Connections
CB1067
30
Version: 1.0
5.18
PCI-Express interfaces x4 (P1305 and P1302)
Two PCI-Express x4 expansion card slots are available on the CB1067 board. x1 expansion cards can also
be operated in these slots.
Fig. 19: PCIe x4 connector
Pin assignment of PCI-Express x4 connector
Description
Name
Pin
Name
Description
Hot Plug Detect 1
PRSNT1#
A1
B1
12 V
12 V supply voltage
12 V supply voltage
12 V
A2
B2
12 V
12 V supply voltage
12 V supply voltage
12 V
A3
B3
RSVD
Not connected
Ground
GND
A4
B4
GND
Ground
Not connected
TCK
A5
B5
SMBCLK
SMBus Clock PCIe
Not connected
TDI
A6
B6
SMBDAT
SMBus Data PCIe
Not connected
TDO
A7
B7
GND
Ground
Not connected
TMS
A8
B8
3.3 V
3.3 V supply voltage
3.3 V supply voltage
3.3 V
A9
B9
TRST
Not connected
3.3 V supply voltage
3.3 V
A10
B10
S3.3V
Standby voltage 3.3 V
PCIe Reset
PERST#
A11
B11
PEWAKE# Link Reactivation
Ground
GND
A12
B12
RSVD
Reserved
Reference Clock +
REFCLK
A13
B13
GND
Ground
Reference Clock -
REFCLK#
A14
B14
PET0
Transmit Lane 0 +
Ground
GND
A15
B15
PET0#
Transmit Lane 0 -
Receive Lane 0 +
PER0
A16
B16
GND
Ground
Receive Lane 0 -
PER0#
A17
B17
PRSNT2#
Hot Plug Detect 2
Ground
GND
A18
B18
GND
Ground
Not connected
RSVD
A19
B19
PET1
Transmit Lane 1 +
Ground
GND
A20
B20
PET1#
Transmit Lane 1 -
Receive Lane 1 +
PER1
A21
B21
GND
Ground
Receive Lane 1 -
PER1#
A22
B22
GND
Ground
Ground
GND
A23
B23
PET2
Transmit Lane 2 +
Ground
GND
A24
B24
PET2#
Transmit Lane 2 -
Receive Lane 2 +
PER2
A25
B25
GND
Ground
Receive Lane 2 -
PER2#
A26
B26
GND
Ground
Ground
GND
A27
B27
PET3
Transmit Lane 3 +
Ground
GND
A28
B28
PET3#
Transmit Lane 3 -
Receive Lane 3 +
PER3
A29
B29
GND
Ground
Receive Lane 3 -
PER3#
A30
B30
RSVD
Not connected
Ground
GND
A31
B31
PRSNT2#
Hot Plug Detect 2
Not connected
RSVD
A32
B32
GND
Ground
