One Stop Systems
OSS-KIT-EXP-2050| 12
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
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
