Table 7-1 J404: To Front Panel Jack - Hytera MD78X Service Manual

Interface Definition
Pin No.
23 KB_R2
24 CSLED
25 CLOCK
26 DATA
27 OE_LCD
28 WE_LCD
29 CS2_LCD
30 F_A1_LCD
31 F_D7
32 F_D6
33 F_D5
34 F_D4
35 F_D3
36 F_D2
37 F_D1
38 F_D0
39 GND
40 PWB_IN
J4: to aviation jack of front panel
Pin No.
1 ACC_IO1
2 PTT_IN
3 Handset_Audio
Name
Backlight control IC chip select
Backlight control IC clock
Backlight control IC data
LCD read enable
LCD write enable
LCD chip select
LCD register enable
LCD data bus
LCD data bus
Ground
Power-on/ power-off signal

Table 7-1 J404: to Front Panel Jack

Name
Digital input
Digital input
Analog output
Function
Function
24
Service Manual