Beckhoff CB2051 Manual do Utilizador descarregar pdf (Página 16)

Chapter: Connectors PISA Slot

page 16 Beckhoff New Automation Technology CB2051

3.4 PISA Slot

The CB2051 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 CB2051 currently supports only PCI.

NOTE

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

IO channel check IOCHK# A1 B1 GND ground

system data 7 SD7 A2 B2 RSTDRV reset drive

system data 6 SD6 A3 B3 VCC 5 volt supply

system data 5 SD5 A4 B4 IRQ9 interrupt request 9

system data 4 SD4 A5 B5 -5V -5 volt

system data 3 SD3 A6 B6 DRQ2 DMA request 2

system data 2 SD2 A7 B7 -12V -12 volt supply

system data 1 SD1 A8 B8 WS0# wait state 0

system data 0 SD0 A9 B9 12V 12 volt supply

IO channel ready IOCHRDY A10 B10 GND ground

address enable AEN A11 B11 SMEMW# memory write below 1MB

system address 19 SA19 A12 B12 SMEMR# memory read below 1MB

system address 18 SA18 A13 B13 IOW# IO write

system address 17 SA17 A14 B14 IOR# IO read

system address 16 SA16 A15 B15 DACK3# DMA acknowledge 3

system address 15 SA15 A16 B16 DRQ3 DMA request 3

system address 14 SA14 A17 B17 DACK1# DMA acknowledge 1

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 76 77

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