Kenwood RXD-M52-L Service Manual page 5

3-2 Pin Description of Microprocessor
Pin No. Pin Name
1 8SW2
2 SCLK
3 SENS
4 FAN/DA
5 DATA
6 XRST
7 CLOK
8 BYTE
9 CNVSS
10 XTIN
11 XTOUT
12 RESET
13 XOUT
14 VSS
15 XIN
16 VCC
17 NMI
18 u-COM CE
19 REM
20 SCOR
21 STBY RED
22 LCD BKLT
23 STBY GR
24 LED CD
25 LED MD/TAPE
26 CD XLAT
27 ENC A
28 ENC B
29 MD RXD
30 MD TXD
31 LCD SI
32 LCD AO
33 LCD SCL
34 LCD RST
35 SMK M/D
36 SQSO
37 SQCK
38-40 SMK1-3
41 STB
42 W/R
43 SDA
44 SCL
45 OP SW
46 LCD CSI
47 CL SW
48 PH SW
49 REC F SW
50 HALF SW
51 PLAY SW
52 TYPE SW
53 REC R SW
54 SBUSY
55 SDATA
56 RDS DATA
57 TMUTE
58 SD
59 ST
60 PLL DATA
61 PLL CLK
62 VCC
63 PLL CE
64 VSS
65 PLL DO
66 EMP/MONO
CIRCUIT DESCRIPTION
I/O
I Detection port of 8cm disc for CD mechanism.
O Clock output to DSP IC(X29,IC9).
I Sense input port from DSP IC(X29,IC9).
O Control port of fan motor.
O Data output to DSP IC(X29,IC9).
O Reset output to DSP IC(X29,IC9).
O Clock output to DSP IC(X29,IC9).
- Connected to ground.
- Connected to ground.
I Clock input(32.768kHz).
O Clock output(32.768kHz).
I Reset signal input.
O Main clock output(1MHz).
- Connected to ground.
I Main clock input(1MHz).
- Power supply.
- Power supply.
I Detection port of AC off.
I Input port of remote control signal.
I Input port of sub code synchronized signal.
O Standby LED(red) control terminal.
O Control terminal of LCD back light.
O Standby LED(green) control terminal.
O LED(CD) control terminal.
O LED(MD/TAPE) control terminal.
O Latch output to DSP IC(X29,IC9).
I Input port of volume encoder.
I Input port of volume encoder.
I Data input from MD mechanism microprocessor.
O Transmission data output to MD mechanism microprocessor.
O Data output to LCD driver.
O AO control to LCD driver.
O Clock output to LCD driver.
O Reset output to LCD driver.
I Discrimination port for deck and MD.
I Data input for CD sub Q data.
O Clock output for CD sub Q data.
I Discrimination port of destination for TUNER.
O Strobe output to NJU3713D(X28,IC4).
O Unused.
I/O E2PROM data.
O E2PROM clock output.
I Input port of open switch for deck(deck version only).
O CE output to LCD driver.
I Input port of close switch for deck(deck version only).
I Input port of photo sensor for deck(deck version only).
I Deck forward switch input(deck version only).
I Input port of half switch for deck(deck version only).
I Input port of play switch for deck(deck version only).
I Detection port for tape type(Normal/CrO2).
I Deck reverse switch input(deck version only).
- Unused.
- Unused.
I RDS data input(E/T type only).
O TUNER muting control.
I Detection terminal of SD signal for TUNER.
I Detection terminal of stereo signal for TUNER.
O Data output to PLL IC.
O Clock output to PLL IC.
- Power supply.
O PLL chip enable.
- Connected to ground.
I PLL IF count input.
O Control port of DE-emphasis.
RXD-M52
Description
5