Sony Ericsson CDP-CX220 service manual Ic Pin Function Description, Pin No, Pin Name

7-12. IC PIN FUNCTION DESCRIPTION

• MAINN BOARD IC501 CXP84340-075Q (SYSTEM CONTROLLER)

Pin No.	Pin Name	I/O			Function
1 to 5	A3 to A7	O
6	A12	O
7	A14	O	Address signal output to the static RAM (IC502)
8 to 11	A11 to A8	O
12	A13	O
13	WE	O	Data write enable signal output to the static RAM (IC502)			“L” active
14	CE	O	Chip enable signal output to the static RAM (IC502) “H” active
15	KBCOUT	O	Serial data transfer clock signal output terminal Not used (open)
16	KBDOUT	O	Serial data output terminal	Not used (open)
17	KBDIN	I	Serial data input terminal	Not used (open)
18	FLDATA	O	Serial data output to the FL driver (IC701) and LED driver (IC702)
19	FLCLK	O	Serial data transfer clock signal output to the FL driver (IC701) and LED driver (IC702)
20	LEDLT	O	Serial data latch pulse output to the LED driver (IC702)			“L” active
21	TBLL	O	Table motor drive signal (counterclockwise) output to the CXA1291P (IC503) “H” active
22	TBLR	O	Table motor drive signal (clockwise) output to the CXA1291P (IC503)					“H” active
23	DRIN	O	Door motor drive signal (door close) output to the CXA1291P (IC503)					“H” active
24	DROUT	O	Door motor drive signal (door open) output to the CXA1291P (IC503)					“H” active
25	ADJ	I	Setting terminal for the test mode		“L”: ADJ mode, Normally: fixed at “H”
26	LDIN	O	Loading motor drive signal (load-in direction) output to the CXA1291P (IC503)						“H” active
27	LDOUT	O	Loading motor drive signal (load-out direction) output to the CXA1291P (IC503)						“H” active
28	BUSOUT	O	Sircs remote control signal output for the S-LINK CONTROL A1				“H” active
29	SMUTE	O	Muting on/off control signal output terminal “H” active			Not used (pull up)
30	RESET	I	System reset signal input from the reset signal generator (IC505)				“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 (+5V) input terminal (for A/D converter)
38	D.SENS	I	Inputs the disc sensor (Q801) detection signal (A/D input)
39	DOORSW	I	Door open/close detect switch (S810) input (A/D input)			“L”: open
40	CD1/2/3	I	COMMAND MODE switch (S901) input terminal (A/D input)
			“L”: CD1, “H”: CD3 (CD2: center voltage input)
41	SW	I	Destination setting terminal (A/D input) Fixed at “L” in this set
42	KEY3	I	Key input terminal (A/D input) p, P, á, CLEAR, CHECK, ± AMS, - AMS, PUSH
			ENTER keys input and rotary encoder jog dial pulse input (S611 to 617 and RE601)
43	KEY2	I	Key input terminal (A/D input) ¤ OPEN/CLOSE, INPUT, MEMO SEARCH keys input and
			rotary encoder jog dial pulse input (S621 to 623 and RE601)
44	KEY1	I	Key input terminal (A/D input)
			I/u, TIME/TEXT, GROUP FILE, GROUP 8/7/6/5 keys input (S731 to 737)
45	KEY0	I	Key input terminal (A/D input)
			REPEAT, PROGRAM, SHUFFLE, CONTINUE, GROUP 4/3/2/1 keys input (S721 to 728)
46	BUSIN	I	Sircs remote control signal input for the S-LINK CONTROL A1				“L” active
47	AMUTE	O	Muting on/off control signal output to the CXD2587Q (IC101) “H”: muting on

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