Check that the shunts are at the following
positions as shown in
Table 2-10.
Table 2-10 Pin Mode Shunt
Configuration
| SHNT# |
HEADER |
SHUNT ACROSS
PINS |
| 1 |
J1 - J4 |
1-2 |
| 2 |
JMP7 |
1-2 |
| 3 |
JMP8 |
2-3 |
| 4 |
JMP17 |
2-3 |
| 5 |
JMP18 |
2-3 |
| 6 |
JMP19 |
2-3 |
| 7 |
J17 |
1-2, 3-4 |
| 8 |
J18 |
1-2, 3-4 |
| 9 |
J19 |
1-2, 3-4 |
| 10 |
J20 |
1-2, 3-4 |
| 11 |
J21 |
1-2, 3-4 |
| 12 |
JMP1 |
1-2 |
| 13 |
JMP2 |
3-4 |
| 14 |
JMP3 |
1-2 |
| 15 |
J30 |
N/C |
| 16 |
J23 |
N/C |
| 17 |
JMP4 |
1-2 |
| 18 |
JMP5 |
3-4 |
| 19 |
JMP6 |
1-2 |
| 20 |
J24 |
N/C |
| 21 |
J25 |
N/C |
| 22 |
JMP9 |
1-2 |
| 23 |
JMP10 |
3-4 |
| 24 |
JMP11 |
1-2 |
| 25 |
J26 |
N/C |
| 26 |
J27 |
N/C |
| 27 |
JMP14 |
1-2 |
| 28 |
JMP15 |
3-4 |
| 29 |
JMP16 |
1-2 |
| 30 |
J28 |
N/A |
| 31 |
J29 |
N/A |
The redrivers are configured
to operate in Pin Mode (MODE pins tied to L0).
- RX_Detect state machine of all redrivers is enabled by leaving
RX_DET pin open.
- The redrivers are enabled (PWDN pins tied to GND).
- The board is configured for any PCIe bus width.
- DC Gain of all redrivers is set to 0 dB by leaving the GAIN
config pin open for the redrivers.
- EQ level is set to CTLE index 5.
- If necessary, adjust EQ levels of the downstream and upstream
redrivers.
- Plug the EVM into a PCIe x16 server motherboard slot. Ensure
the motherboard is powered down before installing the EVM or configured for
hot-plug operation.
- Install a compatible PCIe endpoint card into one of the PCIe
connectors on the EVM based on configuration of the SEL pin. Note: PCIe-A
requires enabling bifurcation on the motherboard.
- Power-up the motherboard.