PISA Slot
Chapter:
Connectors
Beckhoff New Automation Technology
CB2050
page 19
3.4 PISA Slot
The CB2050 module requires a backplane board in which it is inserted using the PISA slot. This slot
combines PCI and ISA signals in one single connector which is useful in situations where limited space is
an issue. The CB2050 currently supports only PCI.
N
OTE
Please note the unusual pin numbering scheme of the PISA slot. There is an "up row" (for ISA signals) and
a "low row" (for PCI signals). The former is divided into segments A through D while the latter is divided into
segments E through H (cf. the illustration above).
Pinout "up row":
Description
Name
Pin
Name
Description
reserved
N/C
A1
B1
GND
ground
reserved
N/C
A2
B2
N/C
reserved
reserved
N/C
A3
B3
VCC
5 volt supply
reserved
N/C
A4
B4
N/C
reserved
reserved
N/C
A5
B5
-5V
-5 volt supply
reserved
N/C
A6
B6
N/C
reserved
reserved
N/C
A7
B7
-12V
-12 volt supply
reserved
N/C
A8
B8
N/C
reserved
reserved
N/C
A9
B9
12V
12 volt supply
reserved
N/C
A10
B10
GND
ground
reserved
N/C
A11
B11
N/C
reserved
reserved
N/C
A12
B12
N/C
reserved
reserved
N/C
A13
B13
N/C
reserved
reserved
N/C
A14
B14
N/C
reserved
reserved
N/C
A15
B15
N/C
reserved
reserved
N/C
A16
B16
N/C
reserved
reserved
N/C
A17
B17
N/C
reserved