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ESDI

2 Cables:

• 34-pin Command Cable
• 20-pin Data Cable

ESDI Interface Specifications

ESDI Control Cable (J1/P1) Pin assignments

Signal pin	Ground pin	Signal name
02	01	-Head select 2(3)
04	03	-Head select 2(2)
06	05	-Write gate
08	07	-Configuration/status data
10	09	-Transfer acknowledge
12	11	-Attention
14	13	-Head select 2(0)
16	15	-Sector/byte clock/address mark found
18	17	-Head select 2(1)
20	19	-Index
22	21	-Ready
24	23	-Transfer request
26	25	-Drive select 2(0)
28	27	-Drive select 2(1)
30	29	-Drive select 2(2)
32	31	-Read gate
34	33	-Command data

ESDI Data Cable (J2/P2) Pin assignments

Signal pin	Ground pin	Signal name
01		-Drive selected
02		-Sector/byte clock/address mark found
03		-Command complete
04		-Address mark enable
	05	Ground
07/08	06	+/-Write clock
10/11	09/12	+/-Read ref* clock
13/14	15/16	+/-NRZ write data
17/18	19	+/-NRZ read data
20		-Index