Sony MZ-N510CK service manual Not used connected to the ground

MZ-N510CK

Pin No.	Pin Name	I/O					Description
166	WK_DET	I	Set key WAKE detection signal input
167	BATT_MON	I	External battery voltage monitor input				Not used (connected to the ground)
168	HALF_LOCK_SW	I	Open button detection switch input (A/D input) “L” : the open button is pressed
169	RMC_KEY	I	Key input (A/D input) from the remote commander
170	JOG_PUSH	I	Jog dial push detection signal input Not used (open)
171	REC_KEY/PLAY_KEY	I	REC key input (A/D input)
172	END_SEARCH	I	END SEARCH key input (A/D input)				Not used (open)
173	RADIO_ON	I	RADIO ON detection signal input
174	RMC_DTCK	I/O	TSB master data clock input/output or SSB data input/output
175	UDP	I/O	USB data (+) input terminal
176	UDM	I/O	USB data (-) input terminal
177	SUSPEND	O	USB suspend signal output		Not used (open)
178	UPUEN	O	USB pull-up resistor connection control output terminal
179	UOSCI	I	Resonator (48MHz) connection terminal for the USB oscillation circuit
180	UOSCO	O	Resonator (48MHz) connection terminal for the USB oscillation circuit
181	SI3	I	Not used (connected to the ground)
182	SO3	O	Not used (open)
183	SCK3	I/O	Not used (open)
184	MSIN	I	Not used (connected to the ground)
185	MSOUT	O	Not used (open)
186	MSCK	I/O	Not used (open)
187	RF_PWR	O	Power supply control signal output to the RF amplifier Not used (open)
188	LCD_PWR	O	Power supply control signal output to the liquid crystal display module Not used (open)
189	SP_AMP	O	Built-in speaker control signal output				“H”: activate Not used (open)
190	XHP_DET	I	Headphone jack detection signal input				Not used (open)
191	SET_CODE0	I	Input terminal for the set (fixed at “L” in this set)
192	SET_CODE1	I	Input terminal for the set (fixed at “L” in this set)
193	SET_CODE2	I	Input terminal for the set (fixed at “L” in this set)
194	SET_CODE3	I	Input terminal for the set (open in this set)
195, 196	NC	O	Not used (open)
197	VBUS5V_DET	I	USB power supply voltage detection terminal 2					Not used (open)
198	LG_DCR_CTL	O	LG DCR control signal output			Not used (open)
199	MUTE	O	Analog muting control signal output to the headphone amplifier “H”: muting ON
200	CLV_PWR_SEL	O	CLV motor power supply selection control signal output Not used (open)
201	CS_RTC	O	Chip select signal output to the real time clock Not used (open)
202 to 204	MODE1 to 3	O	Power supply control signal output for the over write head to the REC driver
205, 206	HD_CON_1, 2	O	Over write head control signal output to the REC driver
207	TAT	I	Not used (open)
208	TAN	I	Not used (open)
209	NAR	I	Not used (open)
210	IOD	I	Not used (open)
211	SAK	O	Not used (open)
212	XRST	I	System reset signal input from the power control					“L”: reset
213	TRST	I	Terminal for the test mode setting (normally fixed at “L”)
214, 215	TEST0, 1	I	Input terminal for the main test (normally fixed at “L”)
216 to 231	D0 to 15	—	DRAM data0 to 15 terminal		Not used (open)
232 to 245	A00 to 13	—	DRAM address0 to 13 terminal			Not used (open)
246	XCAS	—	DRAM CAS terminal	Not used (open)
247	XRAS	—	DRAM RAS terminal	Not used (open)
248	XWE	—	DRAM write enable terminal			Not used (open)

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