Sony CDX-C680 Service Manual page 33

• IC501 MB90574PFV-G-123-BND (SYSTEM CONTROL) (MAIN BOARD)
Pin No. Pin Name
1 SEKOUT
2 AF-SEEK
3 WIDE
4 ST-MONO
5 TUNMUTE
6 FM-ON
7 TU-ON
8 VCC
9 CSV-RST
10 BUSON
11 SYSRST
12 DOORSW
13 LCDSO
14 LCDCKO
15 BEEP
16 LCDCE
17 UNISI
18 UNISO
19 UNICKIO
20 SD-IN
21 CSV-SO
22 CSV-CKO
23 CSV-CE
24 SIRCS
25 PLLSI
26 PLLSO
27 PLLCKO
28 PLLCE
29 ILL-ON
30 DIMMER
31 TIRIND
32 LCDINH
33 VSS
34 C
35 AD-ON
36, 37 RE-IN0, 1
38 DVCC
39 DVSS
40 NCO
41 LCDANG
42 AVCC
43 AVRH
44 AVRL
45 AVSS
46, 47 KEYIN0, 1
48 RC-IN0
49 DSTSEL0
50 DSTSEL1
51 DSTSEL2
52 MTP
53 VSM
54 VCC
I/O
O SEEK OUT output
O AF SEEK output (Not used in this set.)
O WIDE/NARROW select output
I/O Use a thing both as ST-IND display input and force MONO output.
O Tuner mute output
O FM ON output
O Tuner ON output
— Power supply pin (+5 V)
O Audio composition IC reset output (Not used in this set.)
O Bus ON control output
O System reset output
I Door OPEN/CLOSE detection input
O LCD serial data output
O LCD serial clock output
O BEEP output
O LCD chip enable output
O Serial data input
O Serial data output
I/O Serial clock input/output
I Signal detector input
O Audio composition serial data output (Not used in this set.)
O Audio composition serial clock output (Not used in this set.)
O Audio composition chip enable output (Not used in this set.)
I Remote commander input
I PLL data input
O PLL data output
O PLL clock output
O PLL chip enable output
O Illumination power control output
I/O Dimmer control input/output
O TIR indicator control output (Not used in this set.)
O LCD blank display control output
— GND
— Power stabilization capacitor pin
O Power control output of A/D conversion.
I Rotary encoder input 0, 1
— D/A converter VREF input
— GND of D/A converter.
O Not used.
O LCD view angle alignment output
— Analog power supply pin (+5 V)
— A/D converter VREF+ input
— A/D converter VREF- input
— Analog GND
I Key input 0, 1
I Rotary commander input 0
I Destination select input 0 (Fixed at "L" in this set.)
I Destination select input 1 (Fixed at "L" in this set.)
I Destination select input 2 (Fixed at "H" in this set.)
I Tuner multi-pass input (Not used in this set.)
I S-Meter voltage detection input
— Power supply pin (+5 V)
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Pin Description