TK-2107G
15
MCU: 38268MCA060GU (IC403)
Pin No. I/O Port Name
Function
1
O
VC1
Variable capacity tune control
2
O
VC2
Variable capacity tune control
3
I
NC
NC
4
I
TIBI
QT/DQT external circuit center point
input
5
I
TI
QT/DQT signal input
6
I
BUSY
Busy input
7
l
BATT
Battery voltage detection
8
l
NC
NC
9
O
VCCN
Frequency regulation output
10
O
APC
TX: Auto power control D/A output
RX: BPF tuning D/A output
11~14
I
NC
NC
15
O
BEEP
Beep output
16
O
TO
QT/DQT output
17
l
NC
NC
18
I
PTT
[PTT] key input Connected to RXD
19
O
TXD
RS-232C output Connected to SP/MIC
test (REM)
20
I
RXD
RS-232C input Connected to [PTT] line
21
l
NC
NC
22
I
SELF
Self program L: Disable
23
I
MONl
[MONl] key input
24~27
I
NC
NC
28
l
ENC3
Encode input (channel select)
29
l
ENC2
Encode input (channel select)
30
l
ENC1
Encode input (channel select)
31
l
ENC0
Encode input (channel select)
32
l
INTO
Power detection control
33
I
RST
Reset input
34
I
NC
NC
35
O
NC
NC
36
l
XIN
7.3728MHz oscillator
37
O
XOUT
7.3728MHz oscillator
38
I
VSS
GND
39
O
SHIFT
Beat shift H: Shift on
40
O
PABC
Final supply H: On
41
O
WNRC
Audio reference sensitivity L: Narrow
42
O
WNTC
MAX Dev. Control Narrow: H
43~46
l
NC
NC
47
l/O
SDA
EEPROM data line
Pin No. I/O Port Name
Function
48
O
SCL
EEPROM clock line
49
I
UL
PLL unlock detection pin L: Unlock
50~54
l
NC
NC
55
O
DT
Common data output
56
O
CK
Common clock output
57
O
NC
NC
58
O
LE
PLL IC enable H: Iatches
59,60
O
NC
NC
61
O
5MC
Control of power supply (5M) for every-
thing except the microcomputer and
EEPROM L: Power supply on
62
O
AFCO
AF amp power suppIy H: On
63
O
RX
TX/RX VCO select H: RX
64
O
GLED
Green LED control H: Lit
65
O
RLED
RED LED control H: Lit
66
O
SAVE
Save control H: Save off
67
O
MUTE
Mute control H: Mic mute, L: AF mute
68
O
5RC
Reception power suppIy control L: On
69
O
5TC
Transmission power suppIy control
H: On
70~88
O
NC
NC
89
l
VCC
Microcomputer power supply, 5V input
90
l
VREF
A/D conversion reference voltage; con-
nected to Vcc
91
l
AVSS
A/D converter power supply; connected
to Vss
92~95
O
NC
NC
96~100
I
NC
NC
FET: 2SK2596-E (Q102)
■
Absolute Maximum Ratings (Ta=25°C)
Item
VDSS
VGSS
ID
Pch
Tch
Tstg
Rating
17V
±10V
0.4A
3W
Tc=25°C
150°C
–45~+150°C
FET: 2SK2595-E (Q105)
■
Absolute Maximum Ratings (Ta=25°C)
Item
VDS
VGSS
ID
Pch
Tch
Tstg
Rating
17V
±10V
1.1A
20W
Tc=25°C
150°C
–45~+150°C
SEMICONDUCTOR DATA
