Sony NW-MS6 service manual IC PIN Function Description

NW-MS6

5-12. IC PIN FUNCTION DESCRIPTION

•MAIN BOARD IC7001 CXD9534BGG (SYSTEM CONTROLLER)

Pin No.	Pin Name	I/O		Description
1 to 7	D6 to D0	I/O	Two-way data bus with the flash memory (IC5000), S-RAM (IC5600) and CXD1859GA
			(IC8000)
8	VDDIO1	—	Power supply terminal (+2.8V)
9	VSSIO1	—	Ground terminal
10 to 18	A18 to A10	O	Address signal output to the flash memory (IC5000), S-RAM (IC5600) and CXD1859GA
			(IC8000)
19	VDDIO1	—	Power supply terminal (+2.8V)
20 to 28	A9 to A1	O	Address signal output to the flash memory (IC5000), S-RAM (IC5600) and CXD1859GA
			(IC8000)
29	A0	O	Address signal output terminal Not used (open)
30	VSSIO1	—	Ground terminal
31	VDDIO1	—	Power supply terminal (+2.8V)
32	MCLK	O	Not used (open)
33	XRW	O	Not used (open)
34, 35	MAS1, MAS0	O	Not used (open)
36	XOPC	O	Not used (open)
37	XMREQ	O	Not used (open)
38	VSSCORE	—	Ground terminal
39	VDDCORE	—	Power supply terminal (+1.8V)
40	XWAIT	O	Not used (open)
41	XRSTOUT	O	Reset signal output terminal “L”: reset Not used (open)
42, 43	BS1, BS0	O	Not used (open)
44	XOE	O	Output enable signal output to the flash memory (IC5000), S-RAM (IC5600) and CXD1859GA
			(IC8000)	“L” active
45	XWE	O	Write enable signal output to the flash memory (IC5000), S-RAM (IC5600) and CXD1859GA
			(IC8000)	“L” active
46	XUB	O	Write enable signal output to the S-RAM (IC5600) (upper byte)		“L” active
47	XLB	O	Write enable signal output to the S-RAM (IC5600) (lower byte)		“L” active
48	XCS1	O	Chip select signal output to the demultiplexer (IC5800)
49	XCS0	O	Chip select signal output to the flash memory (IC5000)
50	PWM3	O	Not used (open)
51	PWM2	O	Beep sound control signal output
52, 53	PWM1, PWM0	O	Not used (open)
54	VSSIO1	—	Ground terminal
55 to 59	GIOE7 to GIOE3	I	Key input from the console unit
60	RTC CS	O	Chip select signal output to the RV5C348A (IC1001)
61	SAM RST	O	Reset signal output to the CXD1859GA (IC8000)
62	HPBB1, 2	O	Bass boost level control signal output to the headphone amplifier (IC3200)
63	VDDIO1	—	Power supply terminal (+2.8V)
64	ATCRO	O	System wake up signal output to the WAKE0 (pin u;)
65	VSSIO1	—	Ground terminal
66	WAKE4	I	System wake up signal from the reset signal generator (IC9007)
			Input the signal, when inserts the rechargeable battery
67	WAKE3	I	System wake up signal from the CXD1859GA (IC8000) or voltage detector (IC9002)
			Input the signal, when input the USB power
68	WAKE2	I	Interrupt request signal input from the CXD1859GA (IC8000)

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