General Description
The MAX5960L evaluation kit (EV kit) is a fully assem-
bled and tested surface-mount quad hot-plug controller
printed-circuit board (PCB) with four PCI Express®hot-
plug slots. The circuit uses a MAX5960L IC in an 80-pin
TQFP package. The EV kit provides independent power
control for the 12V, 3.3V, and 3.3V auxiliary outputs at
four PCI Express x16 connectors. The EV kit demon-
strates the MAX5960L IC’s inrush current control, out-
put overcurrent/short-circuit protection, and input
undervoltage monitoring features.
The MAX5960L IC controls two separate external
n-channel MOSFETs for the 12V and 3.3V outputs of
each channel, respectively. Additionally, the MAX5960L
has internal MOSFETs that control the 3.3V auxiliary
outputs of channels A, B, C, and D. Switches are pro-
vided to independently enable/disable each channels’
main (12V, 3.3V) and auxiliary supply (3.3V).
The MAX5960L EV kit can be reconfigured for evaluat-
ing a x1, x4, or x8 PCI Express quad hot-plug design.
Alternatively, the EV kit can also be used to demon-
strate the MAX5960L hot-plug features without using
the PCI Express x16 connectors.
The EV kit includes three MAX7313 I/O expanders that
enable communication through an SMBus™ interface for
the MAX5960L signals and some of the PCI Express
channel signals. A CMAXQUSB interface board can be
used to enable PC communication through the SMBus
interface. Simple Windows®98SE/2000/XP-compatible
software is provided to access each MAX7313 I/O
expander register at the bit level. The MAX5960L EV kit
can also be used in local control, without any software.
Order the MAX5960LEVCMAXQU for a complete PC-
based evaluation of the MAX5960L. Order the
MAX5960LEVKIT if you already have a CMAXQUSB
interface board or do not require PC-based evaluation
of the MAX5960L.
PCI Express is a registered trademark of PCI-SIG Corp.
SMBus is a trademark of Intel Corp.
Windows is a registered trademark of Microsoft Corp.
Features
♦Demonstrates PCI Express x16 Quad Hot-Plug
Design
♦Independent Output Controls for Each Channel
12V and Up to 5.5A (Adjustable)
3.3V and Up to 3.3A (Adjustable)
3.3VAUX and Up to 0.550A
♦Evaluates Hot-Plugging PCI Express x1, x4, x8,
or x16 Line Cards
♦Demonstrates Input Inrush Current Control
♦Demonstrates Output Overcurrent/Short-Circuit
Protection
♦Undervoltage Lockout Protection for 12V, 3.3V,
and 3.3V Auxiliary Supplies
♦Configurable Power-On Reset (POR)
♦Independent On/Off Controls for Each Channel’s
12V/3.3V Main and 3.3V Aux Power
♦Latched Output (MAX5960L) after Fault
Conditions; also Evaluates MAX5959A,
MAX5960A Autoretry
♦Input/Output Interface Using MAX7313 I/O
Expanders (SMBus Interface) or Local Control
♦Can Be Controlled Locally Without Software
♦Windows 98SE/2000/XP-Compatible Software
♦Fully Assembled and Tested
Ordering Information
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
________________________________________________________________
Maxim Integrated Products
1
PART TYPE
MAX5960LEVKIT+ EV Kit
MAX5960LEVCMAXQU+ EV System
19-1009; Rev 0; 10/07
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Note: The MAX5960L EV kit software can be downloaded from
the Maxim website at www.maxim-ic.com/evkitsoftware.
However, the CMAXQUSB interface board is required to inter-
face the EV kit to a computer when using the software.
+
Denotes lead-free and RoHS-compliant.
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
2 _______________________________________________________________________________________
PART QTY DESCRIPTION
MAX5960LEVKIT+ 1 MAX5960L evaluation kit
CMAXQUSB+ 1 SMBus interface board
DESIGNATION QTY DESCRIPTION
C1, C3, C40,
C41, C42 5
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K
C2, C4, C11,
C14, C17, C20,
C24, C25,
C28, C30
0Not installed, ceramic capacitors
(0805)
C5, C10, C15,
C16, C21, C22,
C23, C26, C27,
C31–C34
13
1µF ±10%, 16V X7R ceramic
capacitors (0805)
Murata GRM21BR71C105K
C12, C18, C29 3
10µF ±20%, 25V X7R ceramic
capacitors (1812)
TDK 4532X7R1E106M
C13 1
1500µF, 16V electrolytic capacitor
(12.5mm x 13.5mm case)
Panasonic EEVFK1C152Q
C19 1
3300µF, 6.3V, low-Z electrolytic
capacitor
(12.5mm x 13.5mm case)
SANYO 6CE3300KX
C35 1
100µF, 6.3V, low-Z electrolytic
capacitor (6.3mm x 6.0mm case)
SANYO 6CE100KX
D1 1 1A, 40V Schottky diode (SOD-123)
Diodes Inc. 1N5819HW-F
D2–D14, D17,
D18, D21 16 Green surface-mount LEDs (1206)
D15, D16, D19,
D20 4 Yellow surface-mount LEDs (1206)
J1–J4 4 PCI Express x16 connectors
Molex 87715-9305
J5–J8 4 8-pin headers
J9 1 2 x 10 right-angle female
receptacle
DESIGNATION QTY DESCRIPTION
JU 1–JU 4, JU 9,
JU 10, JU 15, JU 16 8 2-pin headers
JU5–JU8,
JU11–JU14 8 3-pin headers
N1–N8 8
20V, 13.4A n-channel MOSFETs
(8-pin SO)
Vishay Si7448DP-T1-E3
R1–R6,
R11–R16, R73,
R76, R82, R83,
R84, R90, R93,
R99–R104
25 10kΩ ±5% resistors (0603)
R7–R10, R17,
R18 0 Not installed, resistors (0603)
R30, R36, R45,
R50 41kΩ ±5% resistors (1206)
R31, R35, R38,
R42, R46, R49,
R52, R55
0 Not installed, resistors (0805)
R32, R34, R47,
R48 4
0.008Ω ±1%, 0.5W sense
resistors (2010)
Vishay WSL20108L000FEA or
IRC LRC-LRF2010LF-01-R008-G
R33 1 750Ω ±1% resistor (1210)
R37, R41, R43,
R44, R51, R56,
R57, R58, R74,
R75, R80, R81,
R91, R92, R97,
R98
16 150Ω ±5% resistors (0603)
R39, R40, R53,
R54 4
0.005Ω ±1%, 0.5W sense
resistors (2010)
Vishay WSL20105L000FEA
R70, R71, R78,
R79, R88, R89,
R95, R96
8 51kΩ ±5% resistors (0603)
R72, R77, R94,
R111 43.3kΩ ±5% resistors (0603)
SW1–SW4 4 SPST momentary-contact switches
SW5–SW12 8 SPDT slide switches
Component Lists
MAX5960L EV System
MAX5960L EV Kit
MAX5960L EV Kit (continued)
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
_______________________________________________________________________________________ 3
Quick Start
(Hardware Only)
Required equipment:
• One each of the following DC power supplies:
12V, 25A
3.3V, 20A
• Three voltmeters
The 3.3V power supply can be used to power the main
3.3V and 3.3VAUX inputs.
The MAX5960L EV kit is fully assembled and tested.
Follow these steps to verify board operation. Do not turn
on the power supply until all connections are completed.
Note the banana leads connecting the 12V and 3.3V
power supply to the EV kit must be short (< 12in long)
and rated for at least 25A.
SUPPLIER PHONE WEBSITE
Diodes Inc. 805-446-4800 www.diodes.com
IRC 361-992-7900 www.irctt.com
Murata 770-436-1300 www.murata.com
Panasonic 714-373-7366 www.panasonic.com
SANYO Electronic Device 619-661-6835 www.sanyodevice.com
TDK 847-803-6100 www.component.tdk.com
Vishay — www.vishay.com
Component Suppliers
Note: Indicate that you are using the MAX5959A/MAX5959L/MAX5960A/MAX5960L when contacting these component suppliers.
FILE DESCRIPTION
INSTALL.EXE Installs the EV kit files on your computer
MAX5960L.EXE Application program
HELPFILE.HTM MAX5960L EV kit help file
FTD2XX.INF USB device driver file
TROUBLESHOOTING_USB.PDF USB driver installation help file
UNINST.INI Uninstalls the EV kit software
MAX5960L EV Kit Files
DESIGNATION
QTY
DESCRIPTION
TP3, TP5, TP7, TP8,
TP20, TP22, TP25,
TP26, TP28, TP30,
TP32, TP33, TP34,
TP37, TP38, TP40,
TP43, TP44, TP45,
OUT1–OUT4
23
PC test points, red
TP 11–TP 18, TP 23,
TP 29, TP 41, TP 46,
TP 47, TP 48,
TP 53, TP 54
16
PC test points, black
TP 21, TP 24, TP 27,
TP 31, TP 35, TP 36,
TP 39, TP 42,
TP 50, TP 51
10
PC test points, miniature, red
DESIGNATION
QTY
DESCRIPTION
U1 1
Quad PCI Express hot-swap
controller (80-pin TQFP 12mm x
12mm x 1mm)
Maxim MAX5960LECS+
U2, U3, U4 3
Maxim 16-port I/O expanders
(24-pin thin QFN, 4mm x 4mm)
MAX7313ATG+
VIN1, VIN2,
VIN3, GND, GND
5 Uninsulated banana jacks
—
16
Shunts (JU1–JU16)
—
10
Rubber bumpers
— 1 PCB: MAX5960L Evaluation Kit+
MAX5960L EV Kit (continued)
MAX5960L Hardware Only Configuration
1) Verify that shunts are installed on jumpers JU1,
JU2, JU3, and JU4 (PRES-DET_).
2) Verify that shunts are installed on pins 1 and 2 of
jumpers JU5, JU6, JU7, JU8, JU11, JU12, JU13,
and JU14 (local switch control).
3) Verify that a shunt is not installed on jumpers JU9,
JU10, JU15, and JU16 (MRL_).
4) Utilizing short 25A-rated banana leads (< 12in
long) connect the 12V DC power supply to the
VIN1 banana jack. Utilizing short 25A-rated banana
leads (< 12in long) connect the supply ground to
the GND banana jack.
5) Utilizing short 25A-rated banana leads (< 12in
long) connect the 3.3V DC power supply to the
VIN2 banana jack. Utilizing short 25A-rated banana
leads (< 12in long) connect the supply ground to
the GND banana jack.
6) Connect the 3.3V DC power supply to the VIN3
banana jack with a short banana lead.
7) Connect a voltmeter to the 12VA pad and GND.
Connect a voltmeter to the 3.3VA pad and GND.
Connect a voltmeter to the 3.3VAUXA pad and GND.
8) Set switches SW5, SW7, SW9, SW11 (ON_), and
SW6, SW8, SW10, SW12 (AUXON_) to the OFF
position.
9) Turn on both power supplies in any sequence.
10) Set switches SW5 (ONA) and SW6 (AUXONA) to
the ON position.
11) Verify that the voltage at channel A pad is as
shown below:
12VA = 12V
3.3VA = 3.3V
3.3VAUXA = 3.3V
12) Sliding switches SW5 and SW6 to the OFF position
will disable the channel A main or auxiliary outputs
on the MAX5960L EV kit.
13) For evaluating channels B, C, and D, use analo-
gous actions on steps 10 through 12 above for the
respective channel switch setting and output volt-
age reading. See the
Jumper and Switch Selection
section for more information on configuring the
respective channel.
14) Test points are provided to observe the MOSFET’s
gate voltage respectively with an oscilloscope.
Software and Hardware Quick Start
The MAX5960L EV kit is fully assembled and tested.
Follow these steps to verify board operation. Do not
turn on the power supplies until all connections are
completed.
Required Equipment
• One each of the following DC power supplies:
12V, 25A
3.3V, 20A (used to power the main 3.3V and
3.3VAUX inputs)
• Maxim MAX5960L EV kit and CMAXQUSB interface
board (USB cable included)
• Windows 98SE/2000/XP computer with a spare USB
port
• Three voltmeters for confirming output voltages
Note: In the following sections, software-related items are
identified by bolding. Text in bold refers to items directly
from the EV kit software. Text in bold and underlined
refers to items from the Windows operating system.
MAX5960L Software and Hardware Configuration
1) Visit www.maxim-ic.com/evkitsoftware to download
the latest version of the EV kit software,
5960LRxx.ZIP. Save the EV kit software to a tempo-
rary folder and uncompress the ZIP file.
2) Install the EV kit software on your computer by run-
ning the INSTALL.EXE program inside the temporary
folder. The program files are copied and icons are
created in the Windows Start | Programs menu.
3) Verify that no shunts are installed on jumpers JU1,
JU2, JU3, and JU4 (PRES-DET_).
4) Verify that shunts are installed on pins 2 and 3 of
jumpers JU5, JU6, JU7, JU8, JU11, JU12, JU13,
and JU14 (computer control).
5) Verify that a shunt is not installed on jumpers JU9,
JU10, JU15, and JU16 (MRL_).
6) Utilizing short 25A-rated banana leads (< 12in
long) connect the 12V DC power supply to the
VIN1 banana jack. Utilizing short 25A-rated banana
leads (< 12in long) connect the supply ground to
the GND banana jack.
7) Utilizing short 25A-rated banana leads (< 12in
long) connect the 3.3V DC power supply to the
VIN2 banana jack. Utilizing short 25A-rated banana
leads (< 12in long) connect the supply ground to
the GND banana jack.
8) Connect the 3.3V DC power supply to the VIN3
banana jack with a short banana lead. Do not turn
on the power supplies.
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
4 _______________________________________________________________________________________
9) Connect a voltmeter to the 12VA pad and GND.
Connect a voltmeter to the 3.3VA pad and GND.
Connect a voltmeter to the 3.3VAUXA pad and GND.
10) Connect the CMAXQUSB interface board to the
MAX5960L EV kit’s J9 connector.
11) Set both CMAXQUSB interface board SW1 switch-
es to enable. These provide pullup resistors for the
SDA and SCL 2-wire bus signals.
12) Turn on the 12V and 3.3V power supplies for the
EV kit. The CMAXQUSB interface board is powered
through the computer’s USB port.
13) Connect the USB cable from the PC to the CMAXQUSB
board. A Building Driver Database window should
pop up in addition to a New Hardware Found
message if this is the first time the EV kit board is
connected to the PC. If you do not see a window
that is similar to the one described above after 30s,
try removing the USB cable from the CMAXQUSB
interface board and reconnect it. Administrator
privileges are required to install the USB device
driver on Windows 2000 and XP. Refer to the docu-
ment TROUBLESHOOTING_USB.PDF included
with the software if you have any problems during
this step.
14) Follow the directions of the Add New Hardware
Wizard to install the USB device driver. Choose the
Search for the best driver for your device option.
Specify the location of the device driver to be
C:\Program Files\MAX5960L (default installation
directory) using the Browse button.
15) Start the MAX5960L program by opening its icon in
the Start | Programs menu.
16) The software will detect the CMAXQUSB interface
board, the SMBus address of ICs U2, U3, U4, and
will also be updated on the status screen. The soft-
ware is then ready for changes in the command
section.
17) Install a shunt on jumper JU3 (PRES-DETA) or
insert a PCI Express card into channel A PCI
Express connector J1.
18) To evaluate channels B, C, and D, use analogous
actions on step 17 above for the respective chan-
nel. See the
Jumper and Switch Selection
section
for more information on configuring each channel.
See the
Detailed Description of Software
section for
more information on the software GUI features. See the
MAX7313 Input/Output Expanders and SMBus
Interface
section for configuring the input/output
expander, using the CMAXQUSB interface board.
Detailed Description
The MAX5960L EV kit demonstrates a PCI Express x16
quad hot-plug circuit design. Four PCI Express x16 chan-
nels (A, B, C, and D) are provided to evaluate PCI Express
x16 line cards. The EV kit uses a latching MAX5960L
hot-plug controller in an 80-pin TQFP package to control
all four channels’ output power and monitor for faults.
The MAX5960L IC controls each channel’s output
power independently. External n-channel MOSFETs are
used to control power to the 12V and 3.3V outputs of
each channel. Current-sensing resistors R32, R47, R34,
and R48 are used for the 12V, and resistors R39, R53,
R40, and R54 for the 3.3V outputs of the respective
channel. Internal MOSFETs on the MAX5960L control
the 3.3V auxiliary outputs of each channel.
If an overcurrent fault persists on either channel, the
MAX5960L will shut down the respective channel. The
fault is reported at the respective channels’ open-drain
power-good pin (PWRGD_) and fault pin (FAULT_). The
MAX5960L power-on reset (POR) is configured for
160ms; however, the POR can be reconfigured after
installing resistor R18.
Slide switches are provided to enable/disable each
channel’s main output and auxiliary output indepen-
dently when the SMBus control is not used. Jumpers
JU1–JU4 can be used to provide a presence-detect
function for the respective channel if PCI Express cards
are not used. Momentary pushbutton switches
SW1–SW4 are provided to demonstrate the MAX5960L
debounced logic gate outputs.
The MAX5960L EV kit features green LEDs connected
to each channel’s 12V, 3.3V, and 3.3V auxiliary output
that indicate if the respective output is currently pow-
ered. Red test points for the 12V and 3.3V outputs, vari-
ous PCI Express signals, and other circuit signals such
as the gate drive of each MOSFET have been provided
for probing on the EV kit board. All the EV kit’s black
test points are GND points.
The EV kit also features PCB pads for installing external
resistors and capacitors near each MOSFET gate termi-
nal to increase the MOSFET’s gate-turn-on time.
Surface-mount 0805 case-size components can be
installed at these locations. See Figure 4 for each of the
MOSFET’s gate R and C designators.
The EV kit can be reconfigured for evaluating a x1, x4, or
x8 PCI Express quad hot-plug design by replacing the
appropriate current-sense resistor, R32, R34, R47, or
R48. Consult the appropriate
PCI Express
specification
in the MAX5960L IC data sheet for selecting other
designs. PCB pads are provided to demonstrate the
MAX5960L hot-plug features without using the PCI
Express x16 connectors.
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
_______________________________________________________________________________________ 5
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
6 _______________________________________________________________________________________
For evaluating external DC loads, the cables connect-
ing the 12V and 3.3V outputs to the external DC load
must be rated for at least 10A and be shorter than 12in.
Additionally, all current-sense resistors are configured
for the maximum allowable output current on the 12V
and 3.3V outputs. These resistors should be reconfig-
ured only for lower output currents.
The MAX5960L EV kit features three MAX7313 16-port
I/O expanders (U2, U3, U4) and PCB pads for interfac-
ing to a user’s SMBus system. Resistors configure each
MAX7313 to a fixed SMBus serial address. The
address of U2 is 0x40, U3 is 0x42, and U4 is 0x44. The
MAX7313 can also be used to enable/disable each
channel’s main output and auxiliary output indepen-
dently. See the
MAX7313 Input/Output Expanders and
SMBus Interface
section for more details.
Jumper and Switch Selection
The jumper and switch selections in the following tables
display the functions provided by the MAX5960L EV kit.
Presence-Detect Channels A, B, C, and D
The MAX5960L EV kit features four jumpers that can
simulate a PCI Express x16 card being plugged into a
connector. Jumpers JU1, JU2, JU3, and/or JU4 are
used to provide a presence-detect function for the
respective channel. An external load (resistive and
capacitive) must be connected to the channel’s output
PCB pads simulating a real PCI Express card. Table 1
lists the various jumper options.
Channel A Enable/Disable Switches
The MAX5960L EV kit features two switches to
enable/disable the 12V/3.3V main and 3.3V auxiliary
channel A outputs. The switches can also be used to
reset a channel that has latched off after a fault has
occurred. Table 2 lists the various switch options.
Channel B Enable/Disable Switches
The MAX5960L EV kit features two switches to
enable/disable the 12V/3.3V main and 3.3V auxiliary
channel B outputs. The switches can also be used to
reset a channel that has latched off after a fault has
occurred. Table 3 lists the various switch options.
JUMPER SHUNT MAX5960L PIN CONNECTION EV KIT OPERATION SIMULATED
Installed PRES-DETA pin pulled low PCI Express card inserted in channel A
JU3 None* PRES-DETA pin pulled high No PCI Express card in channel A
Installed PRES-DETB pin pulled Low PCI Express card inserted in channel B
JU4 None* PRES-DETB pin pulled high No PCI Express card in channel B
Installed PRES-DETC pin pulled low PCI Express card inserted in channel C
JU2 None* PRES-DETC pin pulled high No PCI Express card in channel C
Installed PRES-DETD pin pulled low PCI Express card inserted in channel D
JU1 None* PRES-DETD pin pulled high No PCI Express card in channel D
*
When using a real PCI Express card, these jumper shunts must be removed so that the card has control of the presence detection.
Table 1. Channel A, B, C, and D Presence-Detection Functions
SWITCH SWITCH STATE MAX5960L PIN CONNECTION MAX5960L OPERATION
ON ONA pin pulled high Enable channel A main outputs
SW5 OFF ONA pin pulled low Disable channel A main outputs
ON AUXONA pin pulled high Enable channel A 3.3V auxiliary output
SW6 OFF AUXONA pin pulled low Disable channel A 3.3V auxiliary output
Table 2. Channel A Switch Functions
Channel C Enable/Disable Switches
The MAX5960L EV kit features two switches to
enable/disable the 12V/3.3V main and 3.3V auxiliary
channel C outputs. The switches can also be used to
reset a channel that has latched off after a fault has
occurred. Table 4 lists the various switch options.
Channel D Enable/Disable Switches
The MAX5960L EV kit features two switches to
enable/disable the 12V/3.3V main and 3.3V auxiliary
channel D outputs. The switches can also be used to
reset a channel that has latched off after a fault has
occurred. Table 5 lists the various switch options.
Control Methods, Other Configurations,
and I/O Expander
Fault Resetting
The MAX5960L EV kit features slide switches to reset a
latched fault at each channel. The switch resets the
respective EV kit channel and unlatches the fault when
toggled from ON to OFF. See Tables 2 through 5 for
resetting the respective channel. Refer to the
MAX5960L IC data sheet for additional functions of the
MAX5960L ON_ pins.
Fault Timeout and POR Periods
The MAX5960L fault timeout period is configured for
10ms and can be reconfigured to a new timeout period
by installing surface-mount resistor R17. The MAX5960L
POR timeout period is configured for 160ms; however, a
new POR timeout period can be reconfigured by
installing surface-mount resistor R18. Install a 0Ωresis-
tor at R18 to bypass the POR time period delay. Refer to
MAX5960L IC data sheet
Power-Good (PWRGD_)
sec-
tion for selecting the values of resistors R17 or R18.
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
_______________________________________________________________________________________ 7
SWITCH SWITCH STATE MAX5960L PIN CONNECTION MAX5960L OPERATION
ON ONB pin pulled high Enable channel B main outputs
SW7 OFF ONB pin pulled low Disable channel B main outputs
ON AUXONB pin pulled high Enable channel B 3.3V auxiliary output
SW8 OFF AUXONB pin pulled low Disable channel B 3.3V auxiliary output
Table 3. Channel B Switch Functions
SWITCH SWITCH STATE MAX5960L PIN CONNECTION MAX5960L OPERATION
ON ONC pin pulled high Enable channel C main outputs
SW9 OFF ONC pin pulled low Disable channel C main outputs
ON AUXONC pin pulled high Enable channel C 3.3V auxiliary output
SW10 OFF AUXONC pin pulled low Disable channel C 3.3V auxiliary output
Table 4. Channel C Switch Functions
SWITCH SWITCH STATE MAX5960L PIN CONNECTION MAX5960L OPERATION
ON OND pin pulled high Enable channel D main outputs
SW11 OFF OND pin pulled low Disable channel D main outputs
ON AUXOND pin pulled high Enable channel D 3.3V auxiliary output
SW12 OFF AUXOND pin pulled low Disable channel D 3.3V auxiliary output
Table 5. Channel D Switch Functions
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
Forced ON Inputs
Either channel PCI Express slot can be forced to turn
on regardless of the MAX5960L logic status inputs. To
force channel A on, install surface-mount resistor R9 or
install the respective channel’s resistor. Typical values
are less than 1kΩ. Additionally, the MAX5960L EV kit
software can be used to force a channel on without
installing the resistor. See the
Software Startup
section
for more information.
Current Limiting
The MAX5960L EV kit is configured for PCI Express x16
current limits. The EV kit can also evaluate other cur-
rent-limit configurations for the 12V and 3.3V main out-
puts of each channel. Resistors R32, R47, R34, and
R48 set the 12V current-limit for channels A, B, C, and
D, respectively. Resistors R39, R53, R40, and R54 set
the 3.3V current limit for channels A, B, C, and D,
respectively. These resistors should be reconfigured
only for lower output currents. Refer to the MAX5960L
IC data sheet for information on selecting other current-
limit resistors.
The 3.3V auxiliary current limit is fixed at 700mA (typ)
and is not reconfigurable. However, a MAX5959L can
be installed to evaluate an auxiliary current limit of
470mA (typ) with the EV kit.
Evaluating Other Quad PCI Express
Hot-Plug Controllers
The MAX5960L EV kit can be used to evaluate the
MAX5959A, MAX5959L, or MAX5960A. Replace U1
with the desired Maxim IC that can be ordered through
the factory.
MAX7313 Input/Output Expanders and
SMBus Interface
The MAX5960L EV kit features three MAX7313 I/O
expanders (U2, U3, U4) and PCB pads for connecting to
an SMBus system (SDA and SCL signals). The I/O
expander interfaces with the PRES-DET_, FAULT_, ON_,
OUT_, PWRGD_, and FON_ signals of the MAX5960L for
each channel. Headers J5–J8 (8 pins) are provided to
enable easy access to the respective channel’s signals
through a ribbon cable or scope probe. Green and yel-
low LEDs (D14–D21) are also provided for user applica-
tions such as status indication. Jumpers JU9, JU10,
JU15, and JU16 are provided to mimic a PCI Express
mechanical retention locking (MRL) signal for the
respective channel. Resistors configure each MAX7313
to a fixed SMBus serial address, where U2 is 0x40, U3 is
0x42, and U4 is 0x44.
If the MAX7313 I/O expander is used to control the ON_
signals and read back various other MAX5960L signals
of each channel, jumpers JU5–JU14 must be properly
configured or the I/O expanders may be destroyed
when switching logic states. See Table 6 for configur-
ing jumpers JU5–JU14. Pads are provided on the EV
kit’s PCB for interfacing with a user’s system SMBus
VDD, SDA, SCL, and GND signals.
If a user’s SMBus system is not available, a Windows-
based computer can be interfaced with the EV kit by
connecting the CMAXQUSB interface board to connec-
tor J9. The interface board enables the computer to inter-
face with the EV kit’s SMBus signals. The SMBus
interface board and software provides the user with an
option of using a Windows-based GUI interface or “bit-
banging” signals to and from the MAX7313 I/O
expander’s various registers to control the MAX5960L IC.
MAX5960L Evaluation Kit/
Evaluation System
8 _______________________________________________________________________________________
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
_______________________________________________________________________________________ 9
JUMPER SHUNT LOCATION MAX5960L PIN CONNECTION EV KIT OPERATION
JU5 1 and 2 AUXONA controlled by SW6 Local switch control
JU6 1 and 2 ONA controlled by SW5 Local switch control
JU7 1 and 2 ONB controlled by SW7 Local switch control
JU8 1 and 2 AUXONB controlled by SW8 Local switch control
JU11 1 and 2 AUXONC controlled by SW9 Local switch control
JU12 1 and 2 ONC controlled by SW10 Local switch control
JU13 1 and 2 OND controlled by SW11 Local switch control
JU14 1 and 2 AUXOND controlled by SW12 Local switch control
JU5 2 and 3 AUXONA controlled by U2, MAX7313 with SMBus SMBus or computer control
JU6 2 and 3 ONA controlled by U2, MAX7313 with SMBus SMBus or computer control
JU7 2 and 3 ONB controlled by U2, MAX7313 with SMBus SMBus or computer control
JU8 2 and 3 AUXONB controlled by U2, MAX7313 with SMBus SMBus or computer control
JU11 2 and 3 AUXONC controlled by U3, MAX7313 with SMBus SMBus or computer control
JU12 2 and 3 ONC controlled by U3, MAX7313 with SMBus SMBus or computer control
JU13 2 and 3 OND controlled by U3, MAX7313 with SMBus SMBus or computer control
JU14 2 and 3 AUXOND controlled by U3, MAX7313 with SMBus SMBus or computer control
Table 6. MAX5960L Channels A, B, C, and D ON_ Signals Configuration
Figure 1. The MAX5960L Evaluation Software Main Window for Reading Current EV Kit Status and Sending Commands
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
10 ______________________________________________________________________________________
MAX7313
PORT I/O
PORT P7
(BIT D7)
PORT P6
(BIT D6)
PORT P5
(BIT D5)
PORT P4
(BIT D4)
PORT P3
(BIT D3)
PORT P2
(BIT D2)
PORT P1
(BIT D1)
PORT P0
(BIT D0)
PORT
CONFIG OUTPUT OUTPUT INPUT INPUT OUTPUT OUTPUT INPUT INPUT
EV KIT
FUNCTION
YELLOW
LED GREEN LED PRES-DET FAULT AUXON ON OUT MRL
Table 7. MAX7313 I/O Port Configuration/Function for U2 and U3
MAX7313
PORT I/O
PORT P7
(BIT D7)
PORT P6
(BIT D6)
PORT P5
(BIT D5)
PORT P4
(BIT D4)
PORT P3
(BIT D3)
PORT P2
(BIT D2)
PORT P1
(BIT D1)
PORT P0
(BIT D0)
PORT
CONFIG OUTPUT OUTPUT OUTPUT OUTPUT INPUT INPUT INPUT INPUT
EV KIT
FUNCTION FOND FONC FONB FONA PWRGDD PWRGDC PWRGDB PWRGDA
Table 8. MAX7313 I/O Port Configuration/Function for U4
Detailed Description
of Software
A mouse or the keyboard’s Tab key is used to navigate
various items on the Main Window. Most of the main
window’s available functions and a few more can be
evaluated by using the pulldown menu. The software
features a demo mode that is available using the
View|Demo Mode pulldown menu.
Software Startup
Upon starting the program, the MAX5960L EV kit soft-
ware automatically detects U2, U3, and U4 addresses
and configures their I/O. See Tables 7 and 8 for U2, U3,
and U4 configuration by the software. The MAX5960L EV
kit’s various status signals are then updated by the pro-
gram approximately every 500ms. Use the checkboxes
to enable/disable various EV kit functions and then
select the Execute Command button to send the com-
mands to the respective I/O expander and/or U1.
Deselecting a checkbox disables the command.
To force a respective channel ON, select the respective
channel’s latching FORCE ON button. To turn OFF a
forced ON channel, select the button again. When a
respective channel is forced ON, that particular chan-
nel’s controls are disabled until force ON is turned off.
The software’s Status area provides information on the
various MAX5960L and PCI Express system signal’s
condition. Each MAX7313 I/O expander SMBus
address is provided in hexadecimal and decimal for-
mat, respectively. The left bottom status bar of the main
window provides the CMAXQUSB interface board com-
munication status. The right bottom status bar provides
the current program status and SMBus communication
status with respect to the respective I/O expander.
The MAX5960L EV kit software configures the CMAXQUSB
interface board’s SMBus communication speed to
400kHz by default. The speed can be reduced to
100kHz if required, by selecting the pulldown menu’s
View|2-Wire Speed|100kHz selection. This may be
required if slower SMBus or 2-wire devices are con-
nected to the bus on the EV kit.
General-Purpose 2-Wire Interface Utility
The general-purpose 2-wire interface utility can also be
used to communicate with the MAX7313 and thus con-
trol or read back signals from the MAX7313 and/or
MAX5960L. Use the View|Interface pulldown menu to
access the utility. The utility configures the SMBus inter-
face parameters such as start and stop bits, acknowl-
edgments, and clock timing. The 2-wire interface
screen allows you to send general-purpose SMBus
commands using the SMBusWriteByte and
SMBusReadByte. The interface utility only accepts
and outputs hexadecimal number format.
The Hunt for active listeners button scans the entire
2-wire address space, reporting each address that is
acknowledged. The SMBusWriteByte transmits the
device address, command, and 1 byte of data. The
SMBusReadByte transmits the device address, a com-
mand, and then retransmits the device address and
reads 1 byte of data.
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
______________________________________________________________________________________ 11
For information on the differences between a 2-wire and
an SMBus interface, read Application Note:
Comparing
the I2C Bus to the SMBus
at www.maxim-ic.com.
General Troubleshooting
Problem: Software reports it cannot find the inter-
face board.
• Is the interface board power LED lit?
• Is the USB communications cable connected?
• Has Windows plug-and-play detected the board?
Bring up Control Panel->System->Device
Manager, and look at what device nodes are indi-
cated for USB. If there is an “unknown device” node
attached to the USB, delete it—this forces plug-
and-play to try again.
Problem: Unable to find U2, U3, or U4 (MAX7313).
• Is power applied to the MAX5960L EV kit VIN2 and
VIN3 banana jacks? This is required for powering
U2, U3, and U4.
• Are the SCL and SDA signals pulled up to VDD?
The CMAXQUSB interface board dip switch SW1
enables the on-board resistors on the interface
board. There must be pullup resistors somewhere
for the SMBus SCL and SDA signals.
• If using jumper wires to connect, are the SCL and
SDA signals swapped? Is the ground return missing?
Figure 2. The 2-Wire Interface Window Provides Direct, Low-Level Access to the MAX5960L with the MAX7313 and SMBus 2-Wire
Interface
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
12 ______________________________________________________________________________________
Figure 3. MAX5960L EV Kit Schematic, Quad PCI Express Controller
N.C.
12GB
12SB-
12SB-
12SB+
VIN1
FAULTB
PWRGDB
3.3AUXOB
+3.3VAUX
PGND
+3.3VAUX
3.3GB
12GB
+3.3VAUX
+3.3VAUX
R4
10kΩ
R3
10kΩ
R11
10kΩ
R12
10kΩ
R2
10kΩ
R1
10kΩ
R9
OPEN
R10
OPEN
JU4
JU3
C1
0.1μF
C2
OPEN
R6
10kΩ
R5
10kΩ
TP5
TP3
SW1
31
SW2
JU1
JU2
R7
OPEN
R8
OPEN
ATTN2
ATTN1
31
3.3SB-
3.3SB+
+3.3V
12SB+
AUXONB
AUXONB
AUXOND
GND
FONC
ONB
ONB
OUT1
OUT1
OUT2
OUT2
OND
ONC
AUXOND
AUXONC
12SC-
12GC
3.3SC-
3.3GC
FAULTC
+3.3VAUX
PWRGDC
3.3AUXOC
TP11 TP12 TP13 TP14 TP15 TP16 TP17 TP18
3.3SC+
+3.3V
R13
10kΩ
R14
10kΩ
12SC+
VIN1
FOND
INPUT1
OUTPUT1
INPUT2
OUTPUT2
N.C.
FOND
PRES-DETD
PRES-DETD
PRES-DETC
AUXONC
ONC
12SC+
12SC-
OND
3.3SA+ 3.3SA+
+3.3V
12SA+
VIN1
12GA
12SA-
12GA
12SA-
FONB
FONB
PRES-DETB
PRES-DETB
3.3SD+ 3.3SD+
+3.3V
12SA+
AUXONA AUXONA
ONA ONA
TP7
SW3
31
SW4
31
TP8
INPUT3
OUT3
INPUT4
FONA
12GD
12SD-
3.3GD
3.3SD-
12SD+
VIN1
OUT4
OUT3
OUT4
INPUT3
OUTPUT3
INPUT4
OUTPUT4
FONA
3.3SD-
12SD+
3.3GD
12SD-
12GD
PRES-DETA
PRES-DETA
60
59
58
48
47
46
57
56
55
54
53
52
51
50
45
43
44
42
41
49
1
2
3
13
14
15
4
5
6
7
8
9
10
11
16
18
17
19
20
12
3.3SB+
3.3SB-
3.3GB
FAULTB
PWRGDB
3.3AUXOB
3.3AUXOB
3.3AUXIN
3.3AUXIN
3.3AUXIN
3.3AUXOA
3.3AUXOA
3.3AUXOA
3.3AUXOA
PWRGDA
FAULTA
+3.3VAUX
+3.3VAUX
+3.3VAUX
3.3GA
3.3SA-
PGND
PWRGDA
FAULTA
3.3GA
3.3SA-
N.C.
12GC
3.3SC+
3.3SC-
3.3GC
FAULTC
PWRGDC
3.3AUXOC
3.3AUXOC
3.3AUXOC
3.3AUXOD
+3.3VAUX
C3
0.1μF
C4
OPEN
R15
10kΩ
R17
OPEN
C5
1μF
R18
OPEN
R16
10kΩ
3.3AUXOD
PWRGDD
3.3AUXIN
3.3AUXIN
3.3AUXIN
3.3AUXOD
3.3AUXOD
PGND
PWRGDD
FAULTD
TIM
PORADJ
GND
12VIN
21 22 23 24 25 26 27 28 29 30 31 32 33 34
PGND
35 36 37 38 39 40 D1
VIN1
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
FONC
PRES-DETC
+3.3VAUX
FAULTD
U1
MAX5960L
ATTN3
ATTN4
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
______________________________________________________________________________________ 13
Figure 4. MAX5960L EV Kit Schematic, Quad PCI Express Hot Swap
3.3AUXOA
12VA
3
21
87
56
4
GND
12GA
TP22 TP23
VIN1
(12V)
GND
12SA-
12SA+
VIN1 VIN1
N1S
TP21
12VA
TP20
C13
1500μF
16V
C10
1μF
12VA
D2
R30
1kΩ
R31
OPEN
C11
OPEN
N1
R32
0.008Ω
1%
C12
10μF
R33
750Ω
TP27
R39
0.005Ω
1%
3.3VA
3
21
87
56
4
GND
3.3GA
+3.3V
3.3SA-
3.3SA+
+3.3V
N3S
3.3VA
TP26
C16
1μF
3.3VA
D4
R37
150Ω
R38
OPEN
C17
OPEN
N3
3.3VAUXA
3.3VAUXA
D6
GND C34
1μF
3.3VAUXA
TP33
R43
150kΩ
12VB
3
21
87
56
4
GND
12GB
12SB-
12SB+
VIN1
VIN1
N5S
TP35
12VB
TP34
C23
1μF
12VB
D8
R45
1kΩ
R46
OPEN
C24
OPEN
N5
R47
0.008Ω
1%
TP39
R53
0.005Ω
1%
3.3VB
3
21
87
56
4
GND
3.3GB
+3.3V
3.3SB
3.3SB+
+3.3V
N7S
3.3VB
TP38
C27
1μF
3.3VB
D10
R51
150Ω
R52
OPEN
C28
OPEN
N7
3.3AUXOB
3.3VAUXB
3.3VAUXB
D12
GND C32
1μF
3.3VAUXB
TP44
R57
150Ω
TP46 TP47 TP48
GND
VIN2 TP28
+3.3V
(3.3V)
C19
3300μF
6.3V
C18
10μF
TP29
VIN3 TP40
+3.3VAUX
C35
100μF
6.3V
C29
10μF
TP41
12VD
3
21
87
56
GND
TP42
12SD-
12SD+
VIN1
VIN1
N6S
3.3GD
12VD
TP37
C26
1μF
12VD
D9
R49
OPEN
C25
OPEN
N6
R48
0.008Ω
1%
R50
1kΩ
R54
0.005Ω
1%
3.3VD
3
21
87
56
4
GND
+3.3V
3.3SD-
3.3SD+
+3.3V
N8S
3.3VB
TP43
C31
1μF
3.3VD
D11
R56
150Ω
R55
OPEN
C30
OPEN
N8
3.3VAUXD
3.3VD
D13
GND
C33
1μF
3.3VAUXD
TP45
3.3VAUXOD
R58
150Ω
TP31
R40
0.005Ω
1%
3.3VC
3
21
87
56
4
GND
3.3GC
+3.3V
3.3SC-
3.3SC+
+3.3V
N4S
3.3VC
TP32
C21
1μF
3.3VC
D5
R41
150Ω
R42
OPEN
C20
OPEN
N4
TP36 412GD
12VC
3
21
87
56
4
GND
12SC-
12SC+
VIN1
VIN1
N2S
12GCTP24
12VC
TP25
C15
1μF
12VC
D3
R36
1kΩ
R35
OPEN
C14
OPEN
N2
R34
0.008Ω
1%
3.3VAUXC3.3AUXOC
3.3VC
D7
GND
C22
1μF
3.3VAUXC
TP30
R44
150Ω
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
14 ______________________________________________________________________________________
Figure 5. MAX5960L EV Kit Schematic, SMBus I/O Control
+3.3VAUX
D14 7 P6
P5
P4
P3
P2
P1
P0
AD2
+3.3VAUX
+3.3VAUX
+3.3VAUX
JU5
SW6
+3.3VAUX +3.3VAUX
SW5
JU6
+3.3VAUX
OUT1
P11
P12
P13
P14
P15
AD0
AUXONA
AUXONA
AUXONB
ONA
PRES-DETA
ONA
FAULTA
AD1
U2
INT/O16
V+
SDA SDA
SCL SCL
P7
GND
P8
P9
P10
8
9
10
11
12
24
23
22
21
20
19
13 14 15 16 17 18
65
JU10
MRLA
R73
10kΩ
R82
10kΩ
R102
10kΩ
R104
10kΩ
R103
10kΩ
R83
10kΩ
R84
10kΩ
R72
3.3kΩ
R77
3.3kΩ
R76
10kΩ
R70
51kΩ
R71
51kΩ
C40
0.1μF
43 21
1
1
3
3
2
JU8
JU7
JU9
MRLB
3
1
2
2
11
3
3
22
GREEN
YELLOW
D15
R79
51kΩ
R75
150Ω
R74
150Ω
MAX7313
P6
PWRGDD
FONA
FONB
P5
P4
P3
P2
P1
P0
654321
AD2
P11
P12
P13
P14
P15
AD0
13 14 15 16 17 18
AD1
V+
U4
INT/O16
SDA
SCL
24
23
22
21
20
19
SDA
SCL
P7
GND
P8
P9
P10
7
8
9
10
11
12
MAX7313
+3.3VAUX
PRES-DETB
FAULTB
+3.3VAUX
SW8
SW7
AUXONB
OUT2
1
3
2
ONB
3
1
2
+3.3VAUX
+3.3VAUX
+3.3VAUX
ONB
1
3
2
+3.3VAUX
+3.3VAUX
C42
0.1μF
+3.3VAUX
D16
GREEN
YELLOW
D17
R81
150Ω
R80
150Ω
+3.3VAUX
D18 7 P6
P5
P4
P3
P2
P1
P0
AD2
+3.3VAUX
+3.3VAUX
+3.3VAUX
JU11
SW10
+3.3VAUX +3.3VAUX
SW9
JU12
+3.3VAUX
OUT3
P11
P12
P13
P14
P15
AD0
AUXONC
AUXONC
AUXOND
ONC
PRES-DETC
ONC
FAULTC
AD1
U3
INT/O16
V+
SDA SDA
SCL SCL
P7
GND
P8
P9
P10
8
9
10
11
12
24
23
22
21
20
19
13 14 15 16 17 18
65
JU16
MRLC
R90
10kΩ
R100
10kΩ
R101
10kΩ
R111
3.3kΩ
R94
3.3kΩ
R93
10kΩ
R88
51kΩ
R89
51kΩ
C41
0.1μF
43 21
1
1
3
3
2
JU14
JU13
JU15
MRLD
3
1
2
2
11
3
3
22
GREEN
YELLOW
D19
R96
51kΩ
R95
51kΩ
R78
51kΩ
R92
150Ω
R91
150Ω
MAX7313
+3.3VAUX
PRES-DETD
FAULTD
+3.3VAUX
SW12
SW11
AUXOND
OUT4
1
3
2
OND
3
1
2
+3.3VAUX
+3.3VAUX
+3.3VAUX
OND
1
3
2
+3.3VAUX
+3.3VAUX
D20
GREEN
YELLOW
D21
R98
150Ω
R99
10kΩ
R97
150Ω
FONC
FOND
PWRGDC
PWRGDB
PWRGDA
A42
A41
A40
J9-1 J9-2
J9
FEMALE CONNECTOR 2 x 10
SDA
SCL
SUSPENDOUT
ALERTIN
J9-3 J9-4
J9-5 J9-6
J9-7 J9-8
J9-9 J9-10
J9-11
N.C.
N.C.
N.C.
N.C.
J9-12
J9-13 J9-14
J9-15 J9-16
J9-17 J9-18
J9-19 J9-20
VDD
VDD
TP51 TP53 TP54
SUSPENDOUT
SDA
SDA
SCL
SCL
GND
TP50
ALERTIN
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
______________________________________________________________________________________ 15
Figure 6. MAX5960L EV Kit Schematic, PCI Express x16 Channels A and B
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
B37
B38
B39
B40
B41 A41
A40
A39
A38
A37
A36
A35
A34
A33
A32
A31
A30
A29
A28
A27
A26
A25
A24
A23
A22
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3 N5S
N7S
PERST#_J2
N5S
N7S
PRES-DETD
A2
A1
3.3AUXOB
PETP6
GND
GND
PETN5
PETP5
GND
GND
PETN4
PETP4
GND
PRSNT2#
RSVD
GND
PETN3
PETP3
GND
GND
PETN2
PETP2
GND
GND
PETN1
PETP1
GND
PRSNT2#
GND
PETN0
PETP0
GND
RSVD
WAKE#
3.3VAUX
JTAG1
+3.3V
GND
SMDAT
SMCLK
GND
+12V
+12V
+12V
GND
PERN5
PERP5
GND
GND
PERN4
PERP4
GND
RSVD
RSVD
GND
PERN3
PERP3
GND
GND
PERN2
PERP2
GND
GND
PERN1
PERP1
GND
RSVD
GND
PERN0
PERP0
GND
REFCLK-
REFCLK+
GND
PERST#
+3.3V
+3.3V
JTAG5
JTAG4
JTAG3
JTAG2
GND
+12V
+12V
PRSNT1#
J2-A
(CHANNEL B)
J5-1
J5
(CHANNEL A)
PERST#_J1
PRES-DETA
FAULTA
PWRGDA
J5-2
J5-3 ONA
AUXONA
OUT1
J5-4
J5-5
J5-6
J5-7
J5-8
J6-1
J6
(CHANNEL B)
PERST#_J2
PRES-DETB
FAULTB
PWRGB
J6-2
J6-3 ONB
AUXONB
OUT2
J6-4
J6-5
J6-6
J6-7
J6-8
B42
B43
B44
B45
B46
B47
B48
B49
B50
B51
B52
B53
B54
B55
B56
B57
B58
B59
B60
B61
B62
B63
B64
B65
B66
B67
B68
B69
B70
B71
B72
B73
B74
B75
B76
B77
B78
B79
B80
B81
B82 A82
A81
A80
A79
A78
A77
A76
A75
A74
A73
A72
A71
A70
A69
A68
A67
A66
A65
A64
A63
A62
A61
A60
A59
A58
A57
A56
A55
A54
A53
A52
A51
A50
A49
A48
A47
A46
A45
A44
PRES-DETB
PRES-DETB
A43
A42
RSVD
J2-B
PRSNT2#
GND
PETN15
PETP15
GND
GND
PETN14
PETP14
GND
GND
PETN13
PETP13
GND
GND
PETN12
PETP12
GND
GND
PETN11
PETP11
GND
GND
PETN10
PETP10
GND
GND
PETN9
PETP9
GND
GND
PETN8
PETP8
GND
PRSNT2#
GND
PETN7
PETP7
GND
GND
PETN6
GND
PERN15
PERP15
GND
GND
PERN14
PERP14
GND
GND
PERN13
PERP13
GND
GND
PERN12
PERP12
GND
GND
PERN11
PERP11
GND
GND
PERN10
PERP10
GND
GND
PERN9
PERP9
GND
GND
PERN8
PERP8
GND
RSVD
GND
PERN7
PERP7
GND
GND
PERN6
PERP6
GND
PRES-DETB
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
B37
B38
B39
B40
B41 A41
A40
A39
A38
A37
A36
A35
A34
A33
A32
A31
A30
A29
A28
A27
A26
A25
A24
A23
A22
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3 N1S
N3S
PERST#_J1
N1S
N3S
PRES-DETA
A2
A1
3.3AUXOA
PETP6
GND
GND
PETN5
PETP5
GND
GND
PETN4
PETP4
GND
PRSNT2#
RSVD
GND
PETN3
PETP3
GND
GND
PETN2
PETP2
GND
GND
PETN1
PETP1
GND
PRSNT2#
GND
PETN0
PETP0
GND
RSVD
WAKE#
3.3VAUX
JTAG1
+3.3V
GND
SMDAT
SMCLK
GND
+12V
+12V
+12V
GND
PERN5
PERP5
GND
GND
PERN4
PERP4
GND
RSVD
RSVD
GND
PERN3
PERP3
GND
GND
PERN2
PERP2
GND
GND
PERN1
PERP1
GND
RSVD
GND
PERN0
PERP0
GND
REFCLK-
REFCLK+
GND
PERST#
+3.3V
+3.3V
JTAG5
JTAG4
JTAG3
JTAG2
GND
+12V
+12V
PRSNT1#
J1-A
(CHANNEL A)
B42
B43
B44
B45
B46
B47
B48
B49
B50
B51
B52
B53
B54
B55
B56
B57
B58
B59
B60
B61
B62
B63
B64
B65
B66
B67
B68
B69
B70
B71
B72
B73
B74
B75
B76
B77
B78
B79
B80
B81
B82 A82
A81
A80
A79
A78
A77
A76
A75
A74
A73
A72
A71
A70
A69
A68
A67
A66
A65
A64
A63
A62
A61
A60
A59
A58
A57
A56
A55
A54
A53
A52
A51
A50
A49
A48
A47
A46
A45
A44
PRES-DETA
PRES-DETA
A43
A42
RSVD
J1-B
PRSNT2#
GND
PETN15
PETP15
GND
GND
PETN14
PETP14
GND
GND
PETN13
PETP13
GND
GND
PETN12
PETP12
GND
GND
PETN11
PETP11
GND
GND
PETN10
PETP10
GND
GND
PETN9
PETP9
GND
GND
PETN8
PETP8
GND
PRSNT2#
GND
PETN7
PETP7
GND
GND
PETN6
GND
PERN15
PERP15
GND
GND
PERN14
PERP14
GND
GND
PERN13
PERP13
GND
GND
PERN12
PERP12
GND
GND
PERN11
PERP11
GND
GND
PERN10
PERP10
GND
GND
PERN9
PERP9
GND
GND
PERN8
PERP8
GND
RSVD
GND
PERN7
PERP7
GND
GND
PERN6
PERP6
GND
PRES-DETA
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
16 ______________________________________________________________________________________
Figure 7. MAX5960L EV Kit Schematic, PCI Express x16 Channels C and D
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
B37
B38
B39
B40
B41 A41
A40
A39
A38
A37
A36
A35
A34
A33
A32
A31
A30
A29
A28
A27
A26
A25
A24
A23
A22
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3 N6S
N8S
PERST#_J4
N6S
N8S
PRES-DETD
A2
A1
3.3AUXOD
PETP6
GND
GND
PETN5
PETP5
GND
GND
PETN4
PETP4
GND
PRSNT2#
RSVD
GND
PETN3
PETP3
GND
GND
PETN2
PETP2
GND
GND
PETN1
PETP1
GND
PRSNT2#
GND
PETN0
PETP0
GND
PCI-16EX PCI-16EX
PCI-16EX PCI-16EX
RSVD
WAKE#
3.3VAUX
JTAG1
+3.3V
GND
SMDAT
SMCLK
GND
+12V
+12V
+12V
GND
PERN5
PERP5
GND
GND
PERN4
PERP4
GND
RSVD
RSVD
GND
PERN3
PERP3
GND
GND
PERN2
PERP2
GND
GND
PERN1
PERP1
GND
RSVD
GND
PERN0
PERP0
GND
REFCLK-
REFCLK+
GND
PERST#
+3.3V
+3.3V
JTAG5
JTAG4
JTAG3
JTAG2
GND
+12V
+12V
PRSNT1#
J4-A
(CHANNEL D)
J7-1
J7
(CHANNEL C)
PERST#_J3
PRES-DETC
FAULTC
PWRGDC
J7-2
J7-3 ONC
AUXONC
OUT3
J7-4
J7-5
J7-6
J7-7
J7-8
J8-1
J8
(CHANNEL D)
PERST#_J4
FAULTD
PWRGDD
J8-2
J8-3 OND
AUXOND
OUT4
J8-4
J8-5
J8-6
J8-7
J8-8
B42
B43
B44
B45
B46
B47
B48
B49
B50
B51
B52
B53
B54
B55
B56
B57
B58
B59
B60
B61
B62
B63
B64
B65
B66
B67
B68
B69
B70
B71
B72
B73
B74
B75
B76
B77
B78
B79
B80
B81
B82 A82
A81
A80
A79
A78
A77
A76
A75
A74
A73
A72
A71
A70
A69
A68
A67
A66
A65
A64
A63
A62
A61
A60
A59
A58
A57
A56
A55
A54
A53
A52
A51
A50
A49
A48
A47
A46
A45
A44
A43
A42
RSVD
J4-B
PRSNT2#
GND
PETN15
PETP15
GND
GND
PETN14
PETP14
GND
GND
PETN13
PETP13
GND
GND
PETN12
PETP12
GND
GND
PETN11
PETP11
GND
GND
PETN10
PETP10
GND
GND
PETN9
PETP9
GND
GND
PETN8
PETP8
GND
PRSNT2#
GND
PETN7
PETP7
GND
GND
PETN6
GND
PERN15
PERP15
GND
GND
PERN14
PERP14
GND
GND
PERN13
PERP13
GND
GND
PERN12
PERP12
GND
GND
PERN11
PERP11
GND
GND
PERN10
PERP10
GND
GND
PERN9
PERP9
GND
GND
PERN8
PERP8
GND
RSVD
GND
PERN7
PERP7
GND
GND
PERN6
PERP6
GND
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
B37
B38
B39
B40
B41 A41
A40
A39
A38
A37
A36
A35
A34
A33
A32
A31
A30
A29
A28
A27
A26
A25
A24
A23
A22
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3 N2S
N4S
PERST#_J3
N2S
N4S
PRES-DETC
A2
A1
3.3AUXOC
PETP6
GND
GND
PETN5
PETP5
GND
GND
PETN4
PETP4
GND
PRSNT2#
RSVD
GND
PETN3
PETP3
GND
GND
PETN2
PETP2
GND
GND
PETN1
PETP1
GND
PRSNT2#
GND
PETN0
PETP0
GND
RSVD
WAKE#
3.3VAUX
JTAG1
+3.3V
GND
SMDAT
SMCLK
GND
+12V
+12V
+12V
GND
PERN5
PERP5
GND
GND
PERN4
PERP4
GND
RSVD
RSVD
GND
PERN3
PERP3
GND
GND
PERN2
PERP2
GND
GND
PERN1
PERP1
GND
RSVD
GND
PERN0
PERP0
GND
REFCLK-
REFCLK+
GND
PERST#
+3.3V
+3.3V
JTAG5
JTAG4
JTAG3
JTAG2
GND
+12V
+12V
PRSNT1#
J3-A
(CHANNEL C)
B42
B43
B44
B45
B46
B47
B48
B49
B50
B51
B52
B53
B54
B55
B56
B57
B58
B59
B60
B61
B62
B63
B64
B65
B66
B67
B68
B69
B70
B71
B72
B73
B74
B75
B76
B77
B78
B79
B80
B81
B82 A82
A81
A80
A79
A78
A77
A76
A75
A74
A73
A72
A71
A70
A69
A68
A67
A66
A65
A64
A63
A62
A61
A60
A59
A58
A57
A56
A55
A54
A53
A52
A51
A50
A49
A48
A47
A46
A45
A44
A43
A42
RSVD
J3-B
PRSNT2#
GND
PETN15
PETP15
GND
GND
PETN14
PETP14
GND
GND
PETN13
PETP13
GND
GND
PETN12
PETP12
GND
GND
PETN11
PETP11
GND
GND
PETN10
PETP10
GND
GND
PETN9
PETP9
GND
GND
PETN8
PETP8
GND
PRSNT2#
GND
PETN7
PETP7
GND
GND
PETN6
GND
PERN15
PERP15
GND
GND
PERN14
PERP14
GND
GND
PERN13
PERP13
GND
GND
PERN12
PERP12
GND
GND
PERN11
PERP11
GND
GND
PERN10
PERP10
GND
GND
PERN9
PERP9
GND
GND
PERN8
PERP8
GND
RSVD
GND
PERN7
PERP7
GND
GND
PERN6
PERP6
GND
PRES-DETD
PRES-DETD
PRES-DETD
PRES-DETD
PRES-DETC
PRES-DETC
PRES-DETC
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
______________________________________________________________________________________ 17
Figure 8. MAX5960L EV Kit Component Placement Guide—Component Side
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
18 ______________________________________________________________________________________
Figure 9. MAX5960L EV Kit PCB Layout—Component Side
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
______________________________________________________________________________________ 19
Figure 10. MAX5960L EV Kit PCB Layout—Inner Layer, Ground Plane Layer 2
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
20 ______________________________________________________________________________________
Figure 11. MAX5960L EV Kit PCB Layout—Inner Layer, Power Plane Layer 3
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
______________________________________________________________________________________ 21
Figure 12. MAX5960L EV Kit PCB Layout—Inner Layer, Ground Plane Layer 4
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
22 ______________________________________________________________________________________
Figure 13. MAX5960L EV Kit PCB Layout—Inner Layer, Signal Layer 5
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
______________________________________________________________________________________ 23
Figure 14. MAX5960L EV Kit PCB Layout—Solder Side
Evaluate: MAX5959A/MAX5959L/MAX5960A/MAX5960L
MAX5960L Evaluation Kit/
Evaluation System
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
24
____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products. Inc.
Janet Freed
Figure 15. MAX5960L EV Kit Component Placement Guide—Solder Side
