Sony CDP-CE575 service manual MAIN BOARD IC301 CXP84648-085QSYSTEM CONTROLLER

CDP-CE575

•MAIN BOARD IC301 CXP84648-085Q (SYSTEM CONTROLLER)

Pin No.		Pin Name	I/O		Description
1 to 4		A3 to A6	O	Address signal output to the static RAM (IC302)
5		GND	—	Ground terminal
6 to 13		D0 to D7	I/O	Two-way data bus with the static RAM (IC302)
14		CE	O	Chip select signal output to the static RAM (IC302)
15 to 18		NC	—	Not used (open)
19		WE	O	Write enable signal output to the static RAM (IC302)
20	LOAD OUT		O	Loading motor (M10) drive signal output to the BA6780 (IC11)
21		LOAD IN	O	Loading motor (M10) drive signal output to the BA6780 (IC11)
22		FL CLK	O	Serial data transfer clock signal output to the FL driver (IC801)
23		FL DATA	O	Serial data output to the FL driver (IC801)
24		FL RST	O	Reset signal output to the FL driver (IC801)
25 to 27	A13, A14, A7		O	Address signal output to the static RAM (IC302)
28		DSENS	I	Detect signal input from the disc sensor (D11)
29		NC	—	Not used (open)
30		RST	I	System reset signal input from the reset signal generator (IC603) “L”: reset
				For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
31		EXTAL	I	Main system clock input terminal (10 MHz)
32		XTAL	O	Main system clock output terminal (10 MHz)
33		VSS	—	Ground terminal
34		TX	O	Sub system clock output terminal	Not used (open)
35		TEX	I	Sub system clock input terminal	Not used (fixed at “L”)
36		AVSS	—	Ground terminal (for A/D converter)
37		AVREF	I	Reference voltage input terminal (+5V)
38		NC	—	Not used (open)
39		VERSION	I	Model Destination setting terminal
40		ADJ	I	Setting terminal for the test mode
41		KEY4	I	Key input terminal (A/D input) (S941 to S845)		FADER, PEAK SEARCH, CLEAR, CHECK,
				EDIT keys input
42		KEY3	I	Key input terminal (A/D input) (S831 to S838)		DISC 5, DISC 4, DISC 3, DISC 2, DISC 1,
				CONTINUE, SHUFFLE, PROGRAM keys input
43		KEY2	I	Key input terminal (A/D input) (S821 to S827)		MEGA CONTROL, X-FADER NO DELAY,
				MENU, m(AMS–), M(AMS+), TIME/TEXT, REPEAT keys input
44		KEY1	I	Rotary encoder key input terminal (A/D input) (S801, S811 to S815) lAMS L(DISC)
				PUSH ENTER, H, X, s, EX-CHANGE, DISC SKIP keys input
45		NC	—	Not used (open)
46		TSENS	I	Detect signal input from the table sensor (D10)
47		FLT	O	Serial data latch pulse output to the FL driver (IC801)
48		CLK	O	Serial data transfer clock signal output to the CXD2587Q (IC101)
49		NC	O	Not used (open)
50		DATA	O	Serial data output to the CXD2587Q (IC101)
51		SQCK	O	Sub-code Q data reading clock signal output to the CXD2587Q (IC101)
52		SQSO	I	Sub-code Q data signal input from the CXD2587Q (IC101)
53		NC	—	Not used (open)
54		SENSE	I	Internal status (SENSE) signal input from the CXD2587Q (IC101)
55		NC	I	Not used (fixed at “H”)
56		RMIN	I	Remote control signal input from the remote control receiver (IC802)

34