BECKHOFF CB1061 User Manual
Page 43
Internal Connectors
Chapter: Connectors
Beckhoff New Automation Technology CB1061
page 43
3.4.6 PCI-express Interfaces (x1)
The CB1061 board has two slots for PCIe-x1 expansion cards.
N
OTE
When the motherboard PCIe-x4 slot (page 44) is occupied with a x4 device, then x1 slot 2 is de-activated.
N
OTE
Please note that some signals in the following table are different from one PCIe slot to the other. This
applies to the clock signals (A13, A14), the receive signals (A16, A17), and the transmit signals (B14,
B15).
Pinout PCI-express-x1 connector:
Description
Name
Pin
Name
Description
hot plug detect 1
PRSNT1#
A1
B1
12V
12 volt supply
12 volt supply
12V
A2
B2
12V
12 volt supply
12 volt supply
12V
A3
B3
N/C
reserved
ground
GND
A4
B4
GND
ground
reserved
N/C
A5
B5
SMBCLK
SMBus clock PCIe
reserved
N/C
A6
B6
SMBDAT
SMBus data PCIe
reserved
N/C
A7
B7
GND
ground
reserved
N/C
A8
B8
3.3V
3.3 volt supply
3.3 volt supply
3.3V
A9
B9
N/C
reserved
3.3 volt supply
3.3V
A10
B10
S3.3V
3.3V standby-supply
PCIe reset
PERST#
A11
B11
PEWAKE#
link reactivation
ground
GND
A12
B12
N/C
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