Circuit Description - Kenwood CD-2260M Service Manual

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1. Sub processor : uPD780023GC501 (IC3 : X25)
Pin description
Pin No. Pin Name
1 SLT-SW
2 LDC
3 MON
4 FOK
5 GFS
6 SENS
7 CLOCK
8 XLAT
9 VSS
10 VDD
11~14 –
15 DATA
16 MUTEG
17 SCLK
18 SQSO
19 –
20 SQCK
21 RXD-S
22 TXD-S
23 –
TE
L 13942296513
24 VDD
25 VDSS
26~33 –
34 AVREF
35 AVDD
36 RESET
37 XT2
38 XT1
39 VSS
40 X2
41 X1
42 VSS
43 SCOR
44 A2-SW
45 A1-SW
46 RMUTE2
47~61 –
62~64 –
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CIRCUIT DESCRIPTION

I/O
I Start limit sw input.
O Laser on/off control.
O Spindle motor on/off control.
I Focus ok signal input.
I GFS input from CXD2587Q.
I Sense output from CXD2587Q.
O Clock output to CXD2587Q.
O Latch output to CXD2587Q.
– GND.
– Power supply(+5V).
– No use.
O Serial data output.
O Mute control port.
O Clock output for SENSE serial data read out.
I Sub Q/PCM peak/level data input.
– No used.
O Clock output for SQCK read out.
I UART communication input from main microprocessor.
O UART communication output to main microprocessor.
– No use.
– Power supply(+5V).
– GND.
– GND.
– GND.
– Power supply(+5V).
I Reset signal input.
– No connection.
– Power supply(+5V).
– GND.
– Clock(8.38MHz).
I Clock(8.38MHz).
– GND.
I Input port of sub-code synchro.
O Main unit audio out -- Sub output port.
O Sub unit audio out --- Main output port.
O Analog mute control.
– No used.
– Power supply(+5V).
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CD-2260M/2280M/DPF-J7010/J9010
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Description
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