XR-C8220 Datasheet, PDF (12/14 Pages) Sony Corporation – SERVICE MANUAL

Pin No.
32
33
34
Pin Name
LCD INH
VSS
C
35
AD-ON
36
RE-IN0
37
RE-IN1
38
DVCC
39
DVSS
40
—
41
LCDANG
42
AVCC
43
AVRH
44
AVRL
45
AVSS
46
KEYIN0
47
KEYIN1
48
RC-IN0
49
DSTSEL0
50
DSTSEL1
51
DSTSEL2
52
MTP
53
VSM
54
VCC
55
RAMBU
56
POWSEL
57
EQ-SEL
58
TESTIN
59
PACK-IND
60
TIR-PLAY
61
SUB-SW1
62
SUB-SW0
63
VSS
64
VOLCE
65
MUTE
66
VOLSO/
SUBSO
67
VOLCKO/
SUBCKO
I/O
Function
O Blank indicate control signal output to the liquid crystal display driver (IC900) “L”: no display
— Ground terminal
— Connected to coupling capacitor for the power supply
A/D converter power control signal output terminal
O When the KEYACK (pin &§) that controls reference voltage power for key A/D conversion input
is active, “L” is output from this terminal to enable the input
I _{Dial pulse input of the rotary encoder (RE900)}
I ^{(for VOLUME/BASS/TREBLE/BALANCE/FADER control)}
— Power supply terminal (+5V) (for D/A converter)
— Ground terminal (for D/A converter)
I Not used (fixed at “L”)
O
View field angle control signal is output when front panel is fully opened
“H”: front panel is fully opened
— Power supply terminal (+5V) (for A/D converter)
I Reference voltage (+5V) input terminal (for A/D converter)
I Reference voltage (0V) input terminal (for A/D converter)
— Ground terminal (for A/D converter)
I
Key input terminal (A/D input) (LSW900, S900, LSW901 to LSW908) OFF, SEEK/AMS +
+ ) = 0 – , MODE *, SOURCE, SOUND, DSPL, SHIFT, 1, 2, 3 keys input
I
Key input terminal (A/D input) (SW801, LSW909, LSW912 to LSW918)
6, LIST, 10, 9, 8, 7, 6, 5, 4 keys input
I Rotary remote commander key input terminal (A/D input)
I Destination setting terminal (fixed at “L”)
I Destination setting terminal (fixed at “H”)
I
Destination setting terminal
(US model: fixed at 3/4 voltage, E model: frequency select switch input)
I Multi-path detection signal input from the RDS decoder Not used (open)
I
FM and AM signal meter voltage detection input from the FM/AM tuner unit (TUX10)
(A/D input)
— Power supply terminal (+5V)
Internal RAM reset detection signal input from the RN5VD33AA (IC501)
I Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 100 msec after reset
I Power select switch (S600) input terminal “L”: off (halt mode), “H”: on (operation mode)
I Not used (fixed at “H”)
I Setting terminal for the test mode “L”: test mode, Normally: fixed at “H”
O
LED drive signal output of the tape window illumination and 6 indicators (LED800, 802)
“H”: LED on “H” is output to turn on LED when front panel is opened
O ^{AM/TIR selection signal output terminal “L”: AM signal, “H”: TIR signal}
Not used (pull down)
O Sub woofer output cut-off frequency select signal output terminal
O Sub woofer output cut-off frequency select signal output terminal
— Ground terminal
O Chip enable signal output to the main electrical volume (IC301) “H”: active
O Audio line muting on/off control signal output terminal “H”: muting on
O Serial data output to the main electrical volume (IC301) and sub electrical volume (IC350)
O
Serial data transfer clock signal output to the main electrical volume (IC301) and sub electrical
volume (IC350)
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