Sony MZ-R91 Half Lock, Rmc Key, Set Key, Rec Key, Avref, Avdd, TEST0, TEST1, Trst, TSB Clkctl

Pin No.		Pin Name		I/O			Description
80		VB MON		I	Un-regulator power supply voltage monitor input terminal (A/D input)
81		CHG MON		I	Rechargeable battery voltage monitor input from the MPC18A31FTA (IC901) (A/D input)
82		VREF MON		I	Reference voltage monitor input from the SN761056ADBT (IC501) (A/D input)
83		WK DET		I	Set key starting detect signal input terminal (A/D input)
84		HALF LOCK		I	Open knob detect switch (S802) input terminal “L”: normal position, “H”: open knob slid
			SW
85		RMC KEY		I	Remote commander with headphone key input terminal (A/D input)
86		SET KEY 1		I	Set key input terminal (A/D input)		(x, >, .,VOL +/– keys input)
87		SET KEY 2		I	Set key input terminal (A/D input)		(B, jog, END SEARCH keys input)
88		REC KEY		I	REC key input terminal
89		VRM MON		I	VREM voltage monitor input terminal (A/D input)
90		HIDC MON		I	HI-DC voltage monitor input terminal (A/D input)
91		AD GND		—	Ground terminal (for A/D converter)
92		AVREF		I	Input terminal for power supply voltage adjustment reference voltage (+2.4V) (for A/D converter)
93		AVDD		—	Power supply terminal (+2.4V) (for A/D converter)
94		TEST0		I	Input terminal for the test (normally: fixed at “L”)
95		TEST1		I	Input terminal for the test (normally: fixed at “L”)
96			TDI	I	Input terminal for JTAG	Not used (open)
97		TMS		I	Input terminal for JTAG	Not used (open)
98		TCK		I	Input terminal for JTAG	Not used (open)
99		TRST		I	Input terminal for JTAG	Not used (open)
100		TDO		O	Output terminal for JTAG	Not used (open)
101		TSB CLKCTL		O	TSB clock control signal output terminal
102		SSB DATA		I/O	Two-way SSB serial data bus with the SN761056ADBT (IC501)
103		SSB CLK		O	SSB serial clock signal output to the SN761056ADBT (IC501)
104		FLASH WR EN		—	Not used (fixed at “H”)
105		VDD		—	Power supply terminal (+2.4V)
106		VSS		—	Ground terminal
107 to 109		VLC1 to VLC3		—	Power supply terminal for the liquid crystal display (+2.4V)
110		XCS ADA		O	Chip select signal output to the A/D, D/A converter (IC301)
111		XPD ADA		O	Power supply control signal output to the A/D, D/A converter (IC301)
112		XRST MTR DRV		O	Reset signal output terminal “L”: reset Not used (open)
113		OPT DET		I	DIN plug detect signal input terminal
114		XJACK DET		I	LINE IN plug detect signal input terminal
115		XMIC DET		I	MIC plug detect signal input terminal
116		XOPT CONT		O	Power supply control signal output to the DIN plug laser diode
117		MUTE		O	Analog muting on/off control signal output terminal “L”: muting off, “H”: muting on
118	XHP STBY TMP			O	Power supply control signal output to the headphone amplifier Not used (open)
119		XCS NV		O	Chip select signal output to the EEPROM (IC802)
120		XINT REC SW		O	Not used (open)

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