Sony MDS-NT1 service manual Play-Sw

MDS-NT1

Pin No.	Pin Name		I/O			Description
50	PLAY-SW		I	Detection input from the playback position detect switch				“L”: active
51	XLATCH		O	Serial data latch pulse signal output to the mechanism deck section
52		SCL	O	Serial clock signal output to the EEPROM
53	OUT-SW		I	Detection signal input from the loading-out detect switch (S103)
				“L” at a load-out position, others: “H”
54	XBUSY		I	Busy monitor signal input from the mechanism deck section
55	SHOCK		I	Track jump detection signal input from the mechanism deck section
56	EEP-WP		O	Writing protect signal output to the EEPROM
57		SDA	I/O	Two-way data bus with the EEPROM
58	REFLECT		I	Detection input from the disc reflection rate detect switch
				“L”: high reflection rate disc, “H”: low reflection rate disc
59	PROTECT SW		I	REC-proof claw detection signal input from the protect detect switch
				“H”: write protect
60		VCC	—	Power supply terminal (+3.3V)
61	EEPNET-WP		—	Not used
62		VSS	—	Ground terminal
63	LD-LOW		O	Loading motor drive voltage control signal output terminal				“H” active
64	LOAD OUT		O	Loading motor control signal (load-in direction) output terminal					“H” at a load-in
65	LOAD OUT		O	Loading motor control signal (eject direction) output terminal “H” at a eject
66 to 69		TEST	I	Test input terminal	Not used
70 to 72		NC	—	Not used
73	NETMD_INT		I	Interrupt status input from the USB interface IC
74	NETMD_XCS		O	Chip select signal output to the USB interface IC
75	NETMD_RESET		O	Reset signal output to the USB interface IC			“L”: reset
76	NETMD_PLLSW		O	PLL function on/off control signal output to the USB interface IC					“L”: PLL on
77	NETMD_VBUS		I	USB connect detection signal input terminal			“H”: USB on
78, 79		NC	—	Not used
80		LED4	O	LED drive signal output terminal Not used
81, 82	LED3, 2		O	LED drive signal output terminal
83		FLCS	—	Not used
84		LED1	O	LED drive signal output terminal
85		JOG0	I	Jog dial pulse input terminal		Not used
86		JOG1	I	Jog dial pulse input terminal		Not used
87		IOP	—	Not used
88		SEL1	I	Destination setting terminal
89		SEL0	I	Model setting terminal
90, 91		NC	—	Not used
92		KEY2	I	key input terminal	Not used
93		KEY1	I	B/> key input terminal
94		AVSS	—	Ground terminal
95		KEY0	I	x/Z key input terminal
96		VREF	I	Reference voltage (+3.3V) input terminal
97		AVCC	—	Power supply terminal (+3.3V)
98		NC	—	Not used
99		FLDT	—	Not used
100		FLCK	—	Not used

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