Hard disk connector – Multi-Tech Systems Hub User Manual
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CommPlete 4000 Communications Server User Guide
Appendices
Hard Disk Connector
This connector supplies hard disk drive signals which interface with the software I/O drivers to
provide the read/write functions.
40
1
2
39
Figure A-7. Hard Disk Connector
Pin Description
Pin
Description
1
/Reset
21
NC
2
Ground (GND)
22
Ground (GND)
3
Data Bit 7 (SD7)
23
-I/O Write (-IOW)
4
Data Bit 8 (SD8)
24
Ground (GND)
5
Data Bit 6 (SD6)
25
-I/O Read (-IOR)
6
Data Bit 9 (SD9)
26
Ground (GND)
7
Data Bit 5 (SD5)
27
IOCHRDY
8
Data Bit 10 (SD10)
28
ALE\
9
Data Bit 4 (SD4)
29
NC
10
Data Bit 11 (SD11)
30
Ground (GND)
11
Data Bit 3 (SD3)
31
IRQ14
12
Data Bit 12 (SD12)
32
/IOCS16
13
Data Bit 2 (SD2)
33
Address Bit 1 (SA1)
14
Data Bit 13 (SD13)
34
NC
15
Data Bit 1 (SD1)
35
Address Bit 0 (SA0)
16
Data Bit 14 (SD14)
36
Address Bit 2 (SA2)
17
Data Bit 0 (SD0)
37
Chip Select 0 (-CS0)
18
Data Bit 15 (SD15)
38
Chip Select 1 (-CS1)
19
Ground (GND)
39
/HDLED
20
NC
40
Ground (GND)