HYT TC-780 Service Manual page 18

No. Port Name
84 P02/D2
85 P01/D1
86 P00/D0
87 P107/AN7
88 P106/AN6
89 P105/AN5
90 P104/AN4
91 P103/AN3
92 P102/AN2
93 P101/AN1
94 AVSS
95 P100/AN0
96 VREF
97 AVCC
98 P97
99 P96
100 P95
Pin Name
PTT
AK2346B_DIR
AK2346B_DATA
NC
OPTION1
VOX
BATT
BATTSEL
RSSI
SQL
GND
CTC_IN
VCC
VCC
NC
LCM_RST
LCM_CD
I/O Function
PTT detect.
I
H: release; L: press.
I/O AK2346B register
O AK2346B data
Determine option board
I according to different levels.
Used for future development.
I MIC signal input
I BATT Battery level detect.
Battery identification.
I
Identify battery chemistry.
I RSSI detect pin.
I Squelch level input.
A/D conversion power
I
grounded input.
I CTCSS signal input.
A/D conversion reference
I
voltage.
I A/D conversion power input.
O LCM reset/TP1
LCM_data/command
O identification.
H: data; L: command.
16
TC-780 Service Manual
Remarks
B indicates the
second AK2346
(using the same
clock with the first
AK2346)
(for 5-Tone model)
B indicates the
second AK2346
(using the same
clock with the first
AK2346)
(for 5-Tone model)
Reserved for patrol
module. Not used.
Reserved for patrol
module. Not used.