Sony HCD-PX333 VCC3, VSS3, VCC4, VSS4, Clip SEL, I2CBUSY, Dalock, Adpdwn, Spdif-Cut, Optsel, VSS5

HCD-PX333

Pin No.	Pin Name		I/O			Description
74	VCC3		—	Power supply terminal (+3.3V)
75	A18		O	Address signal output		Not used (open)
76	VSS3		—	Ground terminal
77 to 85	A17 to A9		O	Address signal output		Not used (open)
86 to 89	SEL3 to SEL0		I	Model destination setting input terminal
90	WP		O	Writing protect signal output Not used (fixed at “L”)
91	VCC4		—	Power supply terminal (+3.3V)
92	A8		O	Address signal output		Not used (open)
93	VSS4		—	Ground terminal
94 to 100	A7 to A1		O	Address signal output		Not used (open)
			O	Not used (open)
101		LB
102 to 113	D15 to D4		I/O	Two-way data bus	Not used (open)
114	CLIP SEL		O	Not used (open)
115	I2CBUSY		I/O	Busy signal input/output for the IIC bus
116	DALOCK		I	Lock signal input from the D/A converter (IC1006)
117	LINE-MUTE		O	Audio line muting on/off control signal output
118	ADPDWN		O	Power down detection signal output to the A/D converter (IC1005)
119 to 122	D3 to D0		I/O	Two-way data bus	Not used (open)
123	SPDIF-CUT		O	MD/CD digital input selection signal output terminal Not used (open)
124	OPTSEL		O	CD/optical digital input selection signal output to the digital signal selector (IC1008)
125 to 129		—	O	Not used (open)
130	VSS5		—	Ground terminal
131		—	O	Not used (open)
132	VCC5		—	Power supply terminal (+3.3V)
133	OP-LEVEL		I	Optical pick-up voltage input from the automatic power control circuit
134 to 139		—	O	Not used (open)
140	AVSS		—	Ground terminal (for analog system )
141		—	O	Not used (open)
142	VREF		I	Reference voltage (+3.3V) input terminal (for A/D converter)
143	AVCC		—	Power supply terminal (+3.3V) (for analog system )
144		—	O	Not used (open)

87