Pentek Onyx 78741 User manual

Pentek Model 78741 Installation Manual Page 1
Manual Part No: 800.78741 Rev: 2.5 − November 9, 2015
Pentek, Inc.
One Park Way
Upper Saddle River, NJ 07458
(201) 818−5900
http://www.pentek.com
Copyright © 2013−2015
INSTALLATION MANUAL
MODEL 78741
2−Channel 1.8 GHz A/D / 1−Channel 3.6 GHz A/D
With Digital Downconverter
Onyx® Family PCIe Board

Page 2 Pentek Model 78741 Installation Manual
Warranty
Pentek warrants that all products manufactured by Pentek conform to published Pentek specifications and are free from defects in mate−
rials and workmanship for a period of one year from the date of delivery when used under normal operating conditions and within the
service conditions for which they were furnished. The obligation of Pentek arising from a warranty claim shall be limited to repairing or at
its option, replacing without charge, any product that in Pentek’s sole opinion proves to be defective within the scope of the warranty.
Pentek must be notified in writing of the defect or nonconformity within the warranty period and the affected product returned to Pentek
within thirty days after discovery of such defect or nonconformity. Buyer shall prepay shipping charges, taxes, duties and insurance for
products returned to Pentek for warranty service. Pentek shall pay for the return of products to buyer except for products returned from
another country.
Pentek shall have no responsibility for any defect or damage caused by improper installation, unauthorized modification, misuse, neglect,
inadequate maintenance, or accident, or for any product that has been repaired or altered by anyone other than Pentek or its authorized
representatives.
The warranty described above is buyer’s sole and exclusive remedy and no other warranty, whether written or oral, is expressed or
implied. Pentek specifically disclaims fitness for a particular purpose. Under no circumstances shall Pentek be liable for any direct, indi−
rect, special, incidental, or consequential damages, expenses, losses or delays (including loss of profits) based on contract, tort, or any
other legal theory.
Copyrights
The contents of this publication are Copyright © 2013−2015, Pentek, Inc. All Rights Reserved. Contents of this publication may not be
reproduced in any form without written permission.
Trademarks
Pentek, Onyx, GateXpress, GateFlow, and ReadyFlow are registered trademarks of Pentek, Inc.
PCI, PCI Express, PCIe, and PCI−SIG are trademarks or registered trademarks of PCI−SIG. PLX and the PLX logo are registered
trademarks of PLX Technology, Inc. Xilinx and Virtex are registered trademarks or trademarks of Xilinx, Inc. FireFly is a trademark of
Samtec, Inc.
Manual Revision History
Date Revision Comments
12/12/13 0.1 Initial release.
3/12/14 1.0 Revised the default maximum speed to Gen 3 in Sect 2.4.
5/8/14 1.1 Removed references to Model 71740. Revised references to user manuals.
7/17/14 2.0 Revised for Pentek 7807 PCIe carrier in place of 7806 carrier. Revised Sect 2.12.3 to resolve KB Case 1440.
9/16/14 2.1 Removed the “factory use only” statement from Sect 2.9.2, JTAG Connector.
10/13/14 2.2 Sect 1.6, corrected the estimated power consumption. Sect 2.11.2, corrected analog full−scale input: +2
dBm to +4 dBm, programmable. Sect 2.11.2, corrected analog signal inputs IN2 and IN1 operation and use.
3/12/15 2.3 Sect 1.6, revised the power consumption specification.
7/22/15 2.4 Sect 2.9.6, added Pentek model number for connector.
11/9/15 2.5 Sect 2.9.6, updated GPIO connector mating cable identifier.
Printed in the United States of America.

Pentek Model 78741 Installation Manual Page 3
Page
Table of Contents
Rev.: 2.5
Chapter 1: Introduction
1.1 General Description..............................................................................................................................5
1.2 Model 78741 Features...........................................................................................................................5
1.3 Model 78741 Documentation ..............................................................................................................5
1.4 Model 78741 Block Diagram ...............................................................................................................6
Figure 1−1: Model 78741 Block Diagram.........................................................................................6
1.5 Principle of Operation..........................................................................................................................7
1.6 Specifications.........................................................................................................................................8
Chapter 2: Installation and Connections
2.1 Inspection...............................................................................................................................................9
Figure 2−1: Model 78741 Assembly..................................................................................................9
2.2 Jumper and Switch Settings ..............................................................................................................10
2.3 Removing XMC Module from PCIe Carrier ..................................................................................11
Figure 2−2: Removing 71741 XMC from PCIe Carrier................................................................11
2.4 XMC Module Switches ......................................................................................................................12
Figure 2−3: Model 71741 XMC PCB Assembly Drawing, Solder Side....................................12
Table 2−1: SW1 − FPGA Configuration ........................................................................................13
Table 2−2: FPGA Configuration Select − Switches SW1−3:4....................................................13
2.5 XMC Module LEDs ............................................................................................................................14
Figure 2−4: Model 71741 Main PCB, Solder Side LEDs .............................................................14
Table 2−3: XMC PCB LED Use........................................................................................................15
2.6 PCIe Carrier Jumpers .........................................................................................................................16
Figure 2−5: Model 7807 PCIe Carrier PCB Connector Side − Jumpers & Switches..............16
Table 2−4: JTAG Signal Select − Jumper Blocks J18, J19, J20, J21, J22 ....................................17
2.7 PCIe Carrier Switches ........................................................................................................................18
Table 2−5: XMC Modes − Switch SW1..........................................................................................18
2.8 PCIe Carrier LEDs ..............................................................................................................................19
Figure 2−6: Model 7807 PCIe Carrier PCB Solder Side, LEDs..................................................19
2.9 PCIe Carrier Connectors....................................................................................................................20
2.9.1 Power Connector ..............................................................................................................20
2.9.2 JTAG Connector ................................................................................................................20
Table 2−6: JTAG J4 Connector .......................................................................................20
2.9.3 Fan Connector ...................................................................................................................20
Figure 2−7: PCIe Carrier Block Diagram......................................................................21
2.9.4 XMC Connectors ...............................................................................................................21
2.9.5 PMC Connector (Option 104) .........................................................................................21
2.9.6 GPIO Connector (Option 104) .........................................................................................22
Table 2−7: GPIO Connector Pins...................................................................................22
2.9.7 Gigabit Serial I/O Connectors ........................................................................................23
Table 2−8: Serial I/O Connectors J24, J25 Pins............................................................23
2.9.8 Gigabit Serial Power & Control Connectors .................................................................24
Table 2−9: Power & Control Connectors J26, J27 Pins...............................................24

Page 4 Pentek Model 78741 Installation Manual
Page
Table of Contents
Rev.: 2.5
Chapter 2: Installation and Connections (continued)
2.10 Installing the Model 78741 in a Personal Computer ..................................................................... 25
Figure 2−8: Model 78741 Mounted in PCIe Slot.......................................................................... 26
2.11 XMC Panel Connections.................................................................................................................... 27
Figure 2−9: 71741 XMC Front Panel..............................................................................................27
Table 2−10: SYNC/GATE Connector Pins.................................................................................... 28
2.12 XMC Panel LEDs................................................................................................................................ 29

Pentek Model 78741 Installation Manual Page 5
Rev.: 2.5
Chapter 1: Introduction
1.1 General Description
Pentek’s Onyx®Family Model 78741 is a multichannel, high−speed analog data con−
verter. Using the PCI Express®half−length card format, the 78741 includes a 3.6 GHz,
12−bit A/D converter and a digital downconverter.
The Model 78741 consists of one Pentek Model 71741 XMC module mounted on a Pen−
tek Model 7807 XMC PCI Express carrier, assembled and tested as a single board. It is
ready to plug into computer boards with PCI Express (PCIe®) bus slots.
1.2 Model 78741 Features
The Model 78741 includes one 71741 XMC module with the following features
• 1−channel mode with one 3.6 GHz, 12−bit A/D
• 2−channel mode with two 1.8 GHz, 12−bit A/Ds
• Xilinx®Virtex®−7 FPGA, with Pentek Digital Downconverter IP Core
• 4 GB of DDR3 SDRAM
• Sync bus for multimodule synchronization
• PCI Express Gen 3 interface x8 wide
• Optional user−configurable gigabit serial interface
• Optional LVDS connections to the Virtex−7 FPGA for custom I/O
1.3 Model 78741 Documentation
This Model 78741 Installation Manual describes the installation and connections for the
78741 PCIe assembly. Documentation of the 71741 XMC operation and programming is
provided in the supplied Model 71741 Operating Manual, Pentek document 800.71741.
These documents are available on the CD provided by Pentek, in files 80078741.pdf and
80071741.pdf (PDF format).
Datasheets for the programmable devices on Model 71741 are provided in the Pentek
Model 7x741 Series Supplemental Manual, part number 809.7x741, which is on the CD
provided by Pentek, in file 8097x741.pdf (PDF format).

Page 6 Pentek Model 78741 Installation Manual
Rev.: 2.5
1.4 Model 78741 Block Diagram
The following is a simplified block diagram of the Model 78741 A/D module.
ClockGate/
PPS
TIMING
CONTROL
IN 1
RFIn
RF
XFORMER
Gate In
Clk Reset In
RefClk In
RefClk Out
Sample Clk /
Reference Clk In
A/D Timing Bus
PPS In
IN 2
RF In
RF
XFORMER
12
1.8GHz
12-BITA/D 1.8 GHz 12-BITA/D
Input Mux
A
DC12D1800
A
/D Converter
12
GATE/SYNC
ADC Acquisition Module
Interleave
PCI Express Interface
Deinterleave
3232
DDR3
SDRAM
1 GB
DDR3
SDRAM
1 GB
32
32
DDR3
SDRAM
1 GB
DDR3
SDRAM
1 GB
48
Gigabit
Serial I/O
(option 105)
FPGA
GPIO
(option 104)
PCIe
Gen3 x8
GATEXPRESSPCIe
CONFIGURATION
MANAGER
CONFIG
FLASH
1 Gb
FPGA
Config
Bus
PCIe
Gen3 x8
VIRTEX-7 FPGA
VX330T or VX690T
DDC
PMC Baseboard/Carrier Connections
SER
TX
SER
RX
GPIO
Model 7807
PCIe Carrier
PCI Express Baseboard
P14
PMC
P16
XMC
P15
XMC
ICPort
2
Figure 1−1: Model 78741 Block Diagram

Pentek Model 78741 Installation Manual Page 7
Rev.: 2.5
1.5 Principle of Operation
Model 78741 consists of one Pentek Model 71741 XMC module mounted on a Pentek
Model 7807 XMC PCI Express carrier, assembled and tested as a single board. It is
ready to plug into computer boards with PCI Express (PCIe®) bus slots. The 71741
XMC has a Pentek−supplied FPGA IP core which includes a multiband Digital
Downconverter (DDC).
The 71741 XMC includes a single−channel 3.6−GHz A/D converter or a two−channel
1.8−GHz A/D converter. Depending on the ADC operating mode (DES or non−DES),
the ADC processes either a single analog input using two A/D channels, or two analog
inputs using separate A/D channels, and sends the digital output from both channels
to the 71741 FPGA as separate data streams. The 71741 FPGA interleaves the two data
streams for processing by the ADC acquisition module and the digital downconverter
core.
The Model 71741 XMC includes GateXpress, a sophisticated FPGA−PCIe configuration
manager for loading and reloading the FPGA. Refer to the Model 71741 Operating Man−
ual, Pentek document 800.71741, for description of GateXpress.
The 71741 includes 4 GBytes of DDR3 SDRAM. This memory is controlled by the FPGA
and is organized as four banks. Separate banks (separate address and data per bank)
allow simultaneous access to all banks. This memory can be used as:
•datacapture
• as buffer memory when transferring data between board resources or to off−board
resources
• a memory resource for custom FPGA applications.
The 7807 Carrier provides one x8 full−duplex PCIe port, allowing high−speed 71741
data transfer to and from the baseboard PCIe bus using the XMC P15 connector. An
optional XMC P16 connector provides two x4 gigabit serial I/O ports to support Xilinx
Aurora, Serial RapidIO, or PCIe interfaces (for Option 105). Two Samtec FireFly™
serial connectors (SER RX, SER TX) are included on the 7807 Carrier, providing access
to both P16 x4 gigabit serial paths from the XMC module. An optional PMC P14 con−
nector provides a data path to a GPIO connector on the carrier PCB (for Option 104).

Page 8 Pentek Model 78741 Installation Manual
Rev.: 2.5
1.6 Specifications
71741 XMC Signal Processing
Refer to the Model 71741 Operating Manual, Pentek document 800.71741.
Carrier XMC Interface
Compliance: VITA 42.0 XMC Standard
Primary XMC Connector, J15:
P15 Connectivity: One PCIe x8 link direct to the PCIe bus
XMC pins MSDA & MSCL connected to PCA9535
for control inputs to FireFly connectors
Speed: PCIe link supports Gen3 data rates
Secondary XMC Connector, J16:(Option 105)
P16 Connectivity: Two x4 gigabit serial I/O links routed as follows:
Eight serial receive lines wired from J16 to
FireFly serial connector J24 (SER RX)
Eight serial transmit lines wired from J16 to
FireFly serial connector J25 (SER TX)
Speed: Dual x4 links support data rates up to 5 Gbps
Carrier PMC Interface (Option 104)
PMC Connector: 64−pin PMC standard connector, J14
J14 Connectivity: 48 I/O lines directly wired to GPIO connector
for 71741 user I/O
Nominal Power Consumption1
PCIe Carrier:
With no XMC: 6.35 Watts typ (9.31W max)
71760 XMC: +3.3V VPWR (12V or 5V Total Power
XC7VX330T (Option 073) 3.22A 2.54A@12V or 6.1A@5V 41.12W
XC7VX690T (Option 076) 3.05A 2.79A@12V or 6.7A@5V 43.52W
Physical
Form Factor: PCIe Carrier, half−length PCIe add−in card
Height: 111.15 mm (4.376 in) (including PCIe connectors)
Length: 167.65 mm (6.60 in)
Weight
PCIe Carrier: 110 grams (3.9 oz)
XMC Module: Approximately 14 oz (400 grams), with 2−slot heat sink
1. With factory IP at the maximum clock rate.

Pentek Model 78741 Installation Manual Page 9
Rev.: 2.5
Chapter 2: Installation and Connections
2.1 Inspection
After unpacking, inspect the unit carefully for possible damage to connectors or com−
ponents. If any damage is discovered, contact Pentek immediately at (201) 818−5900.
Please save the shipping container and packing material in case reshipment is required.
Figure 2−1 illustrates the Model 78741 assembly, with the 71741 XMC module mounted
onto the PCIe carrier.
Note that a cooling assembly/heat sink may be mounted on the 78741 assembly as
shipped from the factory.
SER RX
SER TX
GPIO
Power
Fan Power
PCIe Connectors
Cooling Assembly
XMC Module
X
MC Switches
Carrier Jumpers
Carrier Switches
Figure 2−1: Model 78741 Assembly

Page 10 Pentek Model 78741 Installation Manual
Rev.: 2.5
2.2 Jumper and Switch Settings
The following sections describe user operating parameters that are set by shorting
jumpers or DIP switches on the Model 78741.
The shorting jumpers used on the Model 78741 are for 0.020" (0.51 mm) square pins
spaced on 0.079" (2.00 mm) centers. These jumpers are NorComp part number 810−
002−LP1R001, or equivalent. Pentek’s part number for these jumpers is 356.00015.
The Model 78741 includes one Pentek 71741 XMC module mounted on a Pentek Model
7807 XMC to PCI Express (PCIe) carrier as illustrated in Figure 2−1 on the prior page.
As shipped, the 71741 XMC module is mounted onto the PCIe carrier.
As shipped from the factory, all jumpers and DIP switches are installed in default posi−
tions on your board. The default operating parameters selected may or may not meet
your requirements. Before installing your Model 78741, please review the following
sections to determine whether you need to change any of these settings.
Refer to Section 2.4 for the switch settings on the Model 71741 PCB. All switch
blocks are accessible in this shipped configuration. Refer to Section 2.6 for the
jumper settings and Section 2.7 for the switch settings on the carrier PCB.
All switch blocks are accessible in the shipped configuration. If you need to access
certain jumpers on the PCIe carrier, you must first remove the XMC module from
the PCIe carrier, as described in Section 2.3.
Note
Do not change jumpers or switches that are not described in this chapter—
those are reserved for factory test and setup purposes only.

Pentek Model 78741 Installation Manual Page 11
Rev.: 2.5
2.3 Removing XMC Module from PCIe Carrier
1) From the solder side of the Model 78741 assembly (side opposite the 71741 XMC),
unscrew the four pan−head Phillips mounting screws, as identified below.
2) From the XMC module side, GENTLY, pull on the XMC card to disengage the card’s
connectors from the PCIe carrier’s XMC connectors.
After jumper or switch changes, replace the XMC onto the PCIe carrier as follows.
1) Position the 71741 XMC module’s front panel into the PCIe carrier’s panel opening
from behind the PCIe carrier slot panel, and align the XMC module so that the
connectors on the XMC card are aligned over the connectors on the PCIe carrier.
2) GENTLY but firmly, press down on the areas of the XMC opposite the connectors to
fully seat the card’s connectors into the carrier. The connectors on the XMC should
connect smoothly with the corresponding connectors on the carrier.
3) From the solder side of the PCIe carrier, secure the XMC to the carrier by screwing the
four pan−head Phillips mounting screws (those removed above) through the PCIe
carrier into the XMC module.
CAUTION
Perform all steps at a static−controlled work workstation.
D5
D4
D3
D6
X
MC
Module
XMC
Mounting
Screws
Cooling
A
ssembly
Figure 2−2: Removing 71741 XMC from PCIe Carrier

Page 12 Pentek Model 78741 Installation Manual
Rev.: 2.5
2.4 XMC Module Switches
The following sections describe user operating parameters that are set by the DIP
switch, identified as SW1 on the 71741 main PCB (Pentek part number 320−71700). As
shipped from the factory, all switches are set for the configuration shipped. The oper−
ating parameters they select may or may not meet your requirements. Before installing
your Model 78741 assembly, please review the following subsections to determine
whether you need to change any of these settings.
Switch block SW1 is located on the solder side of the 71741 PCB and is accessible while
the 71741 is mounted onto the PCIe carrier. An assembly drawing of the solder side of
the main PCB is provided below, showing the location of SW1 on the PCB.
Note that several user LEDs are located on the solder side of the 71741 main PCB. Refer
to Section 2.5, on page 14 for description of these LEDs.
CAUTION
Use ballpoint tip only for setting DIP switches.
DO NOT USE paper clips, tweezers, or any other sharp
objects, as they may damage the switch.
Figure 2−3: Model 71741 XMC PCB Assembly Drawing, Solder Side
Switch S 1
W

Pentek Model 78741 Installation Manual Page 13
Rev.: 2.5
2.4 XMC Module Switches (continued)
Switch SW1 provides user control over the FPGA MGT clocks used for the XMC inter−
face. The following table shows the settings for this switch.
Model 78741 is shipped with a default FPGA configuration on FLASH memory, which
is loaded at power−up. Up to four FPGA configurations can be stored in FLASH, iden−
tified as Version 0, Version 1, Version 2, and Version 3. The default FPGA configuration
is located in the Version 0 space. The other three positions are empty. The board is
shipped with the FPGA configuration SW (SW1-2) set to ON, which sets the board’s
maximum speed to Gen 3. However, the board can negotiate down to Gen 2 or Gen 1
x4, as needed. Note that Gen 3 requires about 2 watts power more than Gen 2.
Table 2−1: SW1 −FPGA Configuration
Switch Function ON OFF
SW1−1FLASH Memory Write Protect/Write Enable Write Protected * Write Enabled
SW1−2PLX PCIe Switch Maximum Speed Select Max. Speed = Gen 3* Max. Speed = Gen 2
SW1−3Select Boot Configuration at power on See Table 2−2below
SW1−4
SW1−5PCIe Clock Select XMC P15 Clock * Oscillator
SW1−6P16 Clock Select XMC P16 Clock * Oscillator
SW1−7JTAG Source Select XMC JTAG* Board JTAG
SW1−8GateXpress JTAG Bypass (Factory Use Only)a
a.SW1−8(factory use only) selects whether all JTAG-linked components on the board are inserted into the JTAG
chain or whether only the Virtex-7 is in the JTAG chain. Only the Virtex-7 can be user modified. Customers
should maintain the factory setting of “bypassed”. When not bypassed, JTAG activity may affect the PCIe link.
Not Bypassed Bypassed *
SW1−9GateXpress Disable S6 is Disabled S6 is Enabled *
SW1−10 Spare
* Factory Default Settings
Note: For Model 78741, JTAG Source Select will be set to ON (XMC JTAG) by default.
Table 2−2: FPGA Configuration Select −Switches SW1−3:4
SW1−3SW1−4Configuration Select (FLASH)
ON * ON * Version 0 Boot Code −Gen 3 x8 PCIe
OFF ON Version 1 Boot Code
ON OFF Version 2 Boot Code
OFF OFF Version 3 Boot Code
* Factory Default Setting
See Model 71741 Operating Manual for description of FLASH Memory use.

Page 14 Pentek Model 78741 Installation Manual
Rev.: 2.5
2.5 XMC Module LEDs
The following describes the Model 71741 PCB LEDs, labeled Dnn, that provide general
operating status for the board. These LEDs are positioned on the solder side of the
Model 71741 main PCB, as shown in Figure 2−4 below, and are visible through the
heat−sink mounted on the PCB.
The use of each LED is indicted in Table 2−3 below.
Switch S 1
W
D11
D10 D9
D8
D7
D6
D24
D5
D38
D30
D29
D25
D26 D25
D27
D28
D23
D40
D39
D41
D31
D34
D33
D32
D37
D36 D35
D21
D20
D22
D12
D15
D19 D18
D17
Figure 2−4: Model 71741 Main PCB, Solder Side LEDs

Pentek Model 78741 Installation Manual Page 15
Rev.: 2.5
2.5 XMC Module LEDs (continued)
Table 2−3: XMC PCB LED Use
LED USE
D5 Blue indicates PCIe PORT0 is functioning (host port).
D6 Blue indicates PCIe PORT1 is functioning (Virtex−7 to GateXpress).
D7 Not used.
D8 Not used.
D9 Not used.
D10 Blue indicates PCIe PORT5 is functioning (x1 Gen1 GateXpress only).
D11 Not used.
D12 Red LED indicates a 1.0 V power failure (LED is off if power is OK).
D15 Red LED indicates a 3.6 V power failure (LED is off if power is OK).
D17 Red LED indicates a 1.5 V power failure (LED is off if power is OK).
D18 Red LED indicates a 1.8 V power failure (LED is off if power is OK).
D19 Red LED indicates a 2.5 V power failure (LED is off if power is OK).
D20 Red LED indicates a Serializer/Deserializer (SerDes) power failure (LED is off if power is OK).
D21 Red LED indicates a 6.0 V power failure (LED is off if power is OK).
D22 Red LED indicates a 0.75 V power failure (LED is off if power is OK).
D23 Green LED indicates GateXpress operation.
D24 Red LED indicates GateXpress initialization.
D25 Green LED indicates Virtex−7 operation.
D26 Red LED indicates Virtex−7 initialization.
D27 Blue LED indicates GateXpress link has been established.
D28 Blue LED indicates Virtex−7 link has been established.
D29 &
D30 Yellow LEDs indicate Virtex−7 active lanes
(LED0 = D29 and LED1 = D30):
D31 Blue LED indicates that the P16 link has been established.
D32 Blue LED indicates the user−selected signal source is functioning.
D33 Red LED indicates a system monitor alarm.
D34 Red LED indicates a temperature alarm.
D35 Blue LED indicates that the CDC VCXO is OK.
D36 Blue LED indicates that the CDC is locked.
D37 Blue LED indicates that the DCD reference clock is OK.
D38 Orange LED indicates PCIe link power alarm.
D39 Blue LED indicates PCIe link power on.
D40 Red LED indicates PCIe link fatal error.
D41 Orange LED indicates PCIe link interrupt A.
x1 x2 x4 x8
D29 Off On Off On
D30 Off Off On On

Page 16 Pentek Model 78741 Installation Manual
Rev.: 2.5
2.6 PCIe Carrier Jumpers
The following subsections describe user operating parameters that are set by shorting
jumpers on the 7807 carrier PCB. As shipped from the factory, several jumpers on the
carrier PCB are installed in default positions on your board. These jumpers have been
factory set for the configuration shipped. The default operating parameters they select
may or may not meet your requirements. Before installing your 78741 assembly onto a
PCIe baseboard, review the following subsections to determine whether you need to
change any of these settings.
The shorting jumpers used on the 7807 PCB are for 0.020" (0.51 mm) square pins spaced
on 0.079" (2.00 mm) centers. These jumpers are NorComp part number 810−002−
LP1R001, or equivalent. Pentek’s part number for these jumpers is 356.00015.
The following shows the location of all jumpers and switches on the connector side of
7807 carrier PCB. See Table 2−4 on the next page for description of these jumper blocks.
Refer to Section 2.7 for the switch settings on the carrier PCB.
XMC
Site
Cooling
Area
J23
J15
J16 J14
J22
J19
J18
J20
J21 J5
J8
1
3
1
3
1
3
1
3
1
3
SW1
J4
1
Figure 2−5: Model 7807 PCIe Carrier PCB Connector Side −Jumpers & Switches
SW1
J22
J19
J18
J20
J21
J4

Pentek Model 78741 Installation Manual Page 17
Rev.: 2.5
2.6 PCIe Carrier Jumpers (continued)
Jumper blocks J18, J19, J20, J21, and J22 (shown in Figure 2−5) select the signal
source for JTAG operation, from either the carrier’s J4 JTAG connector (Section 2.9.2)
or the carrier’s PCIe connector. The following table shows the jumper settings.
Table 2−4: JTAG Signal Select −Jumper Blocks J18, J19, J20, J21, J22
Jumper Block JTAG Signal Jumper Pins Signal Source
J18 TMS (Test
Mode Select) Pins 1 −3 * Use JTAG J4 connector TMS
Pins 2 −4 Use PCIE connector TMS
J19 TCK (Test
Clock) Pins 1 −3 * Use JTAG J4 connector TCK
Pins 2 −4 Use PCIE connector TCK
J20 TDI(TestData
In) Pins 1 −3 * Use JTAG J4 connector TDI
Pins 2 −4 Use PCIE connector TDI
J21 TDO (Test
Data Out) Pins 1 −3 * Use JTAG J4 connector TDO
Pins 2 −4 Use PCIE connector TDO
J22 TRST (Test
Reset) Pins 1 −3 Use JTAG J4 connector TRST_N
Pins 2 −4 * Use PCIe connector PERST_N
* Factory Default Setting −For proper JTAG operation, all jumpers
should be set to 1−3 except J22, which should be set to 2−4.
Note
The user should not change jumpers that are not described in these pages—
these are reserved for factory test and setup purposes only.

Page 18 Pentek Model 78741 Installation Manual
Rev.: 2.5
2.7 PCIe Carrier Switches
This section describes operating parameters that are set by DIP switches on the Model
7807 carrier PCB. See Figure 2−5 on page 16 for location of these switches on the PCB.
Refer to Section 2.6 for the jumper settings on the carrier PCB.
As shipped from the factory, all switches on the carrier PCB have been factory set for
the configuration shipped. The default parameters they select may or may not meet
your requirements. Before installing your 78741 assembly onto a PCIe baseboard,
review Table 2−5 to determine whether you need to change any of these settings.
Switch SW1 selects XMC interface modes for the XMC module. Table 2−5 describes the
different mode selections for each switch position.
Table 2−5: XMC Modes −Switch SW1
Switch OFF Function ON Function Description
SW1−1GA0 is pulled to 3.3V on
the XMC connector * Ties GA0 to GND on the XMC connector Sets bit 0 of the XMC onboard EEPROM base address
SW1−2GA1 is pulled to 3.3V on
the XMC connector * Ties GA1 to GND on the XMC connector Sets bit 1 of the XMC onboard EEPROM base address
SW1−3GA2 is pulled to 3.3V on
the XMC connector * Ties GA2 to GND on the XMC connector Sets bit 2 of the XMC onboard EEPROM base address
SW1−4MVMRO is pulled to 3.3V
on the XMC connector * Ties MVMRO on the XMC connector to GND
When MVMRO is pulled high to 3.3V,
the XMC onboard EEPROM cannot
be written to.
SW1−5ROOT0 is pulled to 3.3V
on the XMC connector * Ties ROOT0 on the XMC connector to GND
When ROOT0 is pulled to GND, the
XMC card can function as a root
complex and assign base addresses
to other devices on the PCI express
and PCI buses
SW1−6Not used
SW1−7Not used
SW1−8Not used
* Factory Default Setting −all Switches OFF

Pentek Model 78741 Installation Manual Page 19
Rev.: 2.5
2.8 PCIe Carrier LEDs
The following paragraphs describe the LEDs, labeled Dnn on the solder side of the 7807
carrier PCB, that indicate power operating status for the board.
The following green LEDs indicate power applied to board resources.
LED USE
D3 Green LED indicates the presence of +12V at the 6−pin PCIe Power Connector (J23)
D4 Green LED indicates the presence of +3.3V from the PCIe bus (motherboard)
D5 Green LED indicates the presence of +3.3V from the onboard Power Supply
D6 Green LED indicates the presence of +12V after the Fuse F1 *
* If D3 is illuminated and D6 is not, this indicates the fuse F1 is blown.
D5
D4
D3
D6
Figure 2−6: Model 7807 PCIe Carrier PCB Solder Side, LEDs
D5
D4
D3
D6

Page 20 Pentek Model 78741 Installation Manual
Rev.: 2.5
2.9 PCIe Carrier Connectors
The following subsections describe the power and signal connectors on the 7807 PCIe
carrier. Refer to Figures 2−1 and 2−5 for location of the connectors on the PCB.
2.9.1 Power Connector
The PCIe carrier uses a 6−pin power connector,
labeled J23, to supply +12V power to the XMC mod−
ule. This is a standard PCI Express power connector
used in PCs with a PCI Express bus.
Pins 1, 2, and 3 are +12 VDC
Pins 4, 5, and 6 are ground
NOTE: You must provide a power source to this
connector or the XMC module will not operate.
Pentek includes a PCIe to Molex adapter cable (part # 002.21790)
with the Model 78741 shipment.
2.9.2 JTAG Connector
The JTAG J4 connector (shown in Figure 2−5) provides a connection to
download programs and to perform boundary−scan tests on PCIe carrier
devices. The pinout for this 14−pin header is given in the following table.
2.9.3 Fan Connector
Connector J8 on the PCIe carrier PCB provides a +12VDC power source for
use by the cooling fan.
Table 2−6: JTAG J4 Connector
Signal Pin Number Pin Number Signal
Gnd 1 2 +3.3 V
Gnd 3 4 TMS
Gnd 5 6 TCK
Gnd 7 8 TDO
Gnd 9 10 TDI
Gnd 11 12 TRST_N
Gnd 13 14 No Connection
1
3
5
7
9
11
13
2
4
6
8
10
12
14