Sony TC-K808ES - Diagrams

SECTION 5
DIAGRAMS
IC PIN ASSIGNMENT
1C801 Master Microcomputer (M50964-226SP)
This IC controls, based on input signals from various switches and remote devices, the mechanical deck, audio signal switching for equalizer, muting,
etc. and data transfer to the display microcomputer.
Function
Power supply (+5V)
Power supply (GND)
Reference voltage input (+ 5V) to A/D ports
Data output (analog) to display microcomputer (IC601)
lot used
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2
ata Output to display microcomputer (IC601)
Not used (Connected to GND)
Not used (Connected to GND)
Not used (Connected to GND)
Key switch input (analog) OV: “4\”,1V: “J”, 2V: “0”, 3V: “ee”, 4V:“@”
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Key switch input (analog) OV: “p” ,1V:
Key switch input (analog) OV:“ RESET”, 1V:‘“‘MEMORY”, 2V :‘ DISPLAY MODE”
Key switch input (analog) 3V:“ REC”, 4V:“PLAY”, 5V:“ OFF”
echanism deck take-up reel table sensor pulse input
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13
14
Z|
lechanism deck supply reel table sensor pulse input
A|
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egative pulse input at counter 0
ot used
ot used (Connected to GND)
ot used (Connected to GND)
ot used (Connected to GND)
ot used (Pull up)
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19
20
S-CLOCK
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30
31
3
33~36
lock output (4MHz)
‘ot used
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22 I SIRCS signal (remote control) normal phase input
23 SIRCS signal (remote control) inverted phase input Inverted SIRCS-L input
24 Not used (Open)
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29 Clock input (4MHz)
Poot
Power supply (GND)
Rotary encoder input for mechanism deck head base position detection
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37
38
Mechanism deck OPEN SW (S1004) input “LL” : Cassette holder is opened
| 1 | Mechanism deck CLOSE SW ($1003) input“ L” : Cassette holder is closed
OPEN SW
CLOSE SW
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