Sony Ericsson XR-C7500RX service manual Dsplat

Pin No.	Pin Name		I/O		Description
35	DSPLAT		O	Serial data latch pulse output to the CXD2726Q (IC100)
36	DSPRST		O	Reset signal output to the CXD2726Q (IC100) “L”: reset
37		NC	O	Not used (open)
38	DVCC		—	Power supply terminal (+5V) (for D/A converter)
39		DVSS	—	Ground terminal (for D/A converter)
40, 41		NC	O	Not used (open)
42	AVCC		—	Power supply terminal (+5V) (for analog system)
43	AVRH		I	Reference voltage (+5V) input terminal (for A/D converter)
44	AVRL		I	Reference voltage (0V) input terminal (for A/D converter)
45		AVSS	—	Ground terminal (for analog system)
46	KEYIN0			Key input terminal (A/D input) (LSW901 to LSW908, S901 to S904)
			I	OFF, SOURCE, SOUND EQ, MENU, PTY DSPL, LIST, ENTER, oMODE, SEEK/AMS -
				.m+ >M, DISC/PRST +, DISC/PRST – keys input
47	KEYIN1		I	Key input terminal (A/D input) (LSW801, LSW909 to LSW917)
				Z, DSO, TA, AF, 6 to 3 SHUF 2, REP 1 keys input
48	RCIN0		I	Rotary remote commander key input terminal (A/D input)
49	DSTSEL		I	Destination setting terminal (A/D input)	“L”: XR-C7500R/C7500RX: TYPE A,
				“M”: XR-C7500R/C7500RX: TYPE C, “H”: XR-C7500R/C7500RX: TYPE B
50	QUALITY		I	Noise level detection signal input at SEEK mode (A/D input)
51	FMAGC		I	FM AGC detection signal input from the FM/AM tuner unit (TUX1) (A/D input)
52	MPTH		I	Multi-path detection signal input from the RDS decoder (IC50) (A/D input)
53		VSM	I	FM and AM signal meter voltage detection input from the FM/AM tuner unit (TUX1) (A/D input)
54		VCC	—	Power supply terminal (+5V)
55	AMP ON		O	Standby on/off control signal output to the power amplifier (IC700)
				“L”: standby mode, “H”: amp on
56	NS-MASK		O	Discharge control signal output for the noise detection circuit “H”: discharge
57	MTLOUT		O	METAL on/off control signal output to the CXA2510AQ (IC250)			“H”: METAL on
58		REEL	I	Rotation detect signal input from supply reel sensor and take-up reel sensor on the deck
				mechanism
59	LM-EJ		O	Motor drive signal output to the loading/tape operation motor drive (IC201)				“H” active
				(For the eject direction and reverse side operation) *1
60	LM-LOD		O	Motor drive signal output to the loading/tape operation motor drive (IC201)				“H” active
				(For the loading direction and forward side operation)		*1
61	CM ON		O	Capstan/reel motor (M901) drive signal output terminal		“H”: motor on
62	TAPE ON		O	Tape system power supply on/off control signal output terminal			“H”: tape on
63		VSS	—	Ground terminal
64		NC	I	Not used (fixed at “L”)
65		POS0	I		POS0: “L”: EJECT mode, “H”: others mode
				Tape position (EJECT/FF/REW/REV/
66		POS1	I
					POS1: “L”: FF and FWD mode, “H”: others mode
				FWD mode) detect input from the tape
67		POS2	I		POS2: “L”: REW mode, “H”: others mode
				operation switch on the deck mechanism
					POS3: “L”: REV and EJECT mode, “H”: others mode
68		POS3	I
69	FLASH-W		I	Internal flash memory data write mode detection signal input terminal “L”: data write mode
				Not used (fixed at “H”)
70	I2C SDA		I/O	Two-way data I2C bus with the FM/AM tuner unit (TUX1), RDS decoder (IC50) and electrical
				volume (IC10)
71	I2C SCL		O	I2C bus clock signal output to the FM/AM tuner unit (TUX1), RDS decoder (IC50) and electrical
				volume (IC10)
72	RCIN1		I	Rotary remote commander shift key input terminal

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