Kenwood KRC-694/Y, Руководство по обслуживанию

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KRC-694/Y
KRC-766
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
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SYSTEM MICROCOMPUTER MN101C49HNA (IC1: X14-)
Pin No. Name Module I/O Description Processing Operation
1 VREF- Power supply GND for A/D
2 F REEL TAPE I Reel pulse FWD Cassette mecha reel pulse output FWD Vth=2.5V
3 R REEL TAPE I Reel pulse REW Cassette mecha reel pulse output REW Vth=2.5V
4 S-METER TUNER I K3I tuner S-meter
5 IFC-OUT TUNER I IF count 0V or 5V
6 NOISE TUNER I FM noise detection terminal
7 PHONE EXTRA I PHONE detection terminal
Tel mete :1V or less, NAVI MUTE:2.5V or less,
Only J type 1V or less,more than 2.5V NAVI
7 PHONE EXTRA I When Not used, output L fixed
8 DCDET RESERVE Power supply I Not used DE DET pull down DC offset detection terminal of P-IC
9 GND Power supply GND
10 VREF+ Power supply VCC for A/D
11 VDD Power supply Microcomputer's main Vcc
12 MAIN OSC1 Main oscillation input 8.38MHz
13 MAIN OSC2 Main oscillation input
14 VSS Power supply Microcomputer's main GND
15 SUB OSC1 32.768kHz oscillation input
16 SUB OSC2 32.768kHz oscillation input
17 GND Power supply GND External ROM
18 LX-DATAM LX O Data output to CH Last maintain
19 LX-DATAS LX I Data input from CH
20 LX-CLK LX O Clock input and output with CH
21 FLASH READ O
22 FLASH WRITE O
23 FLASH CLK O
24 BEEP AUDIO O Beep for built in amplifier
25 PANEL-DET to PANEL I Panel existence detection terminal Detached the panel :L, Attached the panel :H
26 REMO to PANEL I Remote control input
27 R-CLK TUNER I Clock for RDS decoder With no destination:out put L fixing
27 NC O With no RDS output L fixed
28 LX-REQS LX I Request input from CH Request detection :L
29 B.U-DET Power supply I Momentary power down detection BU detection :L With no BU :H
30 EJECT to PANEL I Tape eject L :KEY input
31 KEY-REQ to PANEL I Communication request from LCD driver L :KEY input
32 VDD Power supply I VDD
33 RESET I Reset
During tape play :L
34 EQ MUTE TAPE O Equalizer mute During tape FF/REW :H
Mode except tape :H
35 DOLBY TAPE O B NR ON/OFF
B NR ON:H, B NR OFF:L
Mode except tape :keep the value
36 MUSIC TAPE I Tape between music detection music signal detection:L, with no music signal:H
37 NC O
38 NC O
39 NC O
40 NC O
41 VDD Power supply I VDD
42 L DATAS to PANEL O TXD for LCD
43 L DATAL to PANEL I RXD for LCD
44 L CLK to PANEL O Clock for LCD
45 PLL DATA TUNER I/O Tuner I2C SDA
46 NC O
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