Audio Port; Audio Port Pin-Outs - Digital Equipment 300 Series AXP Reference Manual

Audio Port

Audio Port
Pin Layout The following figure shows the pin layout for the audio port.
Table C–4 describes pin usage for the audio port.
Pin-Outs
Table C–4 Audio Port Pin-outs
Pin Number
1
2
3
4
This port is pin-compatible with a telephone handset.
C–6
4 1
Description
Audio in A
Earphone interface 1 (audio out)
Earphone interface 2 (audio out return)
Audio input B (ground)