Sony XR-C6100 service manual Keyack, Vdd, Avdd, AVREF0, KEYIN1, Bass, Vsm, Keysel

Pin No.		Pin Name	I/O					Function
67		KEYACK	I	Input of acknowledge signal for the key entry Acknowledge signal is input to accept function
				and eject keys in the power off status				On at input of “H”
68		VDD	—	Power supply terminal (+5V)
69		X OUT	O	Main system clock output terminal (5 MHz)
70		X IN	I	Main system clock input terminal (5 MHz)
71		GND	—	Ground terminal
72		XT OUT	O	Sub system clock output terminal (32.768 kHz)
73		XT IN	I	Sub system clock input terminal (32.768 kHz)
74		AVDD	—	Power supply terminal (+5V) (for A/D converter)
75		AVREF0	I	Reference voltage input terminal (+5V) (for A/D converter)
				Key input terminal (A/D input)
76		KEYIN0	I	OFF, SOURCE, MODE *, SEEK AMS + + ), SEEK AMS = 0 –, VOLUME –,
				SEL, VOLUME +, DSPL, ATT keys input (LSW901 to LSW910)
				Key input terminal (A/D input)
77		KEYIN1	I	6, INTRO 1, REPEAT 2, SHUF/a3, BL SKIP 6, ATA 5, BANK/MTL 4, BTM LCL, FILE,
				PRESET DISC +/– keys input (LSW921 to LSW931)
78		D-BASS	I	D-BASS switch (SW951) input (A/D input)
79		VSM	I	FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU1)
80		KEYSEL	I	Setting terminal for the key (fixed at “L”)
*1 loading/tape operation motor control
		MODE	STOP		LOADING/	EJECT/	BRAKE
TERMINAL					FORWARD	REVERSE
	LM LOD (pin #¤)		“L”		“H”	“L”		“H”
	LM EJ (pin #¦)		“L”		“L”	“H”		“H”

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