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accuracy of the information contained herein. Contact
Sandpoint
Digital DNA
MPPMC750 - Altimus
MPPMC755 - Altimus
MPPMC7400 - Altimus
MPPMC7410 - Altimus
MPPMC7450 - Valis
MPPMC8260 - Cygnus
...tbd...
This schematic is provided for reference purposes only.
No warranty, expressed or applied, is made as to the
All information is subject to change without notice.
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Motorola Sale/FAEs to obtain the latest information on
this product.
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from Motorola
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Supporting
MPPMC603 - Talos
MPPMC740 - Talos
MPPMC745 - Talos
MPPMC8240 - Unity
MPPMC8245 - Unity
16
Cover Page
19
01
Part numbers used are for reference only; compatible
parts may be used; refer to the bill of materials.
Motorola and the Motorola logo are registered
trademarks of Motorola. PowerPC is a trademark of
ContentsSchematic Notes
Configuration Switches; Monitor LEDs
All inductances are in microhenries (uH).
07 64-bit PCI PMC Connector
05
98DEC11
Connector orientation; crosspoint tweaks.
18
the most-significant bit), except where industry standards
apply (i.e. PCI). Little-endian numbering is noted at the
Cindy Black
Designer
Sheet "-" VertZoneLetter HorizZoneNumber
Processor PMC Socket
04
SPF100 - Arbiter/Interrupt Controller
VCC_5V
Imperial Poobah
4.
5.
source component.
Board impedance is 50-60 ohms.
General Information
and ground unless explicitly shown otherwise. Global power Routing and Layout Information
02 Block Diagram
respective copyright holders. Diane, I am holding in my
Joey Tsai
13 Floppy, PC I/O Connectors12
17 PCI Boot ROMs, NVRAM
11
All buses follow big-endian bit numbering order (bit 0 is
Components
03
Power Supply
Pullups
Super I/O Controller
Gary Milliorn
Gary Wojcik
All fuses are self-resetting polyswitch (PTC) devices.
All ferrites are Z=50 ohms at 100 MHz.
Page
7.
REV DATE
All capacitors are SMD0603, in microfarads (uF), +/-20%.
X1 98MAR23
Original
X2
Serial Ports
Tony Saucedo
Unless otherwise specified:
All resistors are SMD0603, in ohms, 0.1W, +/-5%
06 Clock Generation
10
Integrated circuits have default connections to power
IBM. Other trademarks are the respective property of their
Team Sandpoint
Ivan Erickson
PCI Slots #3, #415 PCI Slots #1, #214
Documentation
Program Mgr.
PCB CAD
3.
IDE Connectors
08
hand a box of small, chocolate bunnies. All rights reserved.
6.
1.
2.
GND
Sandpoint
09
CHANGES
VCC_3.3V
GARY MILLIORN
PCI/ISA Bridge
by default; they are for test or manufacturing purposes only.
Components with the property "no_stuff" are not to be installed
*
X3 00JUL26
Many changes
connections are:
The sheet-to-sheet cross reference format is:
Non-Volatile RAM
<10>
(2) 33/66-MHz ATAPI
Interrupt Routing
Arbitration Routing
<05>
<09>
Reset Logic
PMC Connector
1) 512KB
ATX Chassis Header
PCI: 33 or 66 MHz
PC Clocks.
<06>
System Clocks
National 87307
PCI Slots
<14,15>
Super I/O Controller
<12,13>
<17>
Winbond W53C55x
ISA Bus
32-bit/64-bit 33/66 MHz PCI Bus
PPMC Extensions
PC I/O Ports
(2) 32-bit 5V PCI slots
(2) 64-bit 5V PCI slots
IDE Connectors
<16> <11>
66 MHz Extensions
32/64 bit
<17>
Southbridge
PS/2 Keyboard & Mouse
Parallel Port & Floppy
Serial Ports
APC/RTC Power Supply
8K bytes
<07-08>
Boot Flash Rom
<16>
Power Supply
Chassis Headers
<05>
2) 8MB




Use 12 mil traces for +12V and -12V.
Place IDSEL resistor near IDSEL pin.
Place series termination resistors near socket.
11
Recommended placement for status LEDs is under the disk tray area.
18
Use 12 mil traces for VBAT and VSTDBY.
Use equal-length traces on nets DAK(2:0) from WinBond to ’F138.
GARY MILLIORN
Place header in lower-left hand corner of the board (I/O connectors would
DISK
No special restrictions.
be in the upper right.
06
21
Distribute capacitors as shown, unless otherwise specified.
12
Allow clearance around header to allow for silkscreen legends.
Allow no other traces to enter or cross the crystal oscillator area.
10
PWR LED
Place LEDs in order and label with indicated text.
07
Use 12 mil traces between battery connector and diodes (before and after).
Keep series termination resistors near the output pins.
14
Place series resistors for parallel port near DB25 connector.
20
"
Surround MPC972 with 4-6 0.1uF caps to provide good ground-return paths.
15 Place IDSEL resistor near IDSEL pin.
Keep traces as short as possible. Pin swapping within and without of a package is
19
16
05
Layout/Routing Instructions
Place PMC at top side of ATX board.
SW
RESET STDBY
Use very short traces from 32kHz crystal to SuperI/O and to connected components.
Use heavy traces for power path through filter:
LED
Use split power planes for 5V and 3.3V power.
Route all PCI clock lengths to equal the WBCLK trace less 2.5"
08
IR Port
No special restrictions.
Keep traces very short between RS232 drivers (U1, U2) and DB9 connectors.
encouraged in order to minimize trace length.
+3.3V => VCCO pins & Rxxx/Rxxx Combo => VCCI Pin.
PWR
SWITCH
SPKR
Label pin groups as shown.
LED
09
Place EMI filtering caps and ferrite beads very close to DIN6 and DB25 connectors.
ON
Keep XTAL1 pin and jumper insanely close.
CHASSIS
17
Follow ATX chassis specs for ATX mounting hole sizes and plated area allowance.
13



i
i
i
i
i
ATX Chassis Mounting Holes
NVRAM SOURCING
Select VSTDBY or battery
as available.
of board for cable connection.
ATX Chassis Cable Header
Place in lower-left hand corner
Local Reset Switch
Local Power Switch
ii
CLOCK EQUALIZATION
PCI and PMC specifications.
Select CLKOFF to select external
TEST CLOCK INPUT
WBCLK less 2.5 inches per
Route indicated clocks to match
50ohm clock source.
i
Default: 5V
Select 3.3V or 5V VIO option.
PCI VIO SELECT
i
i
PRIMARY IDE
SECONDARY IDE
i
Keep all traces extremely short.
32kHz Oscillator
Route no traces through that area.
i
i
i
i
Floppy connector
Parallel Port
Right-angle PCB mount
PS/2 Keyboard
PS/2 Mouse
i
i
Serial Port #2
Serial Port #1
i
i
Next-closest to PMC.
PCI Slot #2
IDSEL AD14
PCI Slot #1
IDSEL AD13
Closest to PMC.
i
i
PCI Slot #4
IDSEL AD16
Furthest from PMC.
PCI Slot #3
IDSEL AD15
Third from PMC.
i
Place in visible area.
Diagnostic LEDs
