Sony MDS-JE640 specifications Hlda/Ale

Pin No.	Pin Name	I/O	Function
55	HLDA/ALE	O	Microprocessor mode output. (Not used.)
56	MNT2 (XBUSY)	I	In the state of executive command from the CXD2662R
57	VSS	—	Ground.
58	(MNT1) SHCK	I	Track jump signal input from the CXD2662R
59	VCC	—	Power supply. (+3.3V)
60	EEP-WP	O	EEP-ROM write protect signal output. L: write possibility
61	SDA	I/O	Data signal input/output pin with the EEP-ROM.
62	BUS CLK	O	Not used.
63	OE	O	Read signal output.
64	BHE CASH	O	Not used.
65	WE R/W	O	Write signal output.
66	SCL	O	Clock signal output to the EEP-ROM.
67	REFLECT-SW	I	Disk reflection rate detection input from the reflect detection switch. H: Disk with low reflection rate
68	PROTECT-SW	I	Recording-protection claw detection input from the protection detection switch. H: Protect
69	CS0	O	Chip select signal output to the Flash ROM.
70	CS1	O	Not used.
71	CS2	O	Not used.
72	A20	O	Not used.
73	A19	O	Address bus signal output to Flash ROM.
74	VCC	—	Power supply. (+3.3V)
75	A18	O	Address bus signal output to Flash ROM.
76	VSS	—	Ground
77 to 85	A17 to A9	O	Address bus signal output to Flash ROM.
86 to 89	MODEL SEL 1 to 4	O	Not used.
90	WP	O	Write protect signal to the Flash ROM.
91	VCC	—	Power supply. (+3.3V)
92	A8	O	Address bus signal output to Flash ROM.
93	VCC	—	Power supply. (+3.3V)
94 to 101	A7 to A0 LB	O	Address bus signal output to Flash ROM.
102 to 113	D15 to D4	I/O	Data bus signal input/output to the Flash ROM.
114	K.B-CLK-CTRL	O	Keyboard clock ON/OFF signal output. L: OFF H: ON
115	IIC BUSY	O	IIC cable connect check. L: Active
116	K.B-DATA	O	Keyboard data output.
117, 118	REC-VOL B, A	O	Not used.
119 to 122	D3 to D0	I/O	Data bus signal input/output to the Flash ROM.
123, 124	JOG1, JOG0	I	Jog dial pulse input from the rotary encoder.
125	LATCH(DA)	O	Not used.
126	REC	O	Mute signal output when Beep Rec.
127	NC	O	Not used.
128	CS(FL)	O	Chip select signal output to the display driver.
129	POWER(IIC)	O	Media commucator start-up check.
130	VSS	—	Ground.
131	STB	O	Strobe signal output to the power supply circuit. H: Power supply ON: L: standby
132	VCC	—	Power supply. (+3.3V)
133	IOP	I	Optical Pick-up voltage (current) detect signal input.
134	(A/D-6)	I	Model discrimination.
135	(A/D-5)	I	Model discrimination.
136	TIMER/BEEP SW	I	Timer mode select signal input.
137 to 139	KEY 3 to KEY 1	I	Key input pin (A/D input)
140	AVSS	—	Ground. (Analog)
141	KEY0	I	A/D reference voltage.
142	VREF	—	Power supply. (+3.3V)
143	AVCC	—	Power supply. (+3.3V)
144	NC	I	Not used.

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