Kontron PCI-AOB16/12, User Manual

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1-10
PCI-AOB8/12 (16/12) User’s Guide
Figure 1-1. PCI-AOB8/12 (16/12) Block Diagram
PCI
ADDRESS
DECODE
AND
BUS
INTERFACE
COMPUTER PCI BUS
+12VDC
VREF TO ALL DACS
DACSs 1-14
DAC 0
DAC 15
RESET
~0.75V
VREF
DISABLE-
OUTPUT
SWITCH
RANGE SELECT
RANGE SELECT
UPDATE DACS
12-BIT
DAC # 0
12-BIT
DAC # 15
DAC
OUTPUT
DAC
OUTPUT
OUTER
DATA
REGISTER
INNER
DATA
REGISTER
OUTER
DATA
REGISTER
INNER
DATA
REGISTER
PPI
GROUP
0
GATE
GATE
GATE
OUT
OUT
5V
1MHz OSC
OUT
INPUT
FREQUENCY INPUT
FREQUENCY OUTPUT
PULSE WIDTH INPUT
(GATE)
8254
CTR0
CTR1
CTR2
INPUT
INPUT
PCI
BUS
CONTROL
LOGIC
I/O
B
U
F
F
E
R
S
40
PIN
C
O
N
N
E
C
T
O
R
37
PIN
C
O
N
N
E
C
T
O
R
PORT A
PORT B
PORT C HI
PORT C LO