Eide Hard Drive Connectors; Table 3-11. Eide Connector Pin Assignments - Motorola CPV5000 Installation And Reference Manual

EIDE hard drive connectors

Up to four Enhanced Integrated Drive Electronics (EIDE) hard disk drives can
be attached to the CPV5000.
Note

Table 3-11. EIDE connector pin assignments

Pin Signal
Number Mnemonic
1 RESET-
2 GND
3 DD7
4 DD8
5 DD6
6 DD9
7 DD5
8 DD10
9 DD4
10 DD11
11 DD3
12 DD12
13 DD2
14 DD13
15 DD1
The red stripe on the 40-pin EIDE ribbon cable should be
near pins 1 and 2 on the 40-pin connector. The CPV5000 and
EIDE hard drive(s) will not work correctly if the cable is
plugged in backwards. EIDE cables should be no more than
18 inches (46 cm) long.
Signal Description Pin
Number
Reset signal to drive
Ground
Data Bus Bit 7
Data Bus Bit 8
Data Bus Bit 6
Data Bus Bit 9
Data Bus Bit 5
Data Bus Bit 10
Data Bus Bit 4
Data Bus Bit 11
Data Bus Bit 3
Data Bus Bit 12
Data Bus Bit 2
Data Bus Bit 13
Data Bus Bit 1
EIDE hard drive connectors
Signal Signal Description
Mnemonic
23 IOW- Drive I/O write
24 GND Ground
25 IOR- Drive I/O read
26 GND Ground
27 IORDY IDE I/O channel ready
28 NC Not connected
29 DMACK- Drive DMA acknowledge
30 GND Ground
31 IRQ
32 IOCS16- 16 bit register has been
decoded
33 DA1 Address bus bit 1
34 PDIAG- Output from drive 1 &
monitored by drive 0
35 DA0 Address bus bit 0
36 DA2 Address bus bit 2
37 CS1- Chip select drive 0, also
command register block
select
3
3-17