Panasonic JU-257A 3.5" 720k/1.4M FDD.

Panasonic JU-257A 720k/1.4M FDD: Interface Connector (J1)
Description 34w IDC Connector Direction
/DISK CHANGE(1) 34 OUT
Signal Ground 33 -
/SIDE SELECT 32 IN
Signal Ground 31 -
/READ DATA 30 OUT
Signal Ground 29 -
/WRITE PROTECT 28 OUT
Signal Ground 27 -
/TRACK 00 26 OUT
Signal Ground 25 -
/WRITE GATE 24 IN
Signal Ground 23 -
/WRITE DATA 22 IN
Signal Ground 21 -
/STEP 20 IN
Signal Ground 19 -
/DIRECTION SELECT 18 IN
Signal Ground 17 -
/MOTOR ON 16 IN
Signal Ground 15 -
NO CONNECTION 14 -
Signal Ground 13 -
/DRIVE SELECT 1 12 IN
Signal Ground 11 -
NO CONNECTION(2) 10 -
Signal Ground 9 -
/INDEX 8 OUT
Signal Ground 7 -
NO CONNECTION 6 -
Signal Ground 5 -
NO CONNECTION 4 -
NO CONNECTION 3 -
NO CONNECTION 2 -
Signal Ground 1 -
(1)Inverse logic to the old "/READY" signal - is LOW when the disk is NOT in the drive.
(2)Unclear from the datasheet, inferred by inspection of a similar TEAC drive and PC AT data.

Panasonic JU-257A 720k/1.4M FDD: Power Connector (J2)
+5V DC @ 0.9A Max 1
Ground (0V) 2
Ground (0V) 3
No Connection 4

Prepared by F.T. Gowen
Last modified: 26th. August, 2001


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