Read Sony CDX-C460 / CDX-C560 Service Manual online
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SECTION 4
DIAGRAMS
4-1. IC PIN DESCRIPTIONS
• IC601 µPD784035 (MAIN SYSTEM CONTROL)
• IC601 µPD784035 (MAIN SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
UNICKI
I
Serial clock input
2
UNISO
O
Serial data output
3
BUSON
O
BUS ON control output
4
UNICKO
O
Serial data output
5
WR
O
PIO write strobe output
6
BEEP
O
BEEP control output
7
RESET
I
Reset input
8
VDD
—
Power supply pin (+5 V)
9
X OUT
O
System clock output (22 MHz)
10
X IN
I
System clock input (22 MHz)
11
VSS
—
GND for microcomputer.
12 – 19
D0 – 7
I/O
PIO data input/output D0 – 7
20
EMPH
O
Emphasis control output
21
RD
O
PIO read strobe output
22
CDMON
O
CD mechanism power control output
23
LINK-OFF
O
Link off output (Fixed at “L” (C560).)
24
CD LAT
O
CD signal process latch output
25
CD SO
O
CD signal process serial data output
26
CD CKO
O
CD signal process serial clock output
27
CD RST
O
CD signal process IC reset output
28
F OK
I
Focus OK signal detection input
29
GFS
I
GFS signal detection input
30, 31
CTL1, 2
O
Driver IC control output 1, 2
32
LM EJ
O
Loading motor control output (Eject direction)
33
LM LOD
O
Loading motor control output (Loading direction)
34
PLLSI
I
PLL data input
35
PLLCKO
O
PLL clock output
36
ACC IN
I
Accessory power voltage detection input
37
TEST
I
TEST mode direct setting input
38
PLLCE
O
PLL chip enable output
39
PLLSO
O
PLL data output
40
SQ SI
I
Sub Q data input
41
SQ CKO
O
Sub Q clock output
42
AD-ON
O
Power control output for A/D conversion.
43
VOL-CE
O
Electric volume serial chip enable output
44
TIMCE
O
Calendar clock chip select output
45
GND
—
GND for microcomputer.
46
GND.
—
Connect to GND.
47
CS
O
PIO chip select output
48
LCDCE
O
LCD serial chip enable output
49
LCDCKO
O
LCD serial chip clock output
50
NOSESW
I
Detachable panel detection
51
LCDSO
O
LCD serial chip data output
52
ST/MONO
I/O
Used inconjunction with ST indicator input/force MONO output.
53
PW ON
O
System power control output
54
RAM-BU
I
RAM reset detection input
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