MAX5960A [MAXIM]
Demonstrates PCI Express x16 Quad Hot-Plug Design;
| 型号： | MAX5960A |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Demonstrates PCI Express x16 Quad Hot-Plug Design PC |
| 文件： | 总24页 (文件大小：1177K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1009; Rev 0; 10/07
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
General Description
Features
The MAX5960L evaluation kit (EV kit) is a fully assem-
bled and tested surface-mount quad hot-plug controller
♦ Demonstrates PCI Express x16 Quad Hot-Plug
Design
®
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.
♦ 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
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).
Protection
♦ Undervoltage Lockout Protection for 12V, 3.3V,
and 3.3V Auxiliary Supplies
♦ Configurable Power-On Reset (POR)
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.
♦ 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
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
♦ Input/Output Interface Using MAX7313 I/O
®
Expanders (SMBus Interface) or Local Control
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.
♦ Can Be Controlled Locally Without Software
♦ Windows 98SE/2000/XP-Compatible Software
♦ Fully Assembled and Tested
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.
Ordering Information
PART
TYPE
EV Kit
MAX5960LEVKIT+
MAX5960LEVCMAXQU+
+Denotes lead-free and RoHS-compliant.
EV System
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.
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.
________________________________________________________________ Maxim Integrated Products
1
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.
MAX5960L Evaluation Kit/
Evaluation System
Component Lists
MAX5960L EV System
MAX5960L EV Kit (continued)
PART
QTY
DESCRIPTION
MAX5960L evaluation kit
SMBus interface board
DESIGNATION
QTY
DESCRIPTION
MAX5960LEVKIT+
CMAXQUSB+
1
1
JU1–JU4, JU9,
JU10, JU15, JU16
8
2-pin headers
JU5–JU8,
JU11–JU14
8
8
3-pin headers
MAX5960L EV Kit
20V, 13.4A n-channel MOSFETs
(8-pin SO)
DESIGNATION
QTY
DESCRIPTION
N1–N8
0.1µF 10ꢀ, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K
C1, C3, C40,
C41, C42
Vishay Si7448DP-T1-E3
5
R1–R6,
R11–R16, R73,
R76, R82, R83,
R84, R90, R93,
R99–R104
C2, C4, C11,
C14, C17, C20,
C24, C25,
25
10kΩ 5ꢀ resistors (0603)
Not installed, ceramic capacitors
(0805)
0
C28, C30
R7–R10, R17,
R18
C5, C10, C15,
C16, C21, C22,
C23, C26, C27,
C31–C34
0
4
Not installed, resistors (0603)
1µF 10ꢀ, 16V X7R ceramic
capacitors (0805)
Murata GRM21BR71C105K
13
R30, R36, R45,
R50
1kΩ 5ꢀ resistors (1206)
10µF 20ꢀ, 25V X7R ceramic
capacitors (1812)
TDK 4532X7R1E106M
R31, R35, R38,
R42, R46, R49,
R52, R55
C12, C18, C29
C13
3
1
0
Not installed, resistors (0805)
1500µF, 16V electrolytic capacitor
(12.5mm x 13.5mm case)
Panasonic EEVFK1C152Q
0.008Ω 1ꢀ, 0.5W sense
resistors (2010)
Vishay WSL20108L000FEA or
IRC LRC-LRF2010LF-01-R008-G
R32, R34, R47,
R48
4
1
3300µF, 6.3V, low-Z electrolytic
capacitor
(12.5mm x 13.5mm case)
SANYO 6CE3300KX
R33
750Ω 1ꢀ resistor (1210)
150Ω 5ꢀ resistors (0603)
C19
1
1
R37, R41, R43,
R44, R51, R56,
R57, R58, R74,
R75, R80, R81,
R91, R92, R97,
R98
100µF, 6.3V, low-Z electrolytic
capacitor (6.3mm x 6.0mm case)
SANYO 6CE100KX
16
4
C35
D1
1A, 40V Schottky diode (SOD-123)
Diodes Inc. 1N5819HW-F
1
0.005Ω 1ꢀ, 0.5W sense
resistors (2010)
Vishay WSL20105L000FEA
R39, R40, R53,
R54
D2–D14, D17,
D18, D21
16
Green surface-mount LEDs (1206)
Yellow surface-mount LEDs (1206)
D15, D16, D19,
D20
R70, R71, R78,
R79, R88, R89,
R95, R96
4
8
4
51kΩ 5ꢀ resistors (0603)
PCI Express x16 connectors
Molex 87715-9305
J1–J4
J5–J8
J9
4
4
1
R72, R77, R94,
R111
3.3kΩ 5ꢀ resistors (0603)
8-pin headers
SW1–SW4
4
8
SPST momentary-contact switches
SPDT slide switches
2 x 10 right-angle female
receptacle
SW5–SW12
Evluate:/MAX5960L
2
_______________________________________________________________________________________
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
MAX5960L EV Kit (continued)
DESIGNATION
U1
QTY
DESCRIPTION
DESIGNATION
QTY
DESCRIPTION
Quad PCI Express hot-swap
controller (80-pin TQFP 12mm x
12mm x 1mm)
TP3, TP5, TP7, TP8,
TP20, TP22, TP25,
TP26, TP28, TP30,
TP32, TP33, TP34,
TP37, TP38, TP40,
TP43, TP44, TP45,
OUT1–OUT4
1
Maxim MAX5960LECS+
23
PC test points, red
Maxim 16-port I/O expanders
(24-pin thin QFN, 4mm x 4mm)
MAX7313ATG+
U2, U3, U4
3
5
TP11–TP18, TP23,
TP29, TP41, TP46,
TP47, TP48,
VIN1, VIN2,
VIN3, GND, GND
Uninsulated banana jacks
16
10
PC test points, black
—
—
—
16
10
1
Shunts (JU1–JU16)
TP53, TP54
Rubber bumpers
TP21, TP24, TP27,
TP31, TP35, TP36,
TP39, TP42,
PCB: MAX5960L Evaluation Kit+
PC test points, miniature, red
TP50, TP51
Component Suppliers
SUPPLIER
PHONE
WEBSITE
Diodes Inc.
IRC
805-446-4800
361-992-7900
770-436-1300
714-373-7366
619-661-6835
847-803-6100
—
www.diodes.com
www.irctt.com
Murata
www.murata.com
Panasonic
www.panasonic.com
www.sanyodevice.com
www.component.tdk.com
www.vishay.com
SANYO Electronic Device
TDK
Vishay
Note: Indicate that you are using the MAX5959A/MAX5959L/MAX5960A/MAX5960L when contacting these component suppliers.
MAX5960L EV Kit Files
FILE
INSTALL.EXE
DESCRIPTION
Installs the EV kit files on your computer
Application program
MAX5960L.EXE
HELPFILE.HTM
MAX5960L EV kit help file
FTD2XX.INF
USB device driver file
TROUBLESHOOTING_USB.PDF
UNINST.INI
USB driver installation help file
Uninstalls the EV kit software
The 3.3V power supply can be used to power the main
3.3V and 3.3VAUX inputs.
Quick Start
(Hardware Only)
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.
Required equipment:
•
One each of the following DC power supplies:
12V, 25A
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.
3.3V, 20A
•
Three voltmeters
_______________________________________________________________________________________
3
MAX5960L Evaluation Kit/
Evaluation System
MAX5960L Hardware Only Configuration
1) Verify that shunts are installed on jumpers JU1,
JU2, JU3, and JU4 (PRES-DET_).
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.
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).
Required Equipment
3) Verify that a shunt is not installed on jumpers JU9,
JU10, JU15, and JU16 (MRL_).
•
One each of the following DC power supplies:
12V, 25A
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.
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
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.
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.
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.
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.
8) Set switches SW5, SW7, SW9, SW11 (ON_), and
SW6, SW8, SW10, SW12 (AUXON_) to the OFF
position.
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.
9) Turn on both power supplies in any sequence.
10) Set switches SW5 (ONA) and SW6 (AUXONA) to
the ON position.
3) Verify that no shunts are installed on jumpers JU1,
11) Verify that the voltage at channel A pad is as
shown below:
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.
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.
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.
Evluate:/MAX5960L
4
_______________________________________________________________________________________
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
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.
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.
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.
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.
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.
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.
_______________________________________________________________________________________
5
MAX5960L Evaluation Kit/
Evaluation System
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.
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.
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.
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 and Switch Selection
The jumper and switch selections in the following tables
display the functions provided by the MAX5960L EV kit.
Table 1. Channel A, B, C, and D Presence-Detection Functions
JUMPER
SHUNT
Installed
None*
MAX5960L PIN CONNECTION
PRES-DETA pin pulled low
PRES-DETA pin pulled high
PRES-DETB pin pulled Low
PRES-DETB pin pulled high
PRES-DETC pin pulled low
PRES-DETC pin pulled high
PRES-DETD pin pulled low
PRES-DETD pin pulled high
EV KIT OPERATION SIMULATED
PCI Express card inserted in channel A
No PCI Express card in channel A
PCI Express card inserted in channel B
No PCI Express card in channel B
PCI Express card inserted in channel C
No PCI Express card in channel C
PCI Express card inserted in channel D
No PCI Express card in channel D
JU3
Installed
None*
JU4
JU2
JU1
Installed
None*
Installed
None*
*When using a real PCI Express card, these jumper shunts must be removed so that the card has control of the presence detection.
Table 2. Channel A Switch Functions
SWITCH
SWITCH STATE
MAX5960L PIN CONNECTION
MAX5960L OPERATION
Enable channel A main outputs
ON
OFF
ON
ONA pin pulled high
SW5
ONA pin pulled low
Disable channel A main outputs
Enable channel A 3.3V auxiliary output
Disable channel A 3.3V auxiliary output
AUXONA pin pulled high
AUXONA pin pulled low
SW6
OFF
Evluate:/MAX5960L
6
_______________________________________________________________________________________
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
Channel C Enable/Disable Switches
Control Methods, Other Configurations,
and I/O Expander
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.
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.
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.
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 0Ω resis-
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.
Table 3. Channel B Switch Functions
SWITCH
SWITCH STATE
MAX5960L PIN CONNECTION
MAX5960L OPERATION
Enable channel B main outputs
ON
OFF
ON
ONB pin pulled high
ONB pin pulled low
SW7
Disable channel B main outputs
Enable channel B 3.3V auxiliary output
Disable channel B 3.3V auxiliary output
AUXONB pin pulled high
AUXONB pin pulled low
SW8
OFF
Table 4. Channel C Switch Functions
SWITCH
SWITCH STATE
MAX5960L PIN CONNECTION
MAX5960L OPERATION
Enable channel C main outputs
ON
OFF
ON
ONC pin pulled high
SW9
ONC pin pulled low
Disable channel C main outputs
Enable channel C 3.3V auxiliary output
Disable channel C 3.3V auxiliary output
AUXONC pin pulled high
AUXONC pin pulled low
SW10
OFF
Table 5. Channel D Switch Functions
SWITCH
SWITCH STATE
MAX5960L PIN CONNECTION
OND pin pulled high
MAX5960L OPERATION
Enable channel D main outputs
ON
OFF
ON
SW11
OND pin pulled low
Disable channel D main outputs
Enable channel D 3.3V auxiliary output
Disable channel D 3.3V auxiliary output
AUXOND pin pulled high
AUXOND pin pulled low
SW12
OFF
_______________________________________________________________________________________
7
MAX5960L Evaluation Kit/
Evaluation System
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.
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.
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.
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.
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.
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.
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.
Evluate:/MAX5960L
8
_______________________________________________________________________________________
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
Table 6. MAX5960L Channels A, B, C, and D ON_ Signals Configuration
JUMPER
JU5
SHUNT LOCATION
1 and 2
1 and 2
1 and 2
1 and 2
1 and 2
1 and 2
1 and 2
1 and 2
2 and 3
2 and 3
2 and 3
2 and 3
2 and 3
2 and 3
2 and 3
2 and 3
MAX5960L PIN CONNECTION
AUXONA controlled by SW6
EV KIT OPERATION
Local switch control
JU6
ONA controlled by SW5
Local switch control
JU7
ONB controlled by SW7
Local switch control
JU8
AUXONB controlled by SW8
Local switch control
JU11
JU12
JU13
JU14
JU5
AUXONC controlled by SW9
Local switch control
ONC controlled by SW10
Local switch control
OND controlled by SW11
Local switch control
AUXOND controlled by SW12
Local switch control
AUXONA controlled by U2, MAX7313 with SMBus
ONA controlled by U2, MAX7313 with SMBus
ONB controlled by U2, MAX7313 with SMBus
AUXONB controlled by U2, MAX7313 with SMBus
AUXONC controlled by U3, MAX7313 with SMBus
ONC controlled by U3, MAX7313 with SMBus
OND controlled by U3, MAX7313 with SMBus
AUXOND controlled by U3, MAX7313 with SMBus
SMBus or computer control
SMBus or computer control
SMBus or computer control
SMBus or computer control
SMBus or computer control
SMBus or computer control
SMBus or computer control
SMBus or computer control
JU6
JU7
JU8
JU11
JU12
JU13
JU14
Figure 1. The MAX5960L Evaluation Software Main Window for Reading Current EV Kit Status and Sending Commands
_______________________________________________________________________________________
9
MAX5960L Evaluation Kit/
Evaluation System
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.
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.
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.
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.
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.
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 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.
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
Table 7. MAX7313 I/O Port Configuration/Function for U2 and U3
MAX7313
PORT P7
PORT P6
PORT P5
PORT P4
PORT P3
PORT P2
PORT P1
(BIT D1)
PORT P0
(BIT D0)
PORT I/O
(BIT D7)
(BIT D6)
(BIT D5)
(BIT D4)
(BIT D3)
(BIT D2)
PORT
CONFIG
OUTPUT
OUTPUT
INPUT
INPUT
FAULT
OUTPUT
AUXON
OUTPUT
ON
INPUT
OUT
INPUT
MRL
EV KIT
FUNCTION
YELLOW
LED
GREEN LED
PRES-DET
Table 8. MAX7313 I/O Port Configuration/Function for U4
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
Evluate:/MAX5960L
10 ______________________________________________________________________________________
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
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.
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.
General Troubleshooting
Problem: Software reports it cannot find the inter-
face board.
•
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.
•
•
•
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.
•
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
______________________________________________________________________________________ 11
MAX5960L Evaluation Kit/
Evaluation System
+3.3VAUX
3.3AUXOB
R3
10kΩ
C1
0.1μF
C2
OPEN
R2
10kΩ
PWRGDB
FAULTB
3.3AUXOA
PWRGDA
R4
10kΩ
R1
10kΩ
+3.3VAUX
3.3GB
+3.3VAUX
3.3SB-
FAULTA
3.3GA
3.3SB+
+3.3V
PGND
3.3SA-
12GB
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
+3.3VAUX
60
59
58
3.3SA+
+3.3V
1
2
3
12SB-
3.3SA+
12SB-
12SB+
12SB+
VIN1
+3.3VAUX
12GA
12GA
+3.3VAUX
R6
10kΩ
TP5
SW2
R5
10kΩ
AUXONB
ONB
12SA-
12SA-
AUXONB
TP3
SW1
57
56
4
5
12SA+
VIN1
R11
10kΩ
+3.3VAUX
R12
ONB
12SA+
3
1
INPUT1
AUXONA
AUXONA
ONA
TP7
SW3
ATTN1
OUT1
OUT1
55
6
OUTPUT1
ONA
1
3
10kΩ
54
53
52
51
50
3
1
7
8
ATTN3
INPUT2
OUTPUT2
N.C.
INPUT3
OUTPUT3
INPUT4
INPUT3
OUT3
TP8
SW4
OUT2
OUT2
ATTN2
OUT3
OUT4
U1
1
3
9
ATTN4
INPUT4
OUT4
R7
OPEN
FOND
JU1
10
11
MAX5960L
FOND
OUTPUT4
FONA
R9
OPEN
PRES-DETD
PRES-DETD
FONA
JU3
JU4
49
48
12
13
14
OND
PRES-DETA
FONB
OND
R10
OPEN
PRES-DETA
FONB
AUXOND
AUXOND
47
GND
PRES-DETB
R8
OPEN
PRES-DETB
FONC
JU2
15
16
17
18
46
45
FONC
3.3SD+
+3.3V
3.3SD+
3.3SD-
3.3SD-
PRES-DETC
PRES-DETC
ONC
44
43
ONC
3.3GD
12SD+
3.3GD
12SD+
VIN1
AUXONC
AUXONC
42
41
19
20
12SC+
VIN1
12SC+
12SC-
12SD-
12GD
12SD-
12GD
12SC-
VIN1
D1
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
12GC
C5
1μF
3.3SC+
+3.3V
R18
OPEN
PGND
+3.3VAUX
3.3SC-
3.3GC
R17
OPEN
C3
0.1μF
C4
FAULTC
OPEN
R13
10kΩ
R16
10kΩ
+3.3VAUX
PWRGDC
+3.3VAUX
FAULTD
R14
10kΩ
R15
10kΩ
3.3AUXOC
TP15
3.3AUXOD
PWRGDD
TP11
TP12
TP13
TP14
TP16
TP17
TP18
Figure 3. MAX5960L EV Kit Schematic, Quad PCI Express Controller
Evluate:/MAX5960L
12 ______________________________________________________________________________________
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
12VC
12VA
GND
(12V)
12SC+
VIN1
12SA+
VIN1
C15
1μF
C10
1μF
12VC
TP25
GND
12VA
TP20
VIN1
VIN1
12SC-
12SA-
12GA
VIN1
GND
R34
0.008Ω
1%
R32
0.008Ω
1%
C12
10μF
TP22
TP23
N2
3
1
7
8
3
1
N1
8
7
N2S
N1S
2
2
6
5
5
6
R36
1kΩ
R30
1kΩ
R33
750Ω
4
4
TP21
TP24
12GC
R31
OPEN
12VA
D2
R35
OPEN
12VC
D3
(3.3V)
C13
1500μF
16V
+3.3V
VIN2 TP28
C14
OPEN
C11
OPEN
C19
3300μF
6.3V
C18
10μF
+3.3V
+3.3V
3.3VA
GND
3.3VC
GND
3.3SA+
+3.3V
3.3SC+
+3.3V
C16
1μF
C21
1μF
GND
TP29
3.3VA
TP26
3.3VC
TP32
R39
0.005Ω
1%
R40
0.005Ω
1%
3
1
N3
N4
3
1
8
7
7 8
N3S
N4S
3.3SA-
3.3SC-
2
2
5
6
6 5
R37
150Ω
R41
150Ω
3.3GC
TP27
4
3.3VAUXA
TP33
3.3VAUXC
TP30
4
TP31
3.3GA
3.3VAUXA
GND
3.3AUXOC
3.3VAUXC
GND
3.3AUXOA
3.3VA
D4
3.3VC
D5
R42
OPEN
R38
OPEN
C34
1μF
C22
1μF
C20
OPEN
R44
150Ω
R43
150kΩ
C17
OPEN
3.3VAUXA
D6
3.3VC
D7
12VB
GND
12VD
12SD+
VIN1
C23
1μF
C26
1μF
12VB
TP34
12VD
TP37
GND
VIN1
12SD-
R48
R47
0.008Ω
1%
0.008Ω
3
1
N5
N6
4
3
1
8
7
7 8
1%
N5S
N6S
2
2
5
6
6 5
R50
1kΩ
R45
1kΩ
12GD
4
TP35
12GB
+3.3VAUX
VIN3 TP40
TP36
R46
OPEN
12VB
D8
R49
OPEN
12VD
D9
C35
100μF
6.3V
C29
10μF
C25
OPEN
C24
OPEN
TP41
+3.3V
+3.3V
3.3VB
GND
3.3VD
GND
3.3SD+
+3.3V
3.3SB+
+3.3V
C27
1μF
C31
1μF
3.3VB
TP38
3.3VB
TP43
R53
0.005Ω
1%
R54
0.005Ω
1%
3
1
N7
N8
3
1
8
7
7 8
N7S
N8S
3.3SB
3.3SD-
2
2
5
6
6 5
R51
150Ω
R56
150Ω
TP39
4
3.3GD
4
3.3VAUXB
TP44
3.3VAUXD
TP45
3.3GB
TP42
3.3VB
D10
3.3VD
D11
R52
OPEN
3.3VAUXB
3.3VAUXD
GND
R55
OPEN
3.3AUXOB
TP46 TP47 TP48
3.3VAUXOD
C33
1μF
C32
1μF
GND
C30
OPEN
C28
R58
R57
150Ω
OPEN
150Ω
3.3VAUXB
D12
3.3VD
D13
Figure 4. MAX5960L EV Kit Schematic, Quad PCI Express Hot Swap
______________________________________________________________________________________ 13
MAX5960L Evaluation Kit/
Evaluation System
O N C
P 0
P 1
A D 0
P 1 5
P 1 4
P 1 3
P 1 2
O U T 3
A U X O N C
P 2
P 3
P 4
P R E S - D E T D
F A U L T D
F A U L T C
MAX731
P R E S - D E T C P 5
P 1 1
O N A
P 0
P 1
P 0
P 1
P 2
P 3
P 4
P 5
A D 0
P 1 5
P 1 4
P 1 3
P 1 2
P 1 1
A D 0
P 1 5
P 1 4
P 1 3
P 1 2
O U T 1
A U X O N A
P 2
P 3
P R E S - D E T B
F A U L T B
F A U L T A
3
MAX731
P 4
P R E S - D E T A P 5
P 1 1
Figure 5. MAX5960L EV Kit Schematic, SMBus I/O Control
Evluate:/MAX5960L
14 ______________________________________________________________________________________
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
J2-A
(CHANNEL B)
J1-A
(CHANNEL A)
B1
B2
B3
B4
B5
B6
B7
B8
B9
B1
B2
B3
B4
B5
B6
B7
B8
B9
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
N5S
N1S
+12V
+12V
+12V
GND
SMCLK
SMDAT
GND
+3.3V
JTAG1
3.3VAUX
WAKE#
PRSNT1#
+12V
+12V
+12V
+12V
+12V
GND
SMCLK
SMDAT
GND
+3.3V
JTAG1
3.3VAUX
WAKE#
PRSNT1#
+12V
+12V
GND
JTAG2
JTAG3
JTAG4
JTAG5
+3.3V
N5S
N1S
GND
JTAG2
JTAG3
JTAG4
JTAG5
+3.3V
N7S
N3S
N7S
N3S
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
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
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
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
3.3AUXOB
+3.3V
PERST#
3.3AUXOA
+3.3V
PERST#
PERST#_J2
PERST#_J1
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
A40
A41
A42
A43
A44
A45
A46
A47
A48
A49
A50
A51
A52
A53
A54
A55
A56
A57
A58
A59
A60
A61
A62
A63
A64
A65
A66
A67
A68
A69
A70
A71
A72
A73
A74
A75
A76
A77
A78
A79
A80
A81
A82
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
A40
A41
A42
A43
A44
A45
A46
A47
A48
A49
A50
A51
A52
A53
A54
A55
A56
A57
A58
A59
A60
A61
A62
A63
A64
A65
A66
A67
A68
A69
A70
A71
A72
A73
A74
A75
A76
A77
A78
A79
A80
A81
A82
RSVD
GND
PETP0
PETN0
GND
PRSNT2#
GND
PETP1
PETN1
GND
GND
PETP2
PETN2
GND
GND
PETP3
PETN3
GND
RSVD
PRSNT2#
GND
PETP4
PETN4
GND
GND
REFCLK+
REFCLK-
GND
PERP0
PERN0
GND
RSVD
GND
PETP0
PETN0
GND
PRSNT2#
GND
PETP1
PETN1
GND
GND
PETP2
PETN2
GND
GND
PETP3
PETN3
GND
RSVD
PRSNT2#
GND
PETP4
PETN4
GND
GND
REFCLK+
REFCLK-
GND
PERP0
PERN0
GND
J5
J6
(CHANNEL A)
(CHANNEL B)
PRES-DETD
PRES-DETA
J5-1
J5-2
J5-3
J5-4
J5-5
J5-6
J5-7
J5-8
PERST#_J1
J6-1
J6-2
J6-3
J6-4
J6-5
J6-6
J6-7
J6-8
PERST#_J2
RSVD
GND
RSVD
GND
PRES-DETA
ONA
PRES-DETB
ONB
PERP1
PERN1
GND
GND
PERP2
PERN2
GND
PERP1
PERN1
GND
GND
PERP2
PERN2
GND
AUXONA
FAULTA
OUT1
AUXONB
FAULTB
OUT2
PWRGDA
PWRGB
GND
GND
PERP3
PERN3
GND
RSVD
RSVD
GND
PERP4
PERN4
GND
GND
PERP5
PERN5
GND
GND
PERP3
PERN3
GND
RSVD
RSVD
GND
PERP4
PERN4
GND
GND
PERP5
PERN5
GND
GND
PRES-DETB
PRES-DETA
GND
GND
PETP5
PETN5
GND
PETP5
PETN5
GND
GND
GND
PETP6
PETN6
GND
PETP6
PETN6
GND
PERP6
PERN6
GND
PERP6
PERN6
GND
GND
GND
PETP7
PETN7
GND
PRSNT2#
GND
PETP8
PETN8
GND
PETP7
PETN7
GND
PRSNT2#
GND
PETP8
PETN8
GND
GND
GND
PERP7
PERN7
GND
RSVD
GND
PERP8
PERN8
GND
GND
PERP9
PERN9
GND
GND
PERP10
PERN10
GND
GND
PERP11
PERN11
GND
GND
PERP7
PERN7
GND
RSVD
GND
PERP8
PERN8
GND
GND
PERP9
PERN9
GND
GND
PERP10
PERN10
GND
GND
PERP11
PERN11
GND
GND
PRES-DETB
PRES-DETA
GND
GND
PETP9
PETN9
GND
PETP9
PETN9
GND
GND
GND
PETP10
PETN10
GND
PETP10
PETN10
GND
GND
GND
PETP11
PETN11
GND
PETP11
PETN11
GND
GND
GND
PETP12
PETN12
GND
PETP12
PETN12
GND
PERP12
PERN12
GND
PERP12
PERN12
GND
GND
GND
PETP13
PETN13
GND
PETP13
PETN13
GND
GND
GND
PERP13
PERN13
GND
GND
PERP14
PERN14
GND
GND
PERP15
PERN15
GND
PERP13
PERN13
GND
GND
PERP14
PERN14
GND
GND
PERP15
PERN15
GND
GND
GND
PETP14
PETN14
GND
PETP14
PETN14
GND
GND
GND
PETP15
PETN15
GND
PRSNT2#
RSVD
PETP15
PETN15
GND
PRSNT2#
RSVD
PRES-DETB
PRES-DETA
J2-B
J1-B
Figure 6. MAX5960L EV Kit Schematic, PCI Express x16 Channels A and B
______________________________________________________________________________________ 15
MAX5960L Evaluation Kit/
Evaluation System
J4-A
J3-A
(CHANNEL D)
(CHANNEL C)
B1
B2
B3
B4
B5
B6
B7
B8
B9
B1
B2
B3
B4
B5
B6
B7
B8
B9
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A1
A2
A3
A4
A5
A6
A7
A8
N6S
N2S
+12V
+12V
+12V
GND
PRSNT1#
+12V
+12V
+12V
GND
PRSNT1#
+12V
N6S
N2S
+12V
+12V
GND
+12V
GND
SMCLK
SMDAT
GND
+3.3V
JTAG1
3.3VAUX
WAKE#
JTAG2
JTAG3
JTAG4
JTAG5
+3.3V
SMCLK
SMDAT
GND
+3.3V
JTAG1
3.3VAUX
WAKE#
JTAG2
JTAG3
JTAG4
JTAG5
+3.3V
N8S
N4S
A9
N8S
N4S
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
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
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
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
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
A40
A41
A42
A43
A44
A45
A46
A47
A48
A49
A50
A51
A52
A53
A54
A55
A56
A57
A58
A59
A60
A61
A62
A63
A64
A65
A66
A67
A68
A69
A70
A71
A72
A73
A74
A75
A76
A77
A78
A79
A80
A81
A82
3.3AUXOD
3.3AUXOC
+3.3V
PERST#
+3.3V
PERST#
PERST#_J4
PERST#_J3
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
A40
A41
A42
A43
A44
A45
A46
A47
A48
A49
A50
A51
A52
A53
A54
A55
A56
A57
A58
A59
A60
A61
A62
A63
A64
A65
A66
A67
A68
A69
A70
A71
A72
A73
A74
A75
A76
A77
A78
A79
A80
A81
A82
RSVD
GND
PETP0
PETN0
GND
PRSNT2#
GND
PETP1
PETN1
GND
GND
PETP2
PETN2
GND
GND
PETP3
PETN3
GND
RSVD
PRSNT2#
GND
PETP4
PETN4
GND
GND
REFCLK+
REFCLK-
GND
PERP0
PERN0
GND
RSVD
GND
PETP0
PETN0
GND
PRSNT2#
GND
PETP1
PETN1
GND
GND
PETP2
PETN2
GND
GND
PETP3
PETN3
GND
RSVD
PRSNT2#
GND
PETP4
PETN4
GND
GND
REFCLK+
REFCLK-
GND
PERP0
PERN0
GND
J8
J7
(CHANNEL D)
(CHANNEL C)
PRES-DETD
PRES-DETC
J8-1
J8-2
J8-3
J8-4
J8-5
J8-6
J8-7
J8-8
PERST#_J4
J7-1
J7-2
J7-3
J7-4
J7-5
J7-6
J7-7
J7-8
PERST#_J3
PRES-DETC
ONC
RSVD
GND
RSVD
GND
PRES-DETD
OND
PERP1
PERN1
GND
GND
PERP2
PERN2
GND
PERP1
PERN1
GND
GND
PERP2
PERN2
GND
AUXOND
FAULTD
OUT4
AUXONC
FAULTC
OUT3
PWRGDD
PWRGDC
GND
GND
PERP3
PERN3
GND
RSVD
RSVD
GND
PERP4
PERN4
GND
GND
PERP5
PERN5
GND
GND
PERP3
PERN3
GND
RSVD
RSVD
GND
PERP4
PERN4
GND
GND
PERP5
PERN5
GND
GND
PRES-DETD
PRES-DETC
GND
GND
PETP5
PETN5
GND
PETP5
PETN5
GND
GND
GND
PETP6
PETN6
GND
PETP6
PETN6
GND
PERP6
PERN6
GND
PERP6
PERN6
GND
GND
GND
PETP7
PETN7
GND
PRSNT2#
GND
PETP8
PETN8
GND
PETP7
PETN7
GND
PRSNT2#
GND
PETP8
PETN8
GND
GND
GND
PERP7
PERN7
GND
RSVD
GND
PERP8
PERN8
GND
GND
PERP9
PERN9
GND
GND
PERP10
PERN10
GND
GND
PERP11
PERN11
GND
GND
PERP7
PERN7
GND
RSVD
GND
PERP8
PERN8
GND
GND
PERP9
PERN9
GND
GND
PERP10
PERN10
GND
GND
PERP11
PERN11
GND
GND
PRES-DETD
PRES-DETC
GND
GND
PETP9
PETN9
GND
PETP9
PETN9
GND
GND
GND
PETP10
PETN10
GND
PETP10
PETN10
GND
GND
GND
PETP11
PETN11
GND
PETP11
PETN11
GND
GND
GND
PETP12
PETN12
GND
PETP12
PETN12
GND
PERP12
PERN12
GND
PERP12
PERN12
GND
GND
GND
PETP13
PETN13
GND
PETP13
PETN13
GND
GND
GND
PERP13
PERN13
GND
GND
PERP14
PERN14
GND
GND
PERP15
PERN15
GND
PERP13
PERN13
GND
GND
PERP14
PERN14
GND
GND
PERP15
PERN15
GND
GND
GND
PETP14
PETN14
GND
PETP14
PETN14
GND
GND
GND
PETP15
PETN15
GND
PRSNT2#
RSVD
PETP15
PETN15
GND
PRSNT2#
RSVD
PRES-DETC
PRES-DETD
J4-B
J3-B
Figure 7. MAX5960L EV Kit Schematic, PCI Express x16 Channels C and D
Evluate:/MAX5960L
16 ______________________________________________________________________________________
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
Figure 8. MAX5960L EV Kit Component Placement Guide—Component Side
______________________________________________________________________________________ 17
MAX5960L Evaluation Kit/
Evaluation System
Figure 9. MAX5960L EV Kit PCB Layout—Component Side
Evluate:/MAX5960L
18 ______________________________________________________________________________________
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
Figure 10. MAX5960L EV Kit PCB Layout—Inner Layer, Ground Plane Layer 2
______________________________________________________________________________________ 19
MAX5960L Evaluation Kit/
Evaluation System
Figure 11. MAX5960L EV Kit PCB Layout—Inner Layer, Power Plane Layer 3
Evluate:/MAX5960L
20 ______________________________________________________________________________________
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
Figure 12. MAX5960L EV Kit PCB Layout—Inner Layer, Ground Plane Layer 4
______________________________________________________________________________________ 21
MAX5960L Evaluation Kit/
Evaluation System
Figure 13. MAX5960L EV Kit PCB Layout—Inner Layer, Signal Layer 5
Evluate:/MAX5960L
22 ______________________________________________________________________________________
MAX5960L Evaluation Kit/
Evaluation System
Evluate:/MAX5960L
Figure 14. MAX5960L EV Kit PCB Layout—Solder Side
______________________________________________________________________________________ 23
MAX5960L Evaluation Kit/
Evaluation System
Figure 15. MAX5960L EV Kit Component Placement Guide—Solder Side
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.
Evluate:/MAX5960L
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
相关型号：
MAX5961ETM+
Power Supply Support Circuit, Adjustable, 4 Channel, BICMOS, 7 X 7 MM, ROHS COMPLIANT, MO-220, TQFN-48
MAXIM
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