Diagrams; Ic Pin Descriptions - Sony CDX-C460 Service Manual

4-1. IC PIN DESCRIPTIONS

• IC601 µPD784035 (MAIN SYSTEM CONTROL)
Pin No. Pin Name
1 UNICKI
2 UNISO
3 BUSON
4 UNICKO
5 WR
6 BEEP
7 RESET
8 VDD
9 X OUT
10 X IN
11 VSS
12 – 19 D0 – 7
20 EMPH
21 RD
22 CDMON
23 LINK-OFF
24 CD LAT
25 CD SO
26 CD CKO
27 CD RST
28 F OK
29 GFS
30, 31 CTL1, 2
32 LM EJ
33 LM LOD
34 PLLSI
35 PLLCKO
36 ACC IN
37 TEST
38 PLLCE
39 PLLSO
40 SQ SI
41 SQ CKO
42 AD-ON
43 VOL-CE
44 TIMCE
45 GND
46 GND.
47 CS
48 LCDCE
49 LCDCKO
50 NOSESW
51 LCDSO
52 ST/MONO
53 PW ON
54 RAM-BU
SECTION 4

DIAGRAMS

I/O
I Serial clock input
O Serial data output
O BUS ON control output
O Serial data output
O PIO write strobe output
O BEEP control output
I Reset input
— Power supply pin (+5 V)
O System clock output (22 MHz)
I System clock input (22 MHz)
— GND for microcomputer.
I/O PIO data input/output D0 – 7
O Emphasis control output
O PIO read strobe output
O CD mechanism power control output
O Link off output (Fixed at "L" (C560).)
O CD signal process latch output
O CD signal process serial data output
O CD signal process serial clock output
O CD signal process IC reset output
I Focus OK signal detection input
I GFS signal detection input
O Driver IC control output 1, 2
O Loading motor control output (Eject direction)
O Loading motor control output (Loading direction)
I PLL data input
O PLL clock output
I Accessory power voltage detection input
I TEST mode direct setting input
O PLL chip enable output
O PLL data output
I Sub Q data input
O Sub Q clock output
O Power control output for A/D conversion.
O Electric volume serial chip enable output
O Calendar clock chip select output
— GND for microcomputer.
— Connect to GND.
O PIO chip select output
O LCD serial chip enable output
O LCD serial chip clock output
I Detachable panel detection
O LCD serial chip data output
I/O Used inconjunction with ST indicator input/force MONO output.
O System power control output
I RAM reset detection input
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Pin Description