD8 AD9
13 MECC1 AD13 GND AD12 AD11
14 SERR# PAR AD15 C/BE1# AD14
15 AD16 TRDY# STOP# DEVSEL# PLOCK#
16 AD19 GND AD17 GND AD18
17 AD23 AD30 AD24 C/BE2# AD21
18 AD27 AD22 C/BE3# AD26 PCLK
19 PCI_RST# GND AD20 AD28 GND
20 RESERVED PHOLD# AD31 AD29 AD25
21 IRDY# FRAME# GND REQ1# REQ0#
22 GND GNT2# REQ2# REQ3# GNT3#
23 GNT1# GNT4# GNT0# REQ4# GND
24 GND PHLDA# GND V_3 MD59
25 DQMA6 MECC7 MD50 MD51 MD54
26 MECC2 MD48 MD18 MD52 MD24
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3.3 Pin and Pad Assignments
The 400-pin MMC-2 connector has a 1.27-mm pitch and a BGA style surface mount. Refer to
Sec tion 6.1.3 for size information. Figure 2 shows the MMC-2 connector pad assignments.
27 DQMA7 MD16 MD19 GND MD23
28 MECC6 MD17 MD21 MD53 MD55
29 MECC3 MD49 MD20 MD22 MD56
30 MD27 MD28 GND MD62 MD63
31 GND MD29 MD61 MD30 MD31
32 DMI# INTR VR_ON GND GND
33 NMI SUS_STAT1# VR_PWRGD GND HCLK0
34 A20M# STPCLK# INIT# GND GND
35 V_3 V_3 V_3 GND HCLK1
36 V_3 V_3 V_3 GND GND
37 V_3 V_3 V_3 V_3 V_3
38 RESERVED RESERVED RESERVED RESERVED RESERVED
39 V_DC V_DC V_DC V_DC V_DC
40 V_DC V_DC V_DC V_DC V_DC
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Figure 2. MMC-2 Connector Pad Footprint
Table 12 summarizes some of the connector key specifications.
400-Pin Connector Footprint
OEM Pad A s signme nts
40 1
K
A
Table 12. Connector Specifications
Parameter Condition Specification
Material Contact Copper Alloy
Housing Thermo-Plastic Molded Compound: LCP
Electrical
Current 0.5A
Voltage 50 VAC
Insulation Resistance 100 MΩ
Termination Resistance 20-mΩ maximum at 20-mV open circuit with 10 mA
Capacitance 5-pF maximum per contact
Mechanical
Mating Cycles 50 Cycles
Connector Mating Force 50 lbs (22.7 kg) maximum
Contact Unmating Force 30 lbs (13.6 kg) maximum
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4.0 Functional Description
4.1 Pentium III Processor Mobile Module MMC-2
The mobile Pentium III processor core runs at speeds of 450 MHz and 500 MHz with a 100-MHz
PSB.
4.2 L2 Cache
The on-die L2 cache has 256 KB, is eight-way set associative, and runs at the speed of the
processor core.
4.3 The 82443BX Host Bridge System Controller
Intel’s 82443BX Host Bridge system controller is a highly integrated device that combines the bus
controller, the DRAM controller, and the PCI bus controller into one component. The 82443BX
Host Bridge has multiple power management features designed specifically for notebook systems
such as:
•CLKRUN#, a feature that enables controlling of the PCI clock on or off.
•The 82443B X Hos t B ridge susp end modes, whi ch includ e S us pend -To-RAM (STR), Su sp end-
To-Disk (STD), and Power-On-Suspend (POS).
•System Managemen t RAM (SMRAM) power management mo des, whi ch i nclud e C ompatible
SMRAM (C_SMRAM) and Extended SMRAM (E_SMRAM). C_SMRAM is the traditional
SMRAM feature implemented in all Intel PCI chipsets. E_SMRAM is a new feature that
supports write-back cacheable SMRAM space up to 1 MB. To minimize power consumption
while the system is idle, the internal 82443BX Host Bridge clock is turned off (gated off) when
there is no processor and PCI activity. This is accomplished by setting the G_CLK enable bit
in the power management register in the 82443BX through the system BIOS.
4.3.1 Memory Organization
The memory interface of the 82443BX Host Bridge is available at connector. This allows for the
following:
•One set of memor y control sign als, suf fi cien t to s upport u p to three SO-DI MM so ckets and six
banks of SDRAM at 100 MHz.
•One CKE signal for each bank.
Memory features not supported by the 82443BX Host Bridge system controller standard MMC-2
mode are:
•Eight banks of memory
•256-Mb memory devices
•Second set of memory address lines (MAA[13:0])
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•Extended Data Out (EDO) DRAM
•66-MHz memory bus
The clocking architecture supports the use of SDRAM. The clocking mode for 100-MHz SDRAM
memory confi guratio ns allows all host and SDRAM clocks to be generated from the same clocki ng
source on th e system el ectronics . For comp lete det ails about memory dev ice supp ort, or g anizati on,
size, and addressing when using SDRAM memory and trace length guidelines, refer to the Intel®
Pentium®
III
Processor Mobile Module System Electronics 100-MHz Layout Guidelines Revision.
1.0 (OR-1780).
4.3.2 Reset Strap Options
Several strap options on the memory address bus define the behavior of the Pentium III processor
mobile module after reset. Other straps are allowed to override the default settings. Table 13 shows
the various straps and their implementation.
4.3.3 PCI Interface
The PCI interface of the 82443BX Host Bridge is available at the MMC-2 connector. The
82443BX Hos t B ridge suppo rt s t he PCI Cloc kru n p rot oco l for P CI bus p ower m a nagem ent . I n t his
protocol, PCI devices assert the CLKRUN# open-drain signal when they require the use of the PCI
interface. Refer to the PCI Mobile Design Guide for complete details on the PCI Clockrun
protocol.
The 82443BX Host Bridge is responsible for arbitrating the PCI bus. The 82443BX Host Bridge
can support up to five PCI bus masters. There are five PCI Request/Grant pairs (REQ[4:0]# and
GNT[4:0]#) available on the connector to the system electronics.
Note: The PCI interface on the MMC-2 connector is 3.3V only. PCI devices that are 5.0V are not
supported.
The 82443BX Host Bridge system co ntroller is compliant with the PCI 2.1 Specification, w hich
improves the worst case PCI bus access latency from earlier PCI specifications. The 82443BX
Host Bridge supports only Mechanism #1 for accessing PCI configuration space. This implies that
signals AD[31:11] are available for PCI IDSEL signals. However, since the 82443BX Host Bridge
Table 13. Configuration Straps for the 82443BX Host Bridge System Controller
Signal Function Module Default Setting Optional Override on
System Electronics
MAB[12]# Host Frequency Select Strapped high on the module for 100
MHz None
MAB[11]# In Order Queue Depth No strap, maximum queue depth is set
at 8 None
MAB[10]# Quick Start Select S trapped high on the module for Quick
Start mode None
MAB[9]# AGP Disable No strap (AGP is enabled) Strap high to disable AGP
MAB[7]# MM Configuration No strap (standard MMC-2 mode) None
MAB[6]# Host Bus Buffer Mode
Select Strapped high on the module for
mobile PSB buffers None
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is always device #0, AD11 will never be asserted during PCI configuration cycles as an IDSEL.
The 82443BX reserves AD12 for the AGPbus. Thus, AD13 is the first available addr ess line usable
as an IDSEL. Intel recommends that AD18 be used by the PIIX4E/M.
4.3.4 AGP Inte rfac e
The 82443B X Host Bridge system controller is compliant with the AGP Interface Specifica tion
Revision 2.0, which supports an asynchronous AGP interface coupling to the 82443BX core
frequency. The AGP interface can achieve real data throughput in excess of 500 MB per second
using an AGP 2X graphics device. Actual bandwidth may vary depending on specific hardware
and software implementations.
4.4 Power Management
4.4.1 Clock Control Architecture
The clock control architecture has been optimized for notebook designs. The clock control
architecture consists of seven different clock states: Normal, Stop Grant, Auto Halt, Quick Start,
HALT/Grant Snoop , Sleep, and Deep Sleep states. The Au to Halt state provides a low-power clock
state that can be controlled thr oug h the sof tware execution of the HLT instruction. The Quick S t art
state provides a very low-power, low-exit latency clock state that can be used for hardware
controlled "idle" states. The Deep Sleep state provides an extremely low-power state that can be
used for Power-On-Suspend states, which is an alternative to shutting off the processor’s power.
The exit latency of the Deep Sleep state is 30 µS in the mobile module. The Stop Grant state and
the Quick S tart clock state are mu tually ex clusive. For ex ample, a strap ping option on sign al A15#
chooses which state is entered when the STPCLK# signal is asserted. Strapping the A15# signal to
ground at Reset enables the Quick Start state. Otherwise, asserting the STPCLK# signal puts the
processor into the Stop Grant state.
Table 14 provides information on the clock control states and Figure 3 illustrates the clock control
architecture. Performing state transitions not shown in F igure 3 are neither recommended nor
supported.
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Table 14. Clock St ate Characteristics
NOTES:
1. Intel mobile modules do not support the Sleep and Stop Grant clock states.
2. These values are not 100% tested and are specified at 50°C by design and characterization.
3. This value is not 100% tested and is specified at 35°C by design and characterization.
4. Specification labeled N/A are not available.
Clock State Exit Latency Snooping System Uses Notes
Normal N/A Yes Normal program execution Note 4
Auto Halt Approximately 10 bus clocks Yes Software controlled entry idle
mode Note 2
Stop Grant 10 bus clocks Yes Har dware controlled entry/exit
mobile throttling Note 1
Quick Start
Through Snoop, to HALT/Grant
Snoop state: immediate
Through STPCLK#, to Normal state:
10 bus clocks
Yes Har dware controlled entry/exit
mobile throttling Note 2
HALT/Grant
Snoop A few bus clocks after the end of
snoop activity Yes Supports snooping in the low-
power states
Sleep To Stop Grant state 10 bus clocks No Hardware controlled entry/exit
desktop idle mode support Note 1
Deep Sleep 30 µSNo
Hardware controlled entry/exit
mobile POS support Note 3
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Figure 3. Clock Control States
4.4.1.1 Normal S tate
The Normal states is the normal operating mode where the processor’s core clock is running, and
the processor is actively executing instructions.
4.4.1.2 A uto Halt State
This is a low-power mo de entered by the process or throu gh the execution of the HLT instruction.
The power level of th is m ode is similar to the Stop Grant state. A transition to the Normal state is
made by a halt break event (one of th e following signals going active: NMI, INTR , BINIT#, INIT#,
RESET#, FLUSH#, or SMI#).
HALT/Grant
Snoop
Normal
State
HS=false
Stop
Grant
Auto
Halt
HS=true
Quick
Start
Sleep
Deep
Sleep
(!STPCLK#
and !HS) or
stop break
STP CLK # an d
!QSE an d SGA
Snoop
occurs
Snoop
serviced
STP CLK # an d
QSE and SGA
(!STPCLK# and !HS)
or RESET#
Snoop
serviced Snoop
occurs
!STPCLK#
and HS
STPCLK# and
!QSE and SGA
HLT and
halt bus cycle
halt
break
Snoop
serviced
Snoop
occurs
STPCLK# and
QS E an d SGA
!STPCLK#
and HS
!SLP # or
RESET#
SLP# BCLK
stopped
BCLK on
and !QSE
BCLK
stopped
BCLK on
and QSE
NOTES: Halt break – A20M#, BINIT#, FLUSH#, INIT#, INTR, NMI, PREQ#, RESET#, SMI#
HLT – HLT instruction executed
HS – Processor Halt State
QS E – Qu ick S ta rt St ate En abled
SG A – S t op Gra nt Acknowledg e bus cy c le is sued
Stop break – BINIT#, FLUSH#, RESET#
Intel mobile modules do not support shaded clock control states
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Asserting the STPCLK# signal while in the Auto Halt state will cause the processor to transition to
the Stop Grant state or the Quick Start state, where a Stop Grant Acknowledge bus cycle will be
issued. Deasserting STPCLK# will cause the processor to return to the Auto Ha lt state without
issuing a new Halt bus cycle.
The SMI# (System Managem ent Interrupt) is recognized in the Auto Halt state. The return from th e
SMI handler can be to either the Normal state or the Auto Halt state. See the Intel® Architecture
Software Developer's Manual, Volume III: System Programmer's Guide for more information. No
Halt bus cycle is issued when returning to the Auto Halt state from System Management Mode
(SMM).
The FLUSH# signa l is serviced in the Auto Halt s tate. After flushing the on-chip, the pr ocessor
will return to the Auto Halt state without issuing a Halt bus cycle. Transitions in the A20M# and
PREQ# signals are recognized while in the Auto Halt state.
4.4.1.3 Stop Grant Sta te
Intel mobile modules d o not s upport the Stop Grant state.
In desktop systems, the processor enters this mode with the assertion of the STPCLK# signal when
it is configured for Stop Grant state (via the A15# strapping option). The processor is still able to
respond to snoo p requests and latch interrupts. Latched interrupts will be serviced when the
processor returns to the Normal state. Only one occurrence of each interrupt event will be latched.
A transition back to the No rmal state can be made by the deassertion of the STPCLK# signal, or the
occurrence of a stop break event (a BINIT#, FLUSH#, or RESET# assertion).
The processor will return to the Stop Grant state after the completion of a BINIT# bus initialization
unless STPCLK# has been deasserted. RESET# assertion will cause the processor to immediately
initialize itself. How e ver, the processor will stay in the Stop Grant state after initialization until
STPCLK# is deasserted. If th e FLUSH# signal is ass e rt ed, the processor will flush th e on-chip
caches and return to the Stop Grant state. A transition to the Sleep state can be made by the
assertion of the SLP# signal.
While in the Stop Grant state, assertions of SMI#, INIT#, INTR, and NMI (or LINT[1:0]) will be
latched by the processor . These latched events will not be serviced until the processor returns to the
Normal state. Only one of each event will be recognized upon return to the Normal state.
4.4.1.4 Quick Start State
This is a mode entered b y the processor with the assertio n of the STPCLK# signal w hen it is
configured for the Quick Start state (via the A15# strapping option). In the Quick Start state the
processor is only capable of acting on snoop transactions generated by the PSB priority device.
Because of its snooping behavior, Quick Start can only be used in single processor configurations.
A transition to the Deep Sleep state can be made by stopping the clock input to the processor. A
transition back to the Normal state (from the Quick St art state) is made only if the STPCLK# signal
is deasserted.
While in this s tate the processor is limited in its ability to respond to input. It is incapable of
latching any inte rrupts, s ervici ng snoop t ransacti ons fro m symmetric bus masters, or res pondi ng to
FLUSH# and BINIT# assertions. In the Quick Start state, the processor will not respond properly to
any input signal other than STPCLK#, RESET#, or BPRI#. If any other input signal changes, then
the behavio r of the processor will be u npredict able. No ser ial inte rrupt mess ages may begin or be in
progress while th e processor is in the Quick Start state.
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26 Datasheet 245304-002
RESET# assertion will cause the processor to immediately initialize itself, but the processor will
stay in the Quic k Start state after initialization until STPCLK# is deasserted.
4.4.1.5 H ALT/Grant Snoop State
The processor will respond to snoop transactions on the PSB while in the Auto Halt, Stop Grant, or
Quick Start state. When a snoop transaction is presented on the system bus, the processor will enter
the HALT/Grant Snoop state. The processo r will remain in this state until the snoop has b een
serviced and the PSB is quiet. After the snoo p ha s been serviced, the process or will return to its
previous state. If the HALT/Grant Snoop state is entered from the Quick Start state, then the input
signal restriction s o f the Quick Start state still apply in the HALT/Grant Snoop state (except for
those signal transitions that are required to perform the snoop).
4.4.1.6 Sleep State
Intel mobile modu les do not support the Sleep state.
In desktop systems, the Sleep state is a very low-power state in which the processor maintains its
context and the phase locked loop (PLL) maintains phase lock. The Sleep state can only be entered
from the Stop Grant state. After entering the Stop Grant state the SLP# signal can be asserted,
causing the processor to enter the Sleep state. The SLP# signal is not recognized in the Normal
state or the Auto Halt state.
The processor can be reset by the RESET# signal while in the Sleep state. If RESET# is driven
active while the processor is in the Sleep state, then SLP# and STPCLK# must immediately be
driven inactiv e to ensure that the process or correctly initializes itself.
Input signals (other than RESET#) may not change while the processor is in or transitioning into or
out of the Sleep state. Input signal changes at these times will cause unpredictab le b ehavior. Thus,
the processor is incapable of snooping or latching any events in the Sleep state.
While in the Sleep state the processor can enter its lowest power state, the Deep Sleep state.
Removing the processor’s input clock puts the processor in the Deep Sleep state. PICCLK may be
removed in the Sleep state.
4.4.1.7 D eep Sleep State
The Deep Sleep state is the lowest p ower mode the processor can enter while maintaining its
context. Stopping the BCLK input to the processor enters the Deep Sleep state, while it is in the
Sleep stat e or th e Qui ck Start s tat e. Fo r proper oper a tio n, t h e BCL K in put s hou l d be s top ped i n the
low state.
The processor will return to the Sleep state or the Quick Start state from the Deep Sleep state when
the BCLK input is restarted. Due to the PLL lock latency, there is a 30-µS delay after the clocks
have started before this state transition happens. PICCLK may be removed in the Deep Sleep state.
PICCLK should be designed to turn on when BCLK turns on when transitioning out of the Deep
Sleep state.
The input signal restrictions for the Deep Sleep state are the same as for the Sleep state, except that
RESET# assertion will result in unpredictable behavior.
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245304-002 Datasheet 27
4.5 Power Consumption in Power Management Mode
Table 15 provides the module power consumption values in various power management modes.
The power data is broken down into each power rail. Each power rail is supplied to the module
through the MMC-2 connector. The total power values are based on typical power consumption.
The data is captured at Tamb = 25°C, T TTP = 25 °C, and V_DC = 18.0V.
Note: The values below are not 100% tested and have been characterized by design.
Table 15. Power Consumption Values
NOTE: These power values should be used as power supply guidelines for power management modes. They
have some guardband added for design margin. Therefore, the total power does not necessarily add up
as the sum of each power rail. "Total Power" is the sum of " the individual "raw" power requirements with
guardband added.
State V_DC V_5 V_3 V_3S Total Power
Auto Halt 2.19W 0.08W 2.27W 0.57W 4.17W
Quick Start 1.77W 0.08W 2.04W 0.62W 3.43W
Deep Sleep 1.29W 0.08W 0.24W 0.45W 1.35W
STR 0.04W 0.01W 0.01W 0.00W 0.05W
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28 Datasheet 245304-002
5.0 Electrical Specifications
The following section provides the electrical specifications for the Pentium III processor mobile
module.
5.1 System Bus Clock Signal Quality Specifications
The HCLK0 and BCLK signal names are used interchangeably.
5.1.1 BCLK DC Specifica tions
NOTE: VILX,min and VIH,max only apply when BCLK is stopped. BCLK should be stopped in the low state. See
Table 17 for the BCLK voltage range specifications when BCLK is running.
5.1.2 BCLK AC Specifica tions
NOTES:
1. All AC timings for GTL+ and CMOS signals are referenced to the BCLK rising edge at 1.25V. All CMOS
signals are referenced at 0.75V.
2. The internal core clock frequency is derived from the PSB clock. The PSB clock to core clock ratio is
determined during initialization and is predetermined by the Intel mobile module. The BCLK period allows a
+0.5 nS tolerance for clock driver variation.
3. This value is measured on the rising edge of adjacent BCLKs at 1.25V. The jitter present must be accounted
for as a component of BCLK skew between devices.
4. The clock driver’ s closed loop jitter bandwidth must be set low to allow any PLL-based device to track the
jitter created by the clock driver. The -20.0 dB attenuation point, as measured into a 10.0-pF to a 2. 0-pF load,
should be less than 500 kHz. This specification may be ensured by design characterization and/or measured
with a spectrum analyzer. See the
CK97 Clock Synthesizer/Driver Specification (OR-1089)
for further details.
5. These values are not 100% tested and are specified by design characterization as a clock driver
requirement.
6. Specifications labeled N/A are not available.
Table 16. BCLK DC Specifications
Symbol Parameter Min Max Unit
VIL,BCLK Input Low Voltage, BCLK - 0.3 0.5 V
VIH,BCLK Input High Voltage, BCLK 2.0 2.625 V
Table 17. BCLK AC Specifications at the Processor Core Pins
T# Parameter Min Nom Max Unit Note
System Bus Frequency N/A 100.0 N/A MHz Notes 5, 6
BCLK Period N/A 10.0 N/A nS Notes 2, 5, 6
BCLK Period Stability N/A N/A ± 250 pS Notes 3, 4, 5, 6
T3: BCLK High Time 2.85 N/A N/A nS At > 1.7V, Notes 5, 6
T4: BCLK Low Time 2.55 N/A N/A nS At > 0.7V, Notes 5, 6
T5: BCLK Rise Time 0.175 N/A 0.875 nS 0.9V ~ 1.6V, Notes 5, 6
T6: BCLK Fall Time 0.175 N/A 0.875 nS 1.6V ~ 0.9V, Notes 5, 6
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245304-002 Datasheet 29
Table 18 describes the signal quality specifications at the processor core for the PSB clock (BCLK)
sign al. Figure 4 describes the signal quality waveforms for the PSB clock at the processor core p ins
For proper signal termination, refer to the “Clocking Guidelines” section in the Mobile Pentium
III
Pr ocessor /440BX AGPset Recommen ded Design and Debu g Practices (RDDP-A) 10 0 MHz Rev.
2.0 (SC-2760).
NOTES:
1. On the rising edge of BCLK, there must be a minimum overshoot to 2.0V. The clock must rise monotonically
between VIL,BCLK and 2.0V and fall monotonically between VIH,BCLK and VIL,BCLK.
2. These specifications apply only when BCLK is running. See Table 16 for the DC specifications when BCLK is
stopped. BCLK may not be above VIH,BCLK,MAX or below VIL,BCLK,MIN for more than 50% of the clock cycle.
3. The rising and falling edge ringback voltage specified is the minimum (rising) or maximum (falling) absolute
voltage the BCLK signal can dip back to after passing the VIH,BCLK (rising) or VIL,BCLK (falling) voltage limits.
4. Specifications labeled N/A are not available.
Figure 4. BCLK Waveform at the Processor Core Pins
Table 18. BCLK Signal Quality AC Specifications at the Processor Core
T# Parameter Min Max Unit Notes
V1 VIL,BCLK -0.3 0.7 V Notes 1, 4
V2 VIH,BCLK 1.7 2.625 V Notes 1, 4
V3 VIN Absolute Voltage Range -0.7 3.5 V Undershoot, Overshoot, Note 2
V4 Rising Edge Ringback 1.7 N/A V Absolute Value, Notes 3, 4
V5 Falling Edge Ringback N/A 0.7 V Absolute Value, Notes 3, 4
BCLK Rising/Falling Slew Rate 0.8 4.0 V/nS
V1
V3
V2 V4
V3
V5
V0012-00
T3
T6 T4 T5
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30 Datasheet 245304-002
5.2 System Power Requirements
Table 19 provides the DC power supply design criteria.
NOTES:
1. V_DC is set for 12.0V in order to determine typical V_DC current.
2. V_DC is set for 7.5V in order to determine maximum V_DC current.
3. A 20-µS duration.
4. This is V_DC dependent. See Figure 7 for data of IDC-RMS vs. V_DC.
5. These values are system dependent.
6. Specifications labeled N/A are not applicable.
5.3 Processor Core Voltage Regulatio n
The DC voltage regulator (DC/DC converter) supports the core voltage and I/O ring voltage. The
DC voltage regulator provides the appropriate processor core voltage, the GTL+ bus termination
voltage, th e process or s ideban d si g nal pul lup vol tage, and the clock driver buffer vol tage. Of t hese
voltages, only the processor sideband pullup voltage (V_CPUPU) and the clock driver buffer
voltage (V_CLK) are delivered to the system electronics.
The DC voltage range is 7.5V ~ 21.0V from the system battery or power supply for mobile
applications.
5.3.1 Voltage Regulator Efficiency
There are three voltage regulators on the mobile module. These voltage regulators generate the
core voltage used by the CPU and the voltage for the CPU I/O ring voltage. The core voltage
regulator provides the required current from the V_DC supply and its relative efficiencies are
shown in Table 20 and Figure 5. The V_CLK and Vtt voltage regulators tap the V_3 plane.
Table 19. System Power Requirements
Symbol Parameter Min Nom Max Unit Notes
VDC DC Input Voltage 7.5 12.0 21.0 V
IDC DC Input Current 0.1 2.6 5.0 A Notes 1, 2
IDC_RMS RMS Ripple Current N/A N/A 7.5 A Notes 4, 6
IDC_Surge Maximum Surge Current for VDC N/A N/A 20.0 A Notes 3, 6
V5Power Managed 5.0-V Supply 4.75 5.0 5.25 V
I5Power Managed 5.0-V Current, Operating 20.0 50.0 100.0 mA
I5_Surge Maximum Surge Current for V5N/A N/A 1.5 A Notes 3, 6
V3Power Managed 3.3-V Supply 3.135 3.3 3.465 V
I3Power Managed 3.3-V Current 0.8 1.2 3.0 A
I3_Surge Maximum Surge Current for V3N/A N/A 4.0 A Notes 3, 6
VCPUPU Processor I/O Ring Voltage 1.375 1.5 1.625 V
ICPUPU Processor I/O Ring Current 0.0 10.0 20.0 mA
VCLK Processor Clock Rail Voltage 2.375 2.5 2.625 V
ICLK P rocessor Clo ck Rail Current 24.0 35.0 80.0 mA Note 5
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Table 20. Vcore Power Conversion Efficiency
Figure 5. VR Efficiency Chart
Vcore
Icore
(A) Efficiency at
V_DC + 7.50V Efficiency at
V_DC + 12.0V Efficiency at
V_DC + 21.0V
1 77% 71% 63%
2 85% 82% 78%
3 87% 85% 81%
4 87% 86% 82%
5 86% 86% 83%
6 85% 85% 83%
7 84% 84% 82%
8 83% 83% 81%
9 81% 82% 81%
10 80% 81% 80%
11 79% 80% 79%
VR Eff i ciency
60%
62%
64%
66%
68%
70%
72%
74%
76%
78%
80%
82%
84%
86%
88%
90%
1234567891011
Icore(A)
Efficiency(%)
V_DC = 7.5V
V_DC = 12V
V_DC = 21V
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32 Datasheet 245304-002
5.3.2 Voltage Regulator Control
The VR_ON pin on the connector allows a 3.3-V signal to control the voltage regulator. The
system manufacturer can use this signal to turn the voltage regulator on or off. VR_ON should be
controlled as a function of the same signal (SUSB#) used to control the system’s switched 5.0-V
and 3.3-V power planes. The PIIX4E/M defines Suspend B as the Power Management state in
which power is physically removed from the processor and the voltage regulator. In this state, the
SUSB# pin on the PIIX4E/M controls these power planes. The mobile module provides the
VR_PWRGD signal, which indicates that the voltage regulator power is operating at a stable
voltage level. The system manufacturer should use this signal on the system electronics to control
power inputs and to gate PWROK to the PIIX4E/M South Bridge. Table 21 provides the detailed
definitions and sequences of the voltage signals.
The following list includes additional specifications and clarifications of the power sequence
timing and Figure 6 provides an illustration.
1. The VR_ON signal may only be asserted to a logical high by a digital signal after V_DC ≥
7.5V, V_5 ≥ 4.5V, and V_3 ≥ 3.0V.
Table 21. Volt age Signal Definitions and Sequences
Signal Source Definitions and Sequences
V_DC System Electronics
V_DC is required to be between 7.5V and 21.0V DC and is driven by
the system electronics’ power supply. V_DC powers the Pentium III
processor mobile module DC-to-DC converter for the processor core
and I/O voltages.
The mobile module cannot be hot inserted or removed while
V_DC is powered on.
V_5 System Electronics V_5 is supplied by the system electronics for the voltage regulator.
V_3 System Electronics V_3 is supplied by the system electronics for the 82443BX and powers
the mobile module’s linear regulators for generating the V_CLK and
V_CPUPU voltage rails. It stays on during suspend.
V_3S System Electronics V _3S is supplied by the system electronics, and V_3S is shut off
during suspend.
VR_ON System Electronics
VR_ON is a 3.3-V signal that enables the voltage regulator circuit.
When driven active high, the voltage regulator circuit is activated. The
signal driving VR_ON should be a digital signal with a rise and fall time
of less than or equal to 1 µS. (VIL (max)= 0.4V, VIH (min)= 3.0V.)
V_CORE Module A result of VR_ON being asserted, V_CORE is an output of the DC-
DC regulator on the mobile module and is driven to the core voltage of
the processor.
VR_PWRGD Module
Upon sampling the voltage level of V_CORE (minus tolerances for
ripple), VR_PWRGD is driven active high. If VR_PWRGD is not
sampled active within 1 second of the assertion of VR_ON, then the
system electronics should deassert VR_ON. After V_CORE is
stabilized, VR_PWRGD will assert to logic high (3.3V). This signal
must not be pulled up by the system electronics. VR_PWRGD should
be "logically ANDed" wit h V_3S to generate the PII X4E/M input signal,
PWROK. The system electronics should monitor VR_PWRGD to verify
that it is asserted high prior to the active high assertion of PIIX4E/M
PWROK.
V_CPUPU Module V_CPUPU is 1.5V. The system electronics uses this voltage to power
the PIIX4E/M-to-processor interface circuitry.
V_CLK Module V_CLK is 2.5V. The system electronics uses this voltage to power the
HCLK[0:1] drivers for the processor clock.
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245304-002 Datasheet 33
2. The Rise Time and Fall Time of VR_ON must be less than or equ a l to 1.0 µS.
3. VR_ON has its VIL (m ax) = +0.4V and VIH (min) = +3.0V.
4. The VR_PWRGD will get asserted to logic hig h (3.3V) after V_CORE is stabilized and V_ DC
reaches 7.5V. This signal should not and can not be pulled up by the system electronics.
5. In the power-on process, Intel recommends to raise the higher voltage power plane first
(V_DC), followed by the lower power planes (V_5, V_3), and finally assert VR_ON after
above voltage levels are met on all rails. For powering off, follow the reverse process, i.e.
VR_ON gets deasserted, followed by the lower power planes, and finally the higher power
planes.
6. VR_ON must monotonically rise through its VIL to VIH and fal l through it s VIH to VIL points.
The sign of slope can not change between VIL and VIH in rising and VIH and VIL in falling.
7. VR_ON must provide an instan taneous in-rush current to the mo bile m odule with the
following values as listed in Table 22.
8. VR_ON Valid-Low Time specifies how long VR_ON needs to be low for a valid off, before
VR_ON can be turned back on again. In going from a valid on to off and then back on, the
following conditions mus t be met to prevent damage to the OEM system or the mobile
module:
• VR_ON must be low for 1.0 mS.
• The original voltage level requirements for turn-on must be met before assertion of
VR_ON (i.e. V_DC ≥ 7.5V, V_5 ≥ 4.5V, and V_3 ≥ 3.0V).
Table 22. VR_ON In-rush Current
Inst antan eous DC Operating
Maximum 41.0 mA 0.1 µA
Typical 0.2 mA 0.0 µA
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34 Datasheet 245304-002
Figure 6. Power Sequence Timing
5.3.3 Power Planes: Bulk Capacitance Requirements
In order to provide ad equate filtering and in-rush current protection for any system design, bulk
capacitance is required. A small amount of bulk capacitance is supplied on the mobile module.
However, in order to achieve proper filtering, additional capacitance should be placed on the
system electronics.
NOTES:
1. PWROK on I/O board should be active on when VR_PWRGD is active and V_3S is good.
2. CPU_RST from I/O board should be active for a minimum of 6.0 mS after PWROK is active and PLL_STP# and CPU_STP# are inactive.
Note that PLL_STP# is an AND condition of RSMRST# and SUSB# on the PIIX4E/M.
3. This is the 5V power supplied to the MMC-2 connector. This should be the first 5.0-V p lane to power up. Stays on during suspend.
4. V_DC >= 7.5V, V_5>=4.5V, V_3S>=3.0V.
5. VR_PWRGD is spec ified active by the module regulator within less than or equal to 6.0-mS maximum after the assertion of VR_ON.
6. V_CPUPU and V_CLK are generated on the mobile module.
V_CPUPU
V_CLK
NOTE 6
NOTE 6
VR_PWRGD
V_DC
V_3
V_5
V_3S
VR_ON NOTE 4
0 MS MIN
NOTE 3
0 MS MIN
NOTE 5 0 MS MIN
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245304-002 Datasheet 35
Table 23 details the bulk capacitance requirements for the system electronics.
Table 23. Bulk Capacitance Requirements
NOTES:
1. Placement of above capacitance requirements should be located near the connector.
2. V_CLK filtering should be located next to the system clock synthesizer.
3. The Ripple current specification depends on the V_DC input for the mobile module. See Figure 7 below.
4. If Tantalum* Capacitors are used, a 50% voltage derating practice must be observed. For example, a 5.0-V
rail requires a 10.0-V rated capacitor.
5. In order to reduce ESR, Intel recommends the use of multiple bulk capacitors rather than a single large
capacitor.
6. Intel strongly recommends that system manufacturers pay close attention to capacitor design considerations.
Specifically, the "Capacitance vs. Temperature De-rating Curve," "Capacit ance vs. Applied DC Voltage De-
rating Curve," and the "Capacitance vs. Frequency De-rating Curve." Some capacitor dielectrics are
particularly susceptible to these conditions, for example Y5V ceramic capacitors.
7. Specifications labeled N/A are not available.
Power
Plane
Bulk Capacitance Requirements High Frequency Capacitance
Requirements Notes
Total
Capacitance ESR
Max RMS Ripple
Current
V_DC 100.0 µF 20.0 mΩ 3.0A~ 5.0A 0.1 µF, 0.01 µF Notes 1,3,4,5,6
V_5 100.0 µF 100.0 mΩ1.0A 0.1 µF, 0.01 µF Notes 1,4,5,6
V_3 470.0 µF 100.0 mΩ1.0A 0.1 µF, 0.01 µF Notes 1,4,5,6
V_3S 100.0 µF 100.0 mΩN/A 0.1 µF 0.01 µF Notes 1,4,5,6
VCC_AGP 22.0 µF 100.0 mΩ1.0A 0.1 µF, 0.01 µF Notes 1,4,5,6
V_CPUPU 2.2 µF N/A N/A 8200.0 pF Notes 1,5,6,7
V_CLK 10.0 µF N/A N/A 8200.0 pF Notes 1,2,5,6,7
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36 Datasheet 245304-002
Figure 7 shows the dependence of V_DC ripple current on V_DC.
Figure 7. V_DC Ripple Current
5.3.4 System Power Supply Protection Guidelines
5.3.4.1 DC Power System Protection
The recommended DC Power System Protection consists of the following:
•A DC Power Supp ly capable of delivering 7.5 V to 21.0V to the mobile m odule
•An Overcurrent Protection circu it providing a mean s to limit the maximum current available to
the system
•A Slew Rate Control circuit providing a controlled voltage slew rate at turn on, which provides
protectio n for components sens itive to fast voltage rise tim es
•An Undervoltage Lockout ci rcu it to protect agai ns t pot en tiall y damaging high cu rrents , whi ch
might be encountered if the DC Power Supply voltage is too low
•An Overvoltage Lockout circuit providing protection from potentially damaging high DC
Power Supply voltages
• Bulk Decoupling Capacitors prov iding filtering and a reservo ir of energ y that can give a faster
transient response than the power supply
V_DC I nput Ri ppl e Curr ent vs. V_DC Vol tage
5.32
5.09
4.86
4.64
4.45
4.28
4.12
3.98
3.85
3.73
3.62
3.52
3.43
3.35
3.27
3.19
3.12
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
5.50
6.00
7 8 9 101112131415161718192021
V_DC(V)
Input Ripple Current(A)
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245304-002 Datasheet 37
Figure 8. V_DC Power System Protection Block Diagram
5.3.4.2 V_DC Power Supply
The power supply must be able to deliver 7.5V to 21.0V to the mobile module, measured at the
mobile mod ul e.
5.3.4.3 Overcurrent Protection
The overcurrent protection circuit provides a way to limit current drawn by the mobile module.
Under normal op erating cond itions, I_DC shou ld no t be ex pected to exceed 3.0A at V_ DC = 7 .5V.
To allow for component variations and margining issues, a reasonable I_DC current limit would be
6.0A.
V_DC Power
Supply
(See Table 19)
Overcurrent
Protection
(See Section 5.3.4.3)
Undervoltage
Lockout
(See Section 5.3.4.6)
Overvoltage
Lockout
(Se e S ectio n 5.3. 4.7)
Slew Rate
Control
(See Section 5.3.4.5)
Bulk
Decoupling
Capacitors
Module
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38 Datasheet 245304-002
Figure 9. Overcurrent Protection Circuit
At the other end of the V_DC input range, the current will be somewhat less. At 14.0V, for
example, the corresponding power could be produced with only 3.0A. In this example, a
comparator, U1A, will be used to sense when V_DC is over 14.0V and will shift the current limit
from 6.0A to 3.0A.
•Let I_DC(limit)= 6.0A
•Let I_DC(limit2)= 3.0 A
•Let b(Q1)= 100
•Let R1=5.0 mΩ= 0.005Ω
•Let R12= 100.0Ω
•Let R13= 100.0Ω
•Let V(R14)≈ 1.8V
•Let I(R20)≈ 100.0 µA
•Let C36= 2.0K
Slew Rate ControlOver Current Protection
R33
R36
R35 V_DC
U1A
C18
2.5V
M3
2N7000
M1
Si4435DY
C9
V_DC
V_DC
U1B
Q1
2N2222A
LM4040
+
-
Power Supply
R2
R4 R16
R14
R12
R13
R20
R1
NOTE
: U1B must be able to operate with inputs near the V_DC
rail. Consider the LMC6 762.
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245304-002 Datasheet 39
Figure 10. Current Shift Model
5.3.4.4 Current Limit Shif t Point
Comparator U1A should switch when the non-inverting input is equal to the 2.5-V reference on the
inverting inpu t, or when the voltage applied to V_DC is equal to the selected switch p oint and the
voltage dropped across R36 is 2.5V. This drop should occur when V_DC= 14.0V.
Equation 1.
(The nearest standard 1% value is 9.01 kΩ.)
Comparator U1A will pull its output low when V_DC falls below 14.0V. This drop will effectively
put R33 in parallel with R14.
When power is initially applied to the circuit, C18 charges up to 2.5V through R20. This slowly
rising v oltage i s appli ed to the b ase of t he curren t source, Q1. The voltage on R14 is ap proxi mately
2.5V minus the base-emitter drop of about 0.7V (at 25 °C ): V(R14) ≈ 1.8V. Q1 is a 2N2222A with a
moderate β of about 100. Therefore, the current through R13 is approximately equal to the current
through R14.
The charging of C18, provides a small incremen t of delay as U1 will not allow R4 to pull up the
Gate of M3 until Q1 h a s pulled the no n-inverting input of U1 do wn slightly.
The voltage developed across R1 is a function of the load.
Equation 2.
V(R1)= I_DC*R1
U1A +in
V_DC
R36
R35
R35 V_DC Vref
()
Vref
R36
R35 14 2.5
()
2.5
2000
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III Processor Mobile Module MMC-2
40 Datasheet 245304-002
If the maximum I_DC expected is 3.0A, consider setting the I_DC Current Limit at 6.0A. If the
Current Sense resistor, R1, is selected to be 5.0 mΩ (0.005Ω), the maximum voltage developed
across this resistor can be calculated. See below.
Consider now the case where V_DC is above 14.0V.
Equation 3.
I_DC(limit)*Rsense= 3.0A*5E-3= 15.0 mV)
The Offset voltage applied to the inverting input of the comparator, U1B, should then be 15 .0 m V.
If R13 is selected to be 100.0Ω, the current can then be calculated as shown in Equation 4 below.
Equation 4.
Ioffset= 15.0 mV/100Ω= 150.0 µA
Note: For a successful design, the input offset of the comparator must be considered. One option is that
the design offset is at least ten times greater than the device offsets.
The value of R14 can now be calculated as shown in Equation 5 belo w.
Equation 5.
R14= 1.8V/150.0 µA= 12.0 kΩ
(The nearest 1% value is 12.1K.)
Consider now the case when V_DC drops below 14.0V and the cu rrent lim its shift to 6.0A.
Equation 6.
I_DC(limit)*Rsense= 6.0A*5E-3= 30.0 mV
The Offset vo ltage applied to the inverting inpu t of the comp arator, U1B, should then be 30 mV. If
R13 is selected to be 100Ω, the current can then be calculated as shown in Equation 7 below.
Equation 7.
Ioffset= 30.0 mV/100Ω= 300.0 µA
The value of parallel combination of R14 and R33 can now be calculated as shown in Equation 8
below.
Equation 8.
Rcombo= 1.8V/3 00.0 µA= 6.0 kΩ
R14 is a 12.0- K resistor. If R33 is also a 12.0-K resistor, the parallel combinati on will be 6.0K.
In R20, the L M4040-2.5 has a very wid e operatin g current range fro m 60.0 µA to 15.0 µA. In order
to provide the Current Source Base drive you will need Equation 9.
Equation 9.
Ibase≈ Ic/b= 30 0.0 µA/100= 3.0 µA
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III Processor Mobile Module MMC-2
245304-002 Datasheet 41
If selected fo r I(R2 0), 10 0 µA would be adequate fo r the Refe rence and Current Sour ce Base drive.
Since both of these currents must be satisfied at the low-power supply margin, a V_DC of 7.5V
will be assumed.
Equation 10.
R20 = (V_DC-Vref)/I(R20) = (7.5-2.50)/100.0 µA= 50.0 kΩ
(To allow for component tolerances, 51.0 kΩ is recommended.)
5.3.4.5 Slew Rate Control
The Slew Rate Control regulates the rate that the power sup ply voltage is applied to the system.
•Let the Threshold voltage of M1, Vt = -1.0V
•Let M1 VGS(sat) = -2.4V, also denoted as Vsat
•Let R16 = 100.0 kΩ
•Let t_delay = 500.0 µS
•Let Ctotal = The sum or the Bulk capacitors + the sum of the module capacitors = 5 X 22.0 µF
+ 2 X 4.7 µF= 119.4 µF
M1 is a low RDS(on) P-Channel MOSFET su ch as the Siliconix* Si4435DY. When the power
supply voltage is applied and increased to a value that exceeds the Lockout value, (7.5V will be
used in this example), the Undervoltag e Lockout circuit, allows R4 to pull up the gate of M3 to
start a turn-on sequence. M3 pulls its drain toward ground, forcing current to flow through R2. M1
will not st art to source any current until after t_dela y, with t_delay defi ned as shown in Equation 11
and Equation 12 below.
Equation 11.
Equation 12.
The publi s hed mi nimu m t hres ho l d of t he Si 443 5DY i s a VGS of -1.0V, i.e. C9 must charge to 1 .0V
before M1 starts to turn on. The delay, t_delay, is the tim e requ ired to charge C9 to 1.0V.
Assuming a negligible voltage drop across M3, when M3 is ON, the voltage on the Gate of M1,
VG, with respect to ground, is the voltage developed across R2: VG≡ V(R2). If a minimum steady-
state bias on M1 is -4.5V, this will be the voltage dropped across R16. At the low end of the V_DC
margin, i.e. 7.5V, then VG can be derived from Equation 13 below.
Equation 13.
VG = V_DC+VGS = 7.5V- 4.5V = 3.0V (with respect to ground)
t_delay R2 C9
.ln 1 Vt
V_DC Vg
.
Vgs R16
R16 R2
V_DC
Pentium
III Processor Mobile Module MMC-2
42 Datasheet 245304-002
Equation 14.
(The nearest standard 1% value is 66.5 kΩ. The example will continue with R2= 66.5 kΩ.)
Rearranging Equation 8 to solve for C9 yields the follo wing result, as shown in Equation 15.
Equation 15.
Now a value for C9 can be calculated. See Equation 16 below.
Equation 16.
C 9= 0.354 µF
(A close standard value of 0.33 µF will yield a t_delay of 466.0 µS.)
The ramp-up time, t_ramp, is defined as shown in Equa tion 17 below.
Equation 17.
If M1 has a VGS(sat) of -2.4V, then see Equation 18 below.
Equation 18.
t_ramp = 948.8 µS
The maximum current during the power-up ramp is shown in Equation 19 below.
Equation 19.
If the total capacitance, Ctotal on the V_DC bus, is 119.4 µF, then see Equation 20 below.
Equation 20.
Imax = 0.994A
From the values assumed and calculated, t_delay = 466.0 µS, t_ramp = 949.0 µS, and Imax = 944
mA.
R2 Vg R16
.
V_DC Vg ,R2 66.67 k Ω
=
C9 t_delay
R2 ln 1 Vt
V_DC Vg
.
t_ramp R2 C9
.ln 1 Vsat
Vgs
.t_delay
≈
Imax Ctotal tv
d
dCtotal V_DC
t_ramp
.
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III Processor Mobile Module MMC-2
245304-002 Datasheet 43
5.3.4.6 Undervoltage Lockout
The circuit below shows the Undervoltage Lockout portion of the V_DC Supply circuit. This
circuit protects and locks out the applied voltage to the mobile module to prevent an accidental
turn-on at low V_DC supply voltages.
Warning: A low voltage applied to the mobile module could result in dest ructive current levels.
Figure 11. Undervoltage Lockout
The output of the LM339 comparator is an open-collector and is low when the applied voltage at
V_DC is less than 7.5V, which holds the Gate of M3 lo w. Consequently, the Slew Rate Controller
is not allowed to turn on. The 2.5-V reference, Vref, voltage is derived from D7 in Figure 9. When
the non-inverting input of the comparator exceeds Vref, 2.5V, the comparator trips and allows its
output to go to a High Z state. The Gate of M3 can then be pulled up by R4, starting the controlled
Power-up Slew.
The model in Figure 12 will be used to calculate the Undervolt a ge Lockout trip point.
Undervoltage Lockout
V_DC_A
R4
M3 Gate
Vref
2.5V
V_DC
V_DC
LM339
R25
R18
R17
Let V_DC_UVlock=7.5V
Let R17=10 k
Ω
Let R25=1 mΩ
Let VCEsat= 0.3V
Let Vref= 2.5V
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III Processor Mobile Module MMC-2
44 Datasheet 245304-002
Figure 12. Undervoltage Lockout Model
VCEsat is the saturation voltage of the comparator output transistor.
The comparator trip point voltage can be calculated with Eq uat ion 21.
Equation 21.
If power to the mobile module is to be held off until V_DC exceeds 7.5V, Equation 21 can be
rearranged to solve for R18.
Equation 22.
A value fo r R18 c an be determined by plugging these value s into Equation 23.
Equation 23.
R18 = 11.0 kΩ
(4.99 kΩ is a standard 1% resistor value, which would provide lockout below 7.532V.)
5.3.4.7 O vervoltage Lockout
The mobile module operates with a maximum input voltage of 21.0V. This circuit can be set to lock
out the input voltage if it exceeds the desired input.
Unde r voltage Lockout Model
+
VCEsat
2.5V
V_DC
R25 R18
R17
V_DC_UVlock Vref Vref
R18
Vref VCEsat
R25 R17
R18 VrefR17
.R25
.
R25 V_DC_UVlock Vref
()
.R17 Vref VCEsat()
.
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III Processor Mobile Module MMC-2
245304-002 Datasheet 45
Figure 13. Overvoltage Lockout
The LM339 comparator is an open-collector output and is pulled low when the applied voltage at
V_DC is too high, thus disabling the Slew-rate circuit.
The model in Figure 14 below will be used for component calculations.
Figure 14. Overvoltage Lockout Model
Assume that th e desired V_DC Overvoltage Lockout is 21.0V. Using E quation 24, the input to the
non-inverting input of the OV Lockout comparator can be calculated with the following equations.
Overvoltage Lockout
M3 Gate
V_DC_A
R4
2.5V
V_DC
V_DC
LM339
R27
R23
R24
R26
Vref
Let R4=100KΩ
Let R24=100K
Let R26=1MΩ
Let R27=1KΩ
Overvoltage Lockout Model
Vinv
R23
R24
V_DC
Vref
Vnoninv
V_DC_A
R27
R26
R4
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46 Datasheet 245304-002
Equation 24.
Equation 25.
Vnon inv= 2.517V
Equation 26.
The output of the OV Lockout comparator will become active and pull down when the inverting
input beco mes greater than the 2.517V input on the non-inverting input. Equatio n 26 can be
rearranged to solve for R23.
Equation 27.
The OV Lockout comparator trip point is defined by Vinv = Vnoninv = 2.517V. Equation 28
provid es a solution fo r R23 .
Equation 28.
R23= 13.618 kΩ
(The nearest standard 1% value is 13.7 kΩ.)
If V_DC exceeds 6.0V, the voltage on the OV Lockout comparator inverting input will exceed
2.517V causing the comparator to trip, pulling its output low and disabling th e Power Skew
Control circuit which, in turn, wil l disconnect V_DC from the mobil e module.
Vnoninv Vref R27 V_DC_OVlock Vref
()
.
R4 R26 R27
Vinv V_DC_OVlockR23
.
()
R23 R24
R23 R24Vinv
.
V_DC_OVlock Vinv
Pentium
III Processor Mobile Module MMC-2
245304-002 Datasheet 47
Figure 15. Recommended Power Supply Protection Circuit for the System Electronics
Figure 16. Simulation of V_DC Voltage Skew
Under
Voltage Lockout
Over Voltag e Loc kou t
Input Bulk Decoup ling Cap acitors MMO Processor M odule
Over Cu rrent P rotection Slew Rate Control
27uF 4.7uF
4.7uF
27uF27uF
27uF27uF
2.5V
2.5V
V_DC
V_DC
V_DC
V_DC
LM339
LM339
M3
2N7000
Si4435DY
C9
V_DC
V_DC
V_DC
V_DC
LM339
2N2222A
LM339
C18
LM4040
+
-
A
C Adaptor
0.3 1M 0.3
0.3
0.30.3
0.3
0.3
R25
R27
R23
R24
R26
R18
R17
R2
R4 R16
R14
R33
R12
R13
R36
R35
R20
R1
Com po nents values assu me d and calculated
R1 5mΩR20 20 kΩ, ± 5%
R2 5.62 kΩ, ± 1% R 23 71.5 kΩ, ± 1%
R4 100 kΩ, ± 1% R 24 100 kΩ, ± 1%
R12 100Ω, ± 1% R25 1M, ± 5%
R13 100Ω, ± 1% R26 1M, ± 5%
R14 1 2.1 kΩ, ± 1% R 27 1 kΩ, ± 1%
R16 100 kΩ, ± 1% R 33 12.1 kΩ, ± 1%
R17 10 kΩ, ± 1 % R3 5 9.1 kΩ, ± 1%
R18 11 kΩ, ± 1% R36 2 kΩ, ± 1%
C9 0.33 µF
C18 0.1 µF
Pentium
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48 Datasheet 245304-002
5.4 Active Thermal Feedback
5.5 Thermal Sensor Configuration Register
The configuration register of the thermal sensor controls the operating mode (Auto Convert vs.
Standby) of the device. Since the processor temperature varies dynamically during normal
operation, Auto Convert mod e shou ld be u sed ex clusively to mo nitor processor temp erature. Table
25 shows the format of the configuratio n register. If the RUN/STOP bit is low, then the thermal
senso r enters Au to Convert mode. If the RUN/STOP bit is se t high , then the thermal sensor
immediately sto ps converting and enters the Standby mode. The thermal sensor will still perform
temperature conversions in Standby mode when it receives a one-shot command. However, the
result of a one-shot command during Auto Convert mode is not guaranteed. Intel does not
recommend using the one-shot command to monitor temperature when the processor is active, only
Auto Convert mode should be used. See the Intel Mobile Module Thermal Diode Temperature
Sensor Application Note available through your Intel Field Representative.
NOTE: All RFU bits should be written as “0” and read as “don’t care” for programming purposes.
Table 24. Thermal Sensor SMBus Address
Function SMBus Address
Thermal Sensor 1001 110
Table 25. Thermal Sensor Configuration Register
Bit Name Reset State Function
7 MSB MASK 0 Masks SMBALERT# when high
6 RUN/STOP 0 Standby mode control bit. If low, the device enters Auto Convert
mode. If high, the device immediately stops converting and enters
Standby mode where the one-shot command can be performed.
5-0 RFU 0 Reserved for future use
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245304-002 Datasheet 49
6.0 Mechanical Specification
This section provides the physical dimensions of the Pentium III processor mobi l e modu le.
6.1 Module Dimensio ns
Figure 17 shows the board dimensions and the connector orientation.
Figure 17. Board Dimensions and MMC-2 Connector Orientation
6.1.1 Pin 1 Location of the MMC-2 Connector
Figure 18 shows the location of pin 1 of the 400-pin connector.
Module Mechanical X-Y-Z Dimensions and Thermal
Attach Points
Unless otherwise specified:
Tolerances
Angles ± 0.5°
.X ± 0.2
.XX ± 0.15
.XXX ± 0.075
* All Dimensions are in mm
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50 Datasheet 245304-002
Figure 18. Board Dimensions and MMC-2 Connector—Pin 1 Orientation
6.1.2 P rinted Circuit Board
Figure 19 shows the Pentium III processor mobile module associated minimum and maximum
thickness of the prin ted circuit board (PCB). The range of PCB thickness allows for different PCB
technolog ies to be used with current and futu re Intel m obile m odules.
Note: The system manufacturer must ensure that the mechanical restraining method and/or system-level
EMI contacts are able to support this range of PCB for compatibility with future Intel mobile
modules.
Figure 19. Printed Circuit Board Thickness
Min: 0.90 mm
Max: 1.10 mm
Pri nted Circuit Board
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III Processor Mobile Module MMC-2
245304-002 Datasheet 51
6.1.3 Height Restrictions
Figure 20 shows the mechanical stack-up and the associated component clearance requirements.
This is the module keep-out zone and should not be entered. The system manufacturer establishes
board-to-board clearance between the module and the system electronics by selecting one of three
mating connectors available in heights of approximately 4 mm, 6 mm, and 8 mm. The three sizes
provide flexibility in choosing the system electronics components between the two boards.
Information on these connectors can be obtained from your Intel sales representative.
Figure 20. Keep-out Zone
6.2 Thermal Transfer Plate
The thermal transfer plates (TTP) provide heat dissipation on the mobile Pentium III processor and
the 82 443B X. The TTP may vary on different generatio ns of I ntel mo bile mo dules . The TTP
provides the thermal attach point, where a system manufacturer can transfer heat through the
notebook system using a heat pipe, a heat spreader plate, or a thermal solution. Attachment
dimensions for the thermal interface block to the TTP are provided in Figure 21, Figure 22, and
Figure 23. The TTP on the mobile module is designed to be a high efficiency spreader. To fully
take advantage of the mobile module therm al design and optimize the system therm al performance,
the contact area (Ac) needs to be a minimum of 30 mm x 30 mm. While it crucial to maximize the
contact area, it is equally important to ensure that the contact area and/or the mobile module is free
from warpage in an assembled configuration.
Warning: If warpage occurs, the thermal resistance of the mobile module could be adversely affected.
When attaching a mating bl ock to either TTP, Intel recommends that a thermal elastomer be used as
an interface material. This material reduces the thermal resistance. The OEM thermal interface
block should be secured to the CPU TTP with M2 screws using a maximum torque of 1.5 Kg*cm
to 2.0 Kg*cm (equivalent to 0.147 N*m to.197 N*m). The thread length of the M2 screws should
Note 3
Note 3
NOTES:
1. All values are nominal unless otherwise specified.
2. 3D CAD model (PRO/E Native) Available upon
request.
3. These dimensions have changed.
Pentium
III Processor Mobile Module MMC-2
52 Datasheet 245304-002
be 2.25-mm gageable thread (2.25-mm minimum to 2.80-mm maximum). The mobile module is
designed to ensure that the thermal resistan ce between the pr ocessor die cen ter and a po int dire ctly
above on the TTP surface is ≤ to 0.35° C/W, under the following set of conditions.
•RTTP-a = TTP (center point) to ambient = ~2.4° C/W
•Ac = Contact area centered between the two TTP attach points = 30 mm x 30 mm.
Figure 21. 82443BX Thermal Transfer Plate (Reference Only)
Figure 22. 82443BX Thermal Transfer Plate Detail
Rivets for PCB Mounting
BX TTP
1.000 ± 0.8 9
3.150
1.050
6.280
3.569
NOTE: All tolera n ces a re ± 0.015 mm unless otherwise no ted.
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III Processor Mobile Module MMC-2
245304-002 Datasheet 53
Figure 23. CPU Thermal Transfer Plate (Reference Only)
6.3 Module Physical Support
6.3.1 Module Mounting Requirements
Three mounting holes are available for securing the module to the system base or the system
electronics. See Figure 17 for mounting hole locations. These hole locations and board edge
clearances will remain fixed for all Intel mobile modules. All three mounting holes should be used
to ensure long term mechanical reliability and EMI integrity of the system.
The board edge clearance includes a 0.762-m m (0.030-in ches) wide EMI containment ring around
the perimeter of the mobile module. This ring is on each layer of the PCB and is grounded. The
hole patterns also have a plated surrounding ring to use a metal standoff for EMI shielding
purposes. Standoffs should be used to provide support for the installed mobile module. However,
the warpage of the baseboard can vary and should be calculated into the final dimensions of the
standoffs used. All calculations can be made with the Intel MMC-2 Standoff/Receptacle Height
Spreadsheet. Information on this spreadsheet can be obtained from your local Intel Field
Representative.
Figure 24 shows the stando ff support hole detai ls , th e board edge cl earan ce, and the dimensi ons of
the EMI containment ring. No components are placed on the board in the keep-out area.
Pentium
III Processor Mobile Module MMC-2
54 Datasheet 245304-002
Figure 24. Standoff Holes, Board Edge Clearance, and EMI Containment Ring
6.3.2 M odule Weight
The Pentium III processor mobile module weighs approximately 56 grams.
Hole deta il, 3 pla ce s
0.762 mm width of EMI containment ring
1.27+/- 0.19 mm board edge to EMI ring
2.54+/-0.19 mm keep-out area
3.81+/-0.19 mm board edge to hole centerline
3.81 +/- 0.1 9 mm
4.45 m m diameter grou nded ring
+ 0.050 mm
- 0. 025 mm
hole diameter
2.41 3 mm
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245304-002 Datasheet 55
7.0 Thermal Specification
7.1 Thermal Design Power
The power handling capability of the system thermal solution may be reduced to less than the
recommended typical Thermal Desig n Power (TDP) as shown in Table 26 with the implementation
of firmware/software control or "thro ttling” that reduces the CPU power consum ption and
dissipation. The typical TDP is the typical po wer dissipation under normal ope rating cond itions at
nominal V_CORE (C PU power supply) while executing t he worst case power instru ction mix. This
includes the power dissipated by all of the relevant components. During all operating
environments, the processor junction temperature, TJ, must be within the specified range of 0° C to
100 ° C.
Table 26. Thermal Design Power Specification
NOTES:
1. During all operating environments, the processor temperature, Tj, must be within the special range of 0 °C to
100°C.
2. TDPModule is a thermal-solution design reference point for thermal solution readiness for total module power.
Symbol Parameter Typical
450 MHz Typical
500 MHz Notes
TDP Module Module Thermal Design Power 14.1W 15.0W Module = core + 82443BX +
voltage regulator
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56 Datasheet 245304-002
8.0 Labeling Information
Intel mobile modules are tracked in two ways. The first is by the product tracking code (PTC). Intel
uses the PTC label to determine the assembly level of the module. F igure 25 shows where the PTC
can be found on the module. The PTC contains 13 characters and provides the following
information.
Example: PML50002001AA
Definition:
AA - Processor Module = PM
B- Pentium
III processor mobile module = L
CCC - Speed Identity = 450 , 500
DD - Cache Size = 02 (256K)
EEE - Notifiable Design Revision (Start at 001)
FF - Notifiable Processor Revision (Start at AA)
Note: For other Intel mobile modules, the second field (B) is defined as:
Pentium II Processor Mobile Module (MMC-1) = D
Pentium II Processor Mobile Module (MMC-2) = E
Pentium II Processor Mobile Module With On-die Cache (MMC-1) = F
Pentium II Processor Mobile Module With On-die Cache (MMC-2) = G
Celeron Processor Mobile Module (MMC-1) = H
Celeron Processor Mobile Module (MMC-2) = I
Pentium
III Processor Mobile Module MMC-2
245304-002 Datasheet 57
Figure 25. Product Tracking Code
The second tracking meth od is by an OEM generated softw a re utility. Four strapping resistor s
located on module determine its production level. If connected and terminated properly, up to 16
module-revision lev e ls can be determined. An OEM generated software utility can then read these
ID bits wi th CPU IDs and steppi ng IDs to provid e a complet e module manufactur ing revi sion lev el.
For current PTC and module ID bit information, please refer to th e latest Intel mobile modul e
product change notification (PCN) letter, which can be obtained from your local Intel Field
Representative.
Secondary Side of the Module
Intel Serial Number Intel Assembly Identification
Product Tracking Code
ISYWW6666 PBA XXXXXX-XXX
XXXXXXXXXXXXX
Pentium
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58 Datasheet 245304-002
9.0 Environmental Standards
The environmental standards are defined in Table 27.
Table 27. Environmental Standards
Parameter Condition Specification
Temperature Cycle Non-operating
Operating -40 °C to 85 °C
0 °C to 55 °C
Humidity Unbiased 85% relative humidity at 55°C
Voltage V_5
V_3 5.0V ± 5%
3.3V ± 5%
Shock
Non-operating
Unpackaged
Packaged
Packaged
Half Sine, 2G, 11 mS
Trapezoidal, 50G, 11 mS
Inclined impact at 5.7 feet/S
Half Sine, 2 mS at 36 inches simulated free fall
Vibration Unpackaged
Packaged
Packaged
5 Hz to 500 Hz, 2.2-gRMS random
10 Hz to 500 Hz, 1.0 gRMS
11,800 impacts 2 Hz to 5 Hz (low frequency)
ESD Damage Human Body Model Non- powered test of the mobile module only for non-
catastrophic failure. The module is tested at 2 kV and then
inserted in a system for functional test.
