Floppy disk interface, Audio input connector (j4) pinouts – Adaptec AMM-1572 User Manual
Page 79
A-7
Specifications
AMM-1570/1572 User’s Guide
Stock Number: 510526-00, Rev. B
Page: A-7
Print Spec Number: 492379-00
Current Date: 3/7/94
ECN Date: 3/8/94
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Floppy Disk Interface
Standard Electronic and Physical Interface
Connector
The floppy disk interface connector should be an unshrouded 34-pin
header.
Audio Input Connector (J4) Pinouts
The pinouts for J4 are as follows:
❒
Driver Output Signals:
V
OL
0 volts minimum, 0.5 volts maximum
V
OH
Open collector, 5.25 volts maximum
I
OL
60 mA
I
OH
0.1 mA
Receiver Input Signals:
V
T-
1.0 volts maximum
V
T+
1.4 volts minimum
Tied to +5 volt supply through 150 ohm resistors. Schmitt Trigger with
0.8-volt hysteresis.
Pin
Signal Name
1
Ground
2
Right
3
Ground
4
Left