Circuit Description; Pin Description Of Microprocessor : Ic2 - Kenwood RXD-NV301 Service Manual

RXD-NV301/NV301E/NV701/NV701E
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1. Pin description of microprocessor : IC2

CXP82852-183Q(RXD-NV301)/CXP82860-185Q(RXD-NV701)
Pin No. Pin Name
1,2
3 VDD
4 POWER DOWN
5 VOLUME DOWN
6 RDS CLK
7 VOLUME UP
8 REMOCON
9 RDS DATA
10,11
12 PROTECTION
13 CrO2
14 REEL DATA
15 AMS IN
16 SYS DATA
17 SYS CLK
18 DIGI 1
19 DIGI 2
20 H/P SENSE
912CSB
21
912SCK
22
TUNER CLK
TE
L 13942296513
912SO
23
912SI
24
912CS
25
26 TUNED
27 STEREO
28 VREF
29,30 KEY1,KEY2
31 VSM
32 TUNER DO
33 MODE(DECK)
34 STATUS
35 AREA SELECT
36 THERMAL PROTECT
37 AVSS
38 RESET
39 EXTAL
40 XTAL
41 VSS
42
43
44 VDD
45 VFDP
46 SOLENOID
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47 MOTOR ON
48 DECK MUTE
49 REC MUTE
50 DOLBY
51 BEAT CUT
52 CrO2- REC
53 REC/PB
54 CD POWER DOWN
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CIRCUIT DESCRIPTION

I/O
NC - Unused.
- Power supply.
I Input port for power down.
I Pulse input of volume encoder(down).
I RDS clock input.
I Pulse input of volume encoder(up).
I Remote control data input.
I RDS data input.
NC - Unused.
I Detection signal input for protection.
I Input port of CrO2 detection switch for deck.
I Input port of reel data.
I AMS input.
Data output to volume IC(IC313) for NV701.
O
Data output to function IC(IC301) for NV301.
Clock output to volume IC(IC313) for NV701.
O
Clock output to function IC(IC301) for NV301.
I/O Communication with FL driver IC.
I/O Communication with FL driver IC.
I Detection port of headphones jack.
O Sub DSP chip select for NV701.
NC - Unused for NV301.
O Clock output to YSS912(IC603) for NV701.
O Clock output to PLL IC(IC2) for NV301.
O Serial data output to YSS912(IC603) for NV701.
NC - Unused for NV301.
I Serial data input from YSS912(IC603) for NV701.
NC - Unused for NV301.
O Chip select to YSS912(IC603) for NV701.
NC - Unused for NV301.
I Tuned input.
I Stereo signal input.
- Reference voltage.
I A/D key input.
I Tuner signal meter A/D input.
I PLL IC data input.
I Deck mode switch input.
I Deck pack in/rec in/off sense port.
I Selection of destination for tuner.
I Detection port of thermometer.
- Connected to ground.
I Reset signal input.
I Input port of crystal oscillator.
O Output port of crystal oscillator.
- Connected to ground.
TX - Port for 32.768kHz crystal oscillation.
TEX - Port for 32.768kHz crystal oscillation.
- Power supply.
- Connected to ground.
O Control port of solenoid for deck.
O Control port of motor for deck.
O Control port of deck mute.
x ao
y
O Control port of rec mute.
O Dolby noise reduction output for deck.
. i
O Output port of AM beat cut for deck.
O Control port of rec bias for deck.
O Selection of recording and playback for deck.
O Control port of CD power down.
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Description
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