PIN INFORMATION
CL-GD542X
VGA Graphics Controllers
1.4 Pin Summary
The following abbreviations are used for pin types in the following tables: (I) indicates input; (O) indicates
output; (I/O) indicates input or output depending on how the device is configured and programmed
Table 1-1. Host Interface — ISA/MicroChannel
b
Pin
Number
Pin
Type
I
Load
(pF)
OH
a
Pull-up
I
(mA)
ISA
MicroChannel
OL
(mA)
21
20
19
18
17
16
15
45
44
43
42
39
38
37
36
35
34
33
32
31
30
29
28
27
3
I
LA23
LA22
LA21
LA20
LA19
LA18
LA17
SA16
SA15
SA14
SA13
SA12
SA11
SA10
SA9
A23
A22
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
•
•
•
•
•
•
•
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
SA8
A8
I
SA7
A7
I
SA6
A6
I
SA5
A5
I
SA4
A4
I
SA3
A3
I
SA2
A2
I
SA1
A1
I
SA0
A0
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
−3
−3
−3
−3
−3
−3
−3
−3
−3
−3
−3
−3
−3
−3
12
12
12
12
12
12
12
12
12
12
12
12
12
12
240
240
240
240
240
240
240
240
240
240
240
240
240
240
SD15
SD14
SD13
SD12
SD11
SD10
SD9
D15
D14
D13
D12
D11
D10
D9
•
•
•
•
•
•
•
•
4
5
6
8
9
10
11
63
62
60
59
57
56
SD8
D8
SD7
D7
SD6
D6
SD5
D5
SD4
D4
SD3
D3
SD2
D2
May 1995
3-13
PRELIMINARY DATA BOOK v7.0
PIN INFORMATION
CIRRUS [ CIRRUS LOGIC ]
