Semiconductor Data - Kenwood TK-780 Service Manual

Microprocessor : 30620M8A-2K9GP (TX-RX Unit B/2 : Control Section IC511)
Terminal function
Pin No. Name I/O
1 LSDOUT O
2 HSDOUT O
3 HSDIN I
4 DTMSTD I
5 SELF I
6 BYTE I
7 CNVSS I
8 SFTOE O
9 LCDCS O
10 RESET I
11 XOUT –
12 VSS –
13 XIN –
14 VCC –
15 IGN I
16 AFTRD I
17 AFRTM I
18 MICDAT O
19 CP O
20 BEEP O
21 AFRDT I
22 AFREG1 O
23 AFREG2 O
24 EEPDAT O
25 EN O
26 AFCLR O
27 RXCOM2 I
28 TXCOM2 I/O
29 TXCOM1 O
30 RXCOM1 I
31 LD I
32 AFMSKE O
33 TXD O
34 HOOK I
35 AFDAT O
36 RFCLK O
37 RDY –
38 ALE –
39 HOLD –
40 HLDA –
41 BLCK –
42 RD –
43 BHE –
44 WR –
45 DTMCLK O
46 CNTCLK O

SEMICONDUCTOR DATA

Function
Low speed data output.
High speed data output.
High speed data input.
DTMF decode IC data detect input.
Self programming mode input.
+5V.
GND.
Shift register output enable.
LCD driver chip select output.
Microcomputer reset input.
9.8304MHz (System clock).
GND.
9.8304MHz (System clock).
+5V.
Ignition input.
FFSK modulation data output timing
pulse input.
FFSK demodulation data input tim-
ing pulse input.
MIC key data output.
PLL IC clock output.
Beep data output.
FFSK demodulation data input.
AF IC register switching data output 1.
AF IC register switching data output 2.
EEPROM data output.
D/A converter IC data strobe output.
FFSK flame reset output.
External hook input / External serial
interface input.
External PTT input / External serial
interface output.
External serial interface output.
External serial interface input.
PLL unlock detect input.
FFSK modulation enable.
(Enable active "H")
Serial interface output.
Hook input / Serial interface input.
FFSK data output.
Common clock output. (TX-RX unit A/2)
Not used.
Not used.
Not used.
Not used.
Not used.
Flash memory RD bus.
Not used.
Flash memory WR bus.
DTMF decode IC clock output.
Common clock output. (TX-RX unit B/2)
Pin No. Name I/O
47 EP O
48 CSO O
49 A19 –
50~59 A18~A9 –
60 VCC –
61 A8 –
62 VSS –
63~70 A7~A0 –
71~74 KEY1~KEY4 I/O
75 MINDAT O
76~78 KEY5~KEY7 I
79~86 D7~D0 –
87 DTMDAT I
88 AUXDTC I
89 MICBLC O
90 POWSW I
91 ANLSQL I
92 PTT I
93 RSSI I
94 AVSS –
95 LSDIN I
96 VREF –
97 AVCC –
98 ES1 O
99 ES2 O
100 AFSTB O
Shift Register : BU4094BCFV
Terminal function (TX-RX unit B/2 IC508)
Pin No. Port Name
1 ES ES1 Strobe
2 DT DAT Data
3 CK Clock
4 Q1 LEDR Red LED. H : ON, L : OFF
5 Q2 LEDG Green LED. H : ON, L : OFF
6 Q3 KEYBLT Key back light. H : ON, L : OFF
7 Q4 MMUTE MIC mute. H: Mute, L : Unmute
8 VSS GND
9 NC
10 NC
11 Q8 PA2 Public address control 2. H : ON, L : OFF
12 Q7 BSHIFT Beat shift. H : ON, L : OFF
13 Q6 KEY TX power switching. H : TX, L : RX
14 Q5 T/R TX/RX switching. H : RX, L : TX
15 OE Output enable
16 VDC +5V
TK-780
Function
PLL IC data strobe output.
Flash memory chip enable.
Not used.
Flash memory address bus.
+5V.
Flash memory address bus.
GND.
Flash memory address bus.
Key matrix data input/output 1~4.
Common data output.
Key matrix data input 5~7.
Flash memory data bus.
DTMF decode IC data input.
External DTC input.
MIC back light control output.
Power switch input.
Squelch level input.
PTT switch input.
Received signal strength indicator
input.
GND.
Low speed data input.
+5V.
+5V.
Shift register data strobe output.
(Control unit)
Shift register data strobe output.
(TX-RX unit)
AF IC data strobe output.
Function
31