TH-D72A/D72E
12
Main MCU: 5F3651TDFC
(TX-RX (Control) unit (A/3) IC737)
Pin No.
Port Name
I/O
Function
1
VREF
-
Reference voltage
2
AVCC
-
VCC (3.3V Analog)
3
PKD96M
O
PKD (9600bps) data mute L: ON
4
BSFT2
O
Beat shift for TNC MCU clock
H: ON
5
TNC_CAR
O
RX carrier signal input (for TNC)
L: ON
6
TONE
O
Tone output
7
DTMF
O
DTMF tone output
8
SKY_SW
O
COM port signal select
L: TNC, H: Main MCU
9
BSFT1
O
Beat shift for main MCU clock
H: ON
10
CNT_CLK
O
Clock for electrical volume IC
11
CNT_DT
O
Data for electrical volume IC
12
DAC_EN
O
Enable for electrical volume IC
L: ON
13
BYTE
-
Not used (GND)
14
CNVSS
I
Not used
15
PKTBND
O
TNC input band select
L: Band A, H: Band B
16
VTX
O
TX power supply control
17
/RST
I
Reset
18
XOUT
O
System clock output (11.0592MHz)
19
VSS
-
GND
20
XIN
I
System clock input (11.0592MHz)
21
VCC
-
VCC (3.3V)
22
DAC_RST
O
Reset for electrical volume IC
23
PKS_IN
I
PKS for TNC MCU H: TX
24
DC_DET
I
DC input detection L: ON
25
INT
I
INT
26
RTS_TNC
O
RTS for TNC MCU
27
RXD_TNC
I
RXD for TNC MCU
28
CTS_TNC
I
CTS for TNC MCU
29
TXD_TNC
O
TXD for TNC MCU
30
TAB_S
O
Power supply control for RX
signaling AMP L: ON
31
LCDCNT
O
LCD contrast adjustment output
L: ON
32
LDA
I
Lock detection input from PLL (IC431)
H: ON
33
BEEP
O
Beep output
34
RXD_COM
I
RXD for COM port
35
TXD_COM
O
TXD for COM port
36
TXD1
O
Not used
Pin No.
Port Name
I/O
Function
37
VCC
I
VCC (3.3V)
38
RXD1
I
Not used
39
VSS
-
GND
40
33TNC_S
O
Power supply control for TNC
L: ON
41
SAVE2
O
RX audio fi lter switch H: ON
42
TXD_S
O
TXD for SUB MCU
43
RXD_S
I
RXD for SUB MCU
44
RST_S
O
Reset for SUB MCU L: ON
45
LDB
I
Lock detection input from PLL (IC513)
H: ON
46
KEY_O1
O
Key matrix
47
KEY_O0
O
Key matrix
48
KEY_IT
I
Key matrix
49
KEY_I4
I
Key matrix
50
MICB_S
O
Power supply control for VOX AMP
51
RTC_SDA
I/O
Data for RTC
52
RTC_SCL
O
Clock for RTC
53
INTRTC
I
INT for RTC L: ON
54
KEY_I3
I
Key matrix
55
KEY_I2
I
Key matrix
56
KEY_I1
I
Key matrix
57
KEY_I0
I
Key matrix
58
32K_SW
O
Clock output control for RTC H: ON
59
KEY_O4
O
Key matrix
60
KEY_O3
O
Key matrix
61
KEY_O2
O
Key matrix
62
LAMP
O
Back light control H: ON
63
C_S
O
Power supply control for 33C and
47C H: ON
64
GP_ON
O
Always Low
65
TXD_IGPS
O
TXD for GPS module
66
RXD_IGPS
I
RXD for GPS module
67
GP_PS
O
Power save control for GPS module
68
VGPS
O
Power supply control for GPS
module L:
ON
69
/LCD_RST
O
Reset for LCD
70
/LCD_CS
O
Not used
71
/LCD_WR
O
W/R for LCD
72
A[0]
O
Data for LCD
73
D[7]
O
Data for LCD
74
D[6]
O
Data for LCD
75
D[5]
O
Data for LCD
76
D[4]
O
Data for LCD
77
D[3]
O
Data for LCD
SEMICONDUCTOR DATA
