Sony XR-C8220 Service Manual page 37

Pin No. Pin Name
32 LCD INH
33
VSS
34 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
VOLSO/
66
SUBSO
VOLCKO/
67
SUBCKO
I/O
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
When the KEYACK (pin &§) that controls reference voltage power for key A/D conversion input
O
is active, "L" is output from this terminal to enable the input
I
Dial pulse input of the rotary encoder (RE900)
(for VOLUME/BASS/TREBLE/BALANCE/FADER control)
I
— Power supply terminal (+5V) (for D/A converter)
—
Ground terminal (for D/A converter)
I
Not used (fixed at "L")
View field angle control signal is output when front panel is fully opened
O
"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)
Key input terminal (A/D input) (LSW900, S900, LSW901 to LSW908) OFF, SEEK/AMS +
I
+ ) = 0 – , MODE *, SOURCE, SOUND, DSPL, SHIFT, 1, 2, 3 keys input
Key input terminal (A/D input) (SW801, LSW909, LSW912 to LSW918)
I
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")
Destination setting terminal
I
(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)
FM and AM signal meter voltage detection input from the FM/AM tuner unit (TUX10)
I
(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"
LED drive signal output of the tape window illumination and 6 indicators (LED800, 802)
O
"H": LED on "H" is output to turn on LED when front panel is opened
AM/TIR selection signal output terminal "L": AM signal, "H": TIR signal
O
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)
Serial data transfer clock signal output to the main electrical volume (IC301) and sub electrical
O
volume (IC350)
Function
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