User Manual
AIC 324
1.3.2. Digital Connector
Table 5: Pinout of Digital Connector (XP12)
A7
1
2
A6
A5
3
4
A4
A3
5
6
A2
A1
7
8
A0
B7
9
10
B6
B5
11
12
B4
B3
13
14
B2
B1
15
16
B0
C7
17
18
C6
C5
19
20
C4
C3
21
22
C2
C1
23
24
C0
Latch
25
26
Ack
D0
27
28
D1
D2
29
30
D3
D4
31
32
D5
+5V
33
34
DGND
Table 6: Designation of the main functional outputs of the XP12 digital connector
Name
Function
A7
– A0
Digital I/O port A
B7
– B0
Digital I/O port B
C7
– C0
Digital I/O port C
D5
– D0
Digital additional I/O port D
Latch
Latch input, active level high (port А, mode 1)
Ack
Acknowledgement output, active level high (port А, mode 1)
+5V
+5V digital power
DGND
Digital ground of PC104 bus
1.3.3 Registers Mapping
+0
W
ADC conversion software start
If ADC is not in Busy state (AD_BUSY high), writing any value to the register leads to starting ADC
conversion.
+0
R
Reading of the lower data byte from ADC
Bit #
7
6
5
4
3
2
1
0
Name
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
AD7
– 0 – ADC data from 7 to 0 bits.
+1
R
Reading of the higher data byte from ADC
Bit #
7
6
5
4
3
2
1
0
Name
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
AD15
– 8 - ADC data from 15 to 8 bits.
*When using 8-bit module access commands, higher byte should be read first, then lower byte.
+2
R\W
Lower ADC channel number in scan mode.
Bit #
7
6
5
4
3
2
1
0
