Sony CDX-CA530X, CDX-CA400, CDX-CA580X service manual Section Diagrams, IC PIN Description

CDX-CA400/CA530X/CA580X

SECTION 3

DIAGRAMS

3-1. IC PIN DESCRIPTION

• IC801 µPD780076GK-520-9ET (SYSTEM CONTROLLER)

Pin No.	Pin Name				I/O	Pin Description
1				PH1	I	PH1 detection input (Not used in this set.)
2				D SW	I	Down switch detection input
3	IN SW/PH2				I	Disc in switch detection input
4			LM LD		O	Loading motor drive output (Loading)
5				LM EJ	O	Loading motor drive output (Eject)
6				ATT	O	Line out mute control output
7					O	Power amplifier mute control output
				A ATT
8			PLL DI		I	PLL IC data input
9				VSSO	—	Ground pin
10				VDDO	—	Power supply pin (+5 V)
11		PLL CLK			O	PLL IC clock output
12		PLL DO			O	PLL IC data output
13		PLL CE			O	PLL IC chip enable output
14				BEEP	O	BEEP output of key beep, caution alarm
15			L V CE		O	Electric volume, LCD chip enable output
16		L V DO			O	Electric volume, LCD data output
17		L V CLK			O	Electric volume, LCD clock output
18			BUS SI		I	BUS interface serial input
19		BUS SO			O	BUS interface serial output
20	BUS CLK				I	BUS interface serial clock input
21	BUS CK GEN				O	BUS interface serial clock output
22		AM ON			O	Tuner AM power supply control output
23			FM ON		O	Tuner FM power supply control output
24				VDD1	—	Power supply pin (+5 V)
25				AVSS	—	Ground pin
26			ST IND		I	FM stereo detection input
27				PH3	I	PH3 detection input (Not used in this set.)
28	S METER				I	S meter signal input
29				KEY0	I	A/D key input 0
30				KEY1	I	A/D key input 1
31	ROTARY (AD)				I	Not used in this set.
32		DST SEL			I	Destination select input (Connect to ground in this set.)
33				TEST	I	Force test mode input
34			AVREF		—	A/D converter power supply pin (+5 V)
35		LCD INH			O	INHIBIT control output of LCD
36					I	Reset input (“ L” : reset detection)
			RESET
37				XT2	O	Sub clock output (32.768 kHz)
38				XT1	I	Sub clock input (32.768 kHz)
39				IC	—	Connect to ground in this set.
40				X2	O	Master clock output (8.38 MHz)
41				X1	I	Master clock input (8.38 MHz)
42				VSS1	—	Ground pin
43	KEY ACK				I	Key acknowledge detection input
44				SIRCS	I	Wireless remote control signal input
45					I	Self switch detection input
		SELF SW
46					I	Backup power supply detection input
				BU IN
47				NOSE	I	Front panel attachment detection input
48		ILL ON			O	Illumination power supply control output
49		A REMO			O	External amplifier remote control output
50		CDM ON			O	CD mechanism deck power supply control output
51		XCD ON			O	CD DSP IC 16 MHz X’tal on/off control output

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