Sony CDX-GT21W, CDX-GT210, CDX-GT260S service manual Pin No Pin Name Pin Description, Unisi

CDX-GT21W/GT210/GT260/GT260S

Pin No.	Pin Name						I/O	Pin Description
57						NCO	O	Not used. (Open)
58						UNISI	I	S-BUS data signal input
59						UNISO	O	S-BUS data signal output
60		UNISCK					O	S-BUS clock signal output
61	CODEC_SEL						I	Codec select signal input (H: MP3, L: non-MP3)
62		KEYSEL					I	6key/8key distinction signal input (H: 8key, L: 6key)
63						NCO	O	Not used. (Open)
64						SIRCS	I	Remote control signal input
65 to 67						NCO	O	Not used. (Open)
68	FLASH_W						I	Memory mode select signal input	Not used in this set. (Pull up)
69, 70						NCO	O	Not used. (Open)
71							I	Rotary commander shift key signal input		Not used in this set. (Pull up)
					RC_IN1
72							I	Accessory power supply detect signal input
			ACC_IN
73							I	Test mode detect signal input
			TESTIN
74			TELATT				I	Telephone attenuate detect signal input		Not used in this set. (Pull down)
75						NCO	O	Not used. (Open)
76							O	A/D converter power supply control signal output
					AD_ON
77							I	System reset signal input
						RESET
78						NCO	O	Not used. (Open)
79						XOUT	O	Sub clock signal output (32.768kHz)
80						XIN	I	Sub clock signal input (32.768kHz)
81						VSS1	—	Ground
82						OSCIN	I	Main clock signal input (18.432kHz)
83	OSCOUT						O	Main clock signal output (18.432kHz)
84						VCC3	—	Power supply (+3.3 V)
85	DEMOSEL						I	DEMO select signal input (H: DEMO on, L: DEMO off)
86						ATT	O	Audio mute control signal output
87							O	BUS ON signal output
				BUSON
88							O	System reset signal output
		SYSRST
89						NCO	O	Not used. (Open)
90, 91						NCO	O	Not used. (Open)
92						NCO	O	Not used. (Open)
93		Z-MUTE					I	CD zero cross mute detect signal input
94, 95						NCO	O	Not used. (Open)
96	MO-DISP						I	Motion display select signal input	(H: Motion display on, L: Motion display off)
97	DIM_SEL						I	Dimmer select signal input Not used in this set. (Pull down)
98			CD_ON				I	CD mechanism servo power control request signal input
99	CDM_ON						I	CD mechanism deck power control request signal input
100	COL_SW						I	Illumination color select signal input	Not used in this set. (Pull down)

30