User Manual

One Stop Systems
OSS-KIT-EXP-6002| 10
4.3 Pin-out for the PCIe x4 Card Edge Connector on the “Host Cable Adapter”
Pin
#
Side B Side A
Name Description Name Description
1 N/C N/C PRSNT1# Hot-Plug presence detect
2 N/C N/C N/C N/C
3 N/C N/C N/C N/C
4 GND Ground GND Ground
5 NC N/C N/C Not connected
6 N/C N/C JTAG3 TDI (Test Data Input)
7 GND Ground JTAG4 TDO (Test Data Output)
8 +3.3V 3.3 V power N/C Not connected
9 N/C Not connected N/C Not connected
10 3.3Vaux 3.3 V auxiliary power +3.3V 3.3 V power
11 N/C N/C PERST# Fundamental reset
Mechanical key
12 RSVD Reserved GND Ground
13 GND Ground REFCLK+ Reference clock (differential pair)
14 PETp0 Transmitter differential pair, Lane 0 REFCLK
15 PETn0 GND Ground
16 GND Ground PERp0 Receiver differential pair, Lane 0
17 PRSNT2# Hot-Plug presence detect PERn0
18 GND Ground GND Ground
19 PETp1 Transmitter differential pair, Lane 1 RSVD Reserved
20 PETn1 GND Ground
21 GND Ground PERp1 Receiver differential pair, Lane 1
22 GND Ground PERn1
23 PETp2 Transmitter differential pair, Lane 2 GND Ground
24 PETn2 GND Ground
25 GND Ground PERp2 Receiver differential pair, Lane 2
26 GND Ground PERn2
27 PETp3 Transmitter differential pair, Lane 3 GND Ground
28 PETn3 GND Ground
29 GND Ground PERp3 Receiver differential pair, Lane 3
30 RSVD Reserved PERn3
31 PRSNT2# Hot-Plug presence detect GND Ground
32 GND Ground RSVD Reserved
Notes:
1. Optional signals that are not implemented are left as no connects on the board side connector.
2. Reserved signals are no connects on the board side connector.
3. Although support of CWAKE# is optional from the board side connector perspective, an allocated wire is mandated for the cable
assembly.