Semiconductor Data - Kenwood TK-2102G Service Manual

TK-2102G
Microprocessor: 38268MCA060GU (TX-RX unit IC403)
Pin No. Port Name
1,2 VC1,VC2
3 NC
4 TIBI
5 TI
6 BUSY
7 BATT
8 NC
9 VCCN
10 APC
11~14 NC
15 BEEP
16 TO
17 NC
18 PTT
19 TXD
20 RXD
21 NC
22 SELF
23 MONl
24~27 NC
28~31 ENC3~ENC0
32 INT0
33 RST
34 NC
35 NC
36 XIN
37 XOUT
38 VSS
39 SHIFT
40 PABC
41 WNRC
42 WNTC
43~46 NC
47 SDA
48 SCL
49 UL
50~54 NC
55 DT
56 CK
57 NC
58 LE
59,60 NC
10

SEMICONDUCTOR DATA

I/O Function
O Variable capacity tune control
I NC
QT/DQT external circuit center point
I
input
I QT/DQT signal input
I Busy input
l Battery voltage detection
l NC
O Frequency regulation output
TX : Auto power control D/A output
O
RX : BPF tuning D/A output
I NC
O Beep output
O QT/DQT output
l NC
I [PTT] key input connected to RXD
RS-232C output connected to SP/
O
MIC test (REM)
RS-232C input connected to [PTT]
I
line
l NC
l Self program L : disable
I [MONl] key input
I NC
l Encode input (channel select)
l Power detection control
I Reset input
I NC
O NC
l 7.3728MHz oscillator
O 7.3728MHz oscillator
I GND
O Beat shift H : shift on
O Final supply H : on
O Audio reference sensitivity L : narrow
O MAX Dev. control Narrow: H
l NC
l/O EEPROM data line
O EEPROM clock line
I PLL unlock detection pin L : unlock
l NC
O Common data output
O Common clock output
O NC
O PLL IC enable H : latches
O NC
Pin No. Port Name I/O
Control of power supply (5M) for
everything except the
61 5MC O
microprocessor and EEPROM
L : Power supply ON
62 AFCO O AF amp power suppIy H : ON
63 RX O TX/RX VCO select H : RX
64 GLED O Green LED control H : Lit
65 RLED O Red LED control H : Lit
66 SAVE O Save control H : Save off
Mute control
67 MUTE O
H : MIC mute, L : AF mute
Reception power suppIy control
68 5RC O
L : on
Transmission power suppIy control
69 5TC O
H : on
70~88 NC O NC
89 VCC l Microprocessor power supply, 5V input
A/D conversion reference voltage ;
90 VREF l
connected to Vcc
A/D converter power supply ; con-
91 AVSS l
nected to Vss
92~95 NC O NC
96~100 NC I NC
FET : 2SK2596-E (Q102)
Absolute Maximum Ratings (Ta=25°C)
Item V V I
DSS GSS D
Rating 17V ±10V 0.4A
FET : 2SK2595-E (Q105)
Absolute Maximum Ratings (Ta=25°C)
Item V V I
DSS GSS D
Rating 17V ±10V 1.1A
Function
Pch* Tch Tstg
3W 150°C -45~+150°C
*Tc=25°C
Pch* Tch Tstg
20W 150°C -45~+150°C
*Tc=25°C