Sony CDX-C460 Service Manual page 27

Pin No. Pin Name I/O
55 VDD. — Power supply pin (+5 V)
56, 57 KEY IN0, 1 O KEY input 0, 1
58 RC IN0 I Rotary commander 0
59 VSM I MW/SW, FM S-meter voltage detection input
60 D-BASSIN I D-BASS rotary switch input (C460)
61 RC IN1 I Rotary commander 1
62 SD-IN I Signal detector input
63 SYS-RST O System reset control output
64 AD+B I Power supply for A/D converter.
65 AVREF(AD) I Reference voltage for A/D converter.
66 AVSS — GND for A/D converter.
67 VOL CKO O Electric volume serial clock output
68 VOL SO O Electric volume serial data output
69 AVREF(DA) — Reference voltage for D/A converter.
70 AVREF(DA). — Connect to GND.
71 BU IN I Back-up power detection input
72 SIRCS I Remote commander input
73 CNIN I Track jump number count input
74 SENS I SENS signal detection input
75 WT INT I Calendar clock timing pulse detection input
76 KEYACK I KEY input acknowledge (WAKE UP)
77 SCOR/SELF SW I SCOR signal detection input
78 UNISI I Serial data input
79, 80 A1, 0 O PIO address output
Pin Description
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• IC651 µPD71055GB-10-3B4 (SUB SYSTEM CONTROL)
Pin No. Pin Name I/O
1 NC — Not used.
2 CS I Chip select input
3 GND — GND
4, 5 A1, 0 I Address input A1, 0
6 L SW I Sled limit switch input
7 IN SW I Disc insert detection input
8 D SW I DOWN switch detection input
9 PW SEL I Power select initial setting
10 CD-ON O CD power control output
11 A-MUT O Audio mute control output
12 AMP-M O Power amplifier mute control output
13 DIMMER O DIMMER control output (Not used.)
14 – 16 D-BASS CONT3, 1, 2 O D-BASS select control output (C460)
17 NC. — Not used.
18 COLOR O Illumination color select control output
19 B-CUT O Power amplifier boost control output
20 FM ON O FM-ON output
21 TU ON O TUNER-ON output
22 ILL ON O Illumination power control output
23 VDD — Power supply pin (+5 V)
24 – 31 D7 – 0 I/O PIO data input/output D7 – 0
32 RESET I Reset input
33, 34 NC. — Not used.
35 WR O Write strobe output
36 COLORSEL I Color select with/without initial setting input (Fixed at "H" (C460), "L" (C560).)
37 EQSEL I Equalizer connection with/without initial setting input (C560)
38 D-BASS SEL I D-BASS control with/without initial setting input (Fixed at "L" (C460), "H" (C560).)
39 DSPSEL I DSP control with/without initial setting input (Fixed at "H" (C460), "L" (C560).)
40 ILL-IN I Illumination detection input
41 TELMUTE I Telephone mute detection input
42, 43 DSTSEL1, 0 I Destination select setting input
44 RD O Read strobe output
Pin Description
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