Circuit Description - Kenwood CD-3260M Service Manual

1-2 Microprocessor pin description (X32, IC8) :UPD784215GF541
Pin No. Pin Name
1 A2
2 NC
3 S3-SW
4 S2-SW
5 RD
6 WR
7 S1-SW
8 ASTB
9 VDD
10 +5VPUL
11 RTRN
12 RWR
13 RWRR
14-21 L-D7-D0
22 TEST
23 DISC-SW
24 ROTARY-CW
25 ROTARY-CCW
26 LOADM+1
27 LOADM-1
28 LOAD-SW1
29 UNLOAD-SW1
30 CS
31 MON
32 SCLK
33 SENS
34 CLOCK
35 XLAT
36 DATA
37 VDD
38,39 X1,2
40 VSS
41 XT2
42 XT1
43 RESET
44 SCOR
45 MUTEG
46 STB2
47 ICRESET
48 SYSM
49 SDATA
50 SBUSY
51 AVDD
52 AVREF
53 A/D0
54 8/16
55 JOG2

CIRCUIT DESCRIPTION

I/O
O Address bus of SRAM.
- No connection.
I Mechanism address detector switch.
I Mechanism address detector switch.
O SRAM read strobe.
O SRAM write strobe.
I Mechanism address detector switch.
O No connection.
- Power supply(+5V).
O Disc sensor ON/OFF. L:on
I TX permission data to remote control microprocessor.
I Reading data of remote control microprocessor.
O TX request data to remote control microprocessor.
O Data output to remote control microprocessor.
- GND.
I Disc sensor.
O Mechanism rotary motor(+). H:CCW
O Mechanism rotary motor(-). H:CW
O Loading motor(+) for main pickup.
O Loading motor(-) for main pickup.
I Loading switch for main pickup.
I Unloading switch for main pickup.
O Chip selector
O Control port of poor focus works.
O Sens serial data read clock.
I SENS signal input.
O Serial data clock.
î: latch
O CXD2587Q latch. H
O Serial data output.
- Power supply(+5V).
- Main system clock(12.5MHz).
- GND.
- No connection.
I GND.
I System reset signal input.
I Sub code synchro detection.
O Muting control output. H:muting on.
O Strobe signal output to dot driver2(CD-3280M only).
O IC reset.
O Analog muting. L: Muting on.
I/O Serial data signal I/O.
I/O Serial busy signal I/O.
- Power supply(+5V).
- A/D reference power supply.
I Model selector.
I 8/16 bit selector. H:16bit.
I Encoder signal A input.
CD-3260M/3280M/DPF-J7020
Description
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