Portwell PCI-DIO-48, User Manual

Page: 8 / 23

PCI
BUS
CONTROL
LOGIC
INTERRUPT
ENABLE
PPI
GROUP
1
PPI
GROUP
0
CHANGE
OF
STATE
DETECT
CHANGE
OF
STATE
DETECT
CHANGE
OF
STATE
INTERRUPT
APPLIES TO “S”
CARDS ONLY
CHANGE OF STATE INTERRUPT
EXTERNAL INTERRUPT
CO
M
P
UT
E
R
PCI
BUS
I/O
B
U
F
F
E
R
S
C
O
N
N
E
C
T
O
R
C
O
N
N
E
C
T
O
R
PORT A
PORT B
PORT C HI
PORT C LO
PORT A
PORT B
PORT C HI
PORT C LO
Figure 1-1: Block Diagram
Manual PCI-DIO-48(S) 8