Datasheet

5-24

AS1020P-T(R)/1020P-8(R) User's Manual

5-12 Floppy, IDE, SCSI and SATA Drive Connections

Note the following when connecting the ﬂ oppy and hard disk drive cables:

• The ﬂ oppy disk drive cable has seven twisted wires.

• A red mark on a wire typically designates the location of pin 1.

• A single ﬂ oppy disk drive ribbon cable has 34 wires and two connectors to provide

for two ﬂ oppy disk drives. The connector with twisted wires always connects to

drive A, and the connector that does not have twisted wires always connects to

drive B.

Floppy Drive Connector

Pin Deﬁ nitions (JFDD1)

Pin# Deﬁ nition Pin # Deﬁ nition

1 GND 2 FDHDIN

3 GND 4 Reserved

5 Key 6 FDEDIN

7 GND 8 Index-

9 GND 10 Motor Enable

11 GND 12 Drive Select B-

13 GND 14 Drive Select A-

15 GND 16 Motor Enable

17 GND 18 DIR-

19 GND 20 STEP-

21 GND 22 Write Data-

23 GND 24 Write Gate-

25 GND 26 Track 00-

27 GND 28 Write Protect-

29 GND 30 Read Data-

31 GND 32 Side 1 Select-

33 GND 34 Diskette

Floppy Connector

The ﬂ oppy connector is located

beside the IDE#1 connector.

See the table on the right for

pin deﬁ nitions.