TH-D72A/D72E
19
TX-RX unit (X57-784X-XX) (C/3, A/3)
: TX-RX, Control
CN611
Pin No.
CN731
Pin No.
Name
Function
CN611 – CN731 (TX-RX to Control)
1
26
C_S
Unit power supply control
2
25
GND
GND
3
24
RXD_S
RXD for Sub MCU control
4
23
TXD_S
TXD for Sub MCU control
5
22
DC_DET
DC input detection
6
21
VTX
4.5V TX power supply control
7
20
MOD
Modulation signal
8
19
REF_A
VC control for TCXO (X431)
9
18
LDB
Unlock detection input from PLL
(IC513)
10
17
DET_B
Band B RX detect signal
11
16
SQB
Band B squelch voltage
12
15
SMB
Band B RSSI voltage
13
14
BPFA
Band A BPF tuning voltage
14
13
APC&BPFB
Band B BPF tuning/APC voltage
15
12
SMA
Band A RSSI voltage
16
11
SQA
Band A squelch voltage
17
10
DET_A
Band A RX detect signal
18
9
LDA
Unlock detection input from PLL
(IC431)
19
8
TC&REF_B
VC control for TCXO (X511)
20
7
RST_S
Reset for sub MCU
21
6
B
+B power supply
22
5
B
+B power supply
23
4
B
+B power supply
24
3
NC
Not used
25
2
GND
GND
26
1
NC
Not used
Pin No.
Pin Name
I/O
Function
10
D[5]
O
Data output
11
D[6]
O
Data output
12
D[7]
O
Data output
13
VDD
O
Power supply (3.3V)
14
VSS
O
GND
15
VDD
O
Power supply (3.3V)
16
V1
I
Power supply V1
17
V2
I
Power supply V2
18
V3
I
Power supply V3
19
V4
I
Power supply V4
20
V5
O
Power supply V5
CN715 (to FPC ASSY)
1
KEY_O3
O
Key matrix
2
KEY_O2
O
Key matrix
3
KEY_O0
O
Key matrix
4
KEY_I4
I
Key matrix
5
KEY_O1
O
Key matrix
6
SPI
O
SP AF output
7
SPG
O
SP GND
8
MICG
I
MIC GND
9
MICI
I
MIC audio input
10
PSW
I
Power key
11
GND
-
GND
12
LAMP B
O
Back light power supply
13
KEY_I2
I
Key matrix
14
KEY_I3
I
Key matrix
15
KEY_O4
I
Key matrix
CN719 (to PTT section)
1
PTT
I
PTT KEY
2
GND
-
GND
3
KEY_I0
I
Key matrix
4
KEY_O4
O
Key matrix
5
KEY_I1
I
Key matrix
6
CHG_TH
I
Thermal detect for charge
J702 (EXT. COM Port)
1
TXD
O
TXD for RS-232C
2
RXD
I
RXD for RS-232C
3
GND
-
GND
J703 (EXT. USB Port)
1
V BUS
I
Power supply from PC
2
D–
I/O
12Mbps data (full speed)
3
D+
I/O
12Mbps data (full speed)
4
NC
-
Not used
5
GND
-
GND
TERMINAL FUNCTION
