Siemens SIMATIC Box PC 620 Manual page 173

Pin
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
Under normal conditions, the signals -SBHE, LA17 - LA23, -MEMR and MEMW
are operated as outputs (sending from the CPU). Only CPU boards which are
suitable for use as a master CPU for system bus access send and receive these
signals. A minus sign "-" in front of the signal name shows that the signal is LOW
active.
SIMATIC Box PC 620 Manual
C79000-G7076-C639-04
Signal Name Type *
–SBHE
LA 23
LA 22
LA 21
LA 20
LA 19
LA 18
LA 17
–MEMR
–MEMW
SD 08
SD 09
SD 10
SD 11
SD 12
SD 13
SD 14
SD 15
Pin Signal Name
O D1 –MEMCS16
I/O D2 –IOCS16
I/O D3 IRQ 10
I/O D4 IRQ 11
I/O D5 IRQ 12
I/O D6 IRQ 13
I/O D7 IRQ 14
I/O D8 –DACK0
I/O D9 DRQ 0
I/O D10 –DACK5
I/O D11 DRQ 5
I/O D12 –DACK6
I/O D13 DRQ 6
I/O D14 –DACK7
I/O D15 DRQ 7
I/O D16 + 5V
I/O D17 –MASTER
I/O D18 0 V
Hardware Information
Type
I
I
I
I
I
I
I
O
I
O
I
O
I
O
I
V
CC
I
GND
8-41