Sony MZ-R91 Xlrf, Apcref, Lddr, VDC4, Trdr, Ffdr, FS4, Srdr, Sfdr, VSC4, Sprd, Spfd, Spvs, VDIO3

Pin No.	Pin Name	I/O			Description
103	XLRF	O	Serial latch signal output terminal		Not used (open)
104	CKRF	O	Serial clock signal output terminal		Not used (open)
105	DTRF	O	Writing data output terminal	Not used (open)
106	APCREF	O	Control signal output to the reference voltage generator circuit for the laser automatic power
			control
107	LDDR	O	PWM signal output for the laser automatic power control Not used (open)
108	VDC4	—	Power supply terminal (+1.8V) (for internal logic)
109	TRDR	O	Tracking servo drive PWM signal (–) output to the MPC17A56FTA (IC601)
110	TFDR	O	Tracking servo drive PWM signal (+) output to the MPC17A56FTA (IC601)
111	FFDR	O	Focus servo drive PWM signal (+) output to the MPC17A56FTA (IC601)
112	FRDR	O	Focus servo drive PWM signal (–) output to the MPC17A56FTA (IC601)
113	FS4	O	Clock signal (176.4 kHz) output to the MPC18A20MTAEL (IC603) (X' tal system)
114	SRDR	O	Sled servo drive PWM signal (–) output terminal			Not used (open)
115	SFDR	O	Sled servo drive PWM signal (+) output terminal			Not used (open)
116	VSC4	—	Ground terminal (for internal logic)
117	SPRD	O	Spindle servo drive PWM signal (–) output terminal				Not used (open)
118	SPFD	O	Spindle servo drive PWM signal (+) output terminal				Not used (open)
119	FGIN	I	FG signal input terminal for spindle servo Not used (open)
120 to 122	TEST1 to TEST3	I	Input terminal for the test (normally : fixed at “L”)
123	EFMO	O	EFM signal output when recording mode to the MPC18A20MTAEL (IC603)
124	SPVS	O	Spindle servo drive voltage control signal output to the MPC17A56FTA (IC601)
125	VDIO3	—	Power supply terminal (+2.4V) (for I/O)
126	VSIO3	—	Ground terminal (for I/O)
127	SPDU	O	Spindle servo (U) drive signal output to the MPC17A56FTA (IC601)
128	SPDV	O	Spindle servo (V) drive signal output to the MPC17A56FTA (IC601)
129	SPDW	O	Spindle servo (W) drive signal output to the MPC17A56FTA (IC601)
130	SPCU	I	Spindle servo (U) timing signal input from the MPC17A56FTA (IC601)
131	SPCV	I	Spindle servo (V) timing signal input from the MPC17A56FTA (IC601)
132	SPCW	I	Spindle servo (W) timing signal input from the MPC17A56FTA (IC601)
133	SLDU	O	Sled servo (1+) drive signal output to the MPC17A56FTA (IC601)
134	SLDV	O	Sled servo (1–) drive signal output to the MPC17A56FTA (IC601)
135	SLDW	O	Sled servo (2+) drive signal output to the MPC17A56FTA (IC601)
136	VDC5	—	Power supply terminal (+1.8V) (for internal logic)
137	VSC5	—	Ground terminal (for internal logic)
138	SLCU	I	Sled servo (1) timing signal input from the MPC17A56FTA (IC601)
139	SLCV	I	Sled servo (2) timing signal input from the MPC17A56FTA (IC601)
140	SLCW	O	Sled servo (2–) timing signal output to the MPC17A56FTA (IC601)
141	SLVS	O	Sled servo voltage control signal output to the MPC17A56FTA (IC601)
142	BYPS	O	By-pass transistor control signal output to the MPC17A56FTA (IC601)
143	VSS	—	Ground terminal (for internal 16M bit D-RAM)
144	VDD	—	Power supply terminal (+2.4V) (for internal 16M bit D-RAM)
145	VSS	—	Ground terminal (for internal 16M bit D-RAM)
146	VDD	—	Power supply terminal (+2.4V) (for internal 16M bit D-RAM)
147	IVC	O	Output terminal for the test	Not used (open)

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