Model 52791 Getting Started Guide
Page 5
Before You Begin:
Jumper and Switch Settings
As shipped from the factory, all jumpers and switches are set in default positions on the
Pentek Model 52791. The default operating parameters they select may or may not meet
your requirements. Therefore, consider the following before installation:
Pentek Model 71791 XMC Module Switch SW1
−
FPGA Configuration
When you install Model 52791, you may need to set DIP switch
SW1
on the 71791 XMC
module (which controls FPGA configuration) based on the characteristics of your host
bus. Therefore, you will need to consider the following before you begin installation:
• FLASH memory write protect/write enable
• PLX PCIe switch maximum speed select
• Select boot configuration at power on
• PCIe clock select
• P16 clock select
• JTAG source select
• GateXpress
®
disable (GateXpress is the FPGA
−
PCIe configuration manager for
loading and reloading the FPGA)
For example, Switch
SW1
−
2
allows you to change the maximum speed of the PLX PCIe
switch from Gen 3 (the factory default) to Gen 2.
NOTE:
The Model 71791 XMC module is shipped to boot with the Gen 3 x8 PCIe
default FPGA code. The Model 5201 VPX carrier limits the default of the
Model 52791 to Gen 3 x4.
To preview the DIP switch settings you’ll need to make, refer to Section 2.4 of the
Model
52791 Installation Manual
.
Pentek Model 5201 VPX Carrier Jumpers
XMC JTAG:
Jumper block
JB1
includes or bypasses the 71791 XMC as part of the
JTAG chain from the Pentek JTAG connector (
J5
).
XMC Reset Source
: Jumper block
JB3
selects the source of the reset signal sent to the
XMC interface (VPX SYSRESET or Board Power On).
XMC MVMRO
: Jumper block
JB4
enables/disables MVMRO (XMC Write Prohibit)
for the XMC interface.
To preview the jumper settings you’ll need to consider for the 5201 carrier PCB, refer to
Section 2.6 of the
Model 52791 Installation Manual.
NOTE:
To access all jumpers, you must remove the XMC module from the VPX
carrier, as described in Section 2.3 of the
Model 52791 Installation Manual
.
