Hytera MD78X Service Manual page 40

Service Manual
Pin No. Name
2 Ground
3 GP5_3
4 SW B+ sense
5 External Alarm
6 Power Ground
7 Tx Audio
8 RX Audio
9 Spkr-
10 D+ USB
11 USB_GROUDN
12 GP5_2
13 ACC_IO2
14 Emerg Sw
15 ACC_IO3
16 PRGM_IN_PTT
17 Audio Ground
18 Spkr+
19 D- USB
20 GP5_8
21 Ground
22 GP5_7
23 GP5_6
24 AUX Audio Out 1
25 AUX Audio Out 2
Ground
Digital input/output
Power supply
Analog voltage output
Power supply ground
Analog input
Analog output
Analog output
USB data cable +
Ground
Digital input/output
Digital input
Digital input
Digital input
Digital input
Audio ground
Analog output
USB data cable -
Input/output
Ground
Input/output
Digital input/output
Analog output
Analog output
27
Function
Interface Definition