– 43 –
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 Write 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 (+1.7V) (for internal logic)
109 TRDR O Tracking servo drive PWM signal (–) output to the XC111256FTA (IC551)
110 TFDR O Tracking servo drive PWM signal (+) output to the XC111256FTA (IC551)
111 FFDR O Focus servo drive PWM signal (+) output to the XC111256FTA (IC551)
112 FRDR O Focus servo drive PWM signal (–) output to the XC111256FTA (IC551)
113 FS4 O Clock signal output terminal (X' tal system 176.4 kHz) Not used (open)
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 12
2
TEST1 to TEST3 I Input terminal for the test (normally : fixed at “L”)
123 MTFLGR O Muting applied to analog signal input in non-signal status causes the signal to be “H”
automatically Not used (open)
124 SPVS O Spindle servo drive voltage control signal output to the XC111256FTA (IC551)
125 VDI03 —Power supply terminal (+2.4V) (for I/O cell)
126 VSI03 —Ground terminal (for I/O cell)
127 SPDU O Spindle servo (U) drive signal output to the XC111256FTA (IC551)
128 SPDV O Spindle servo (V) drive signal output to the XC111256FTA (IC551)
129 SPDW O Spindle servo (W) drive signal output to the XC111256FTA (IC551)
130 SPCU I Spindle servo (U) timing signal input from the XC111256FTA (IC551)
131 SPCV I Spindle servo (V) timing signal input from the XC111256FTA (IC551)
132 SPCW I Spindle servo (W) timing signal input from the XC111256FTA (IC551)
133 SLDU O Sled servo (1+) drive signal output to the XC111256FTA (IC551)
134 SLDV O Sled servo (1–) drive signal output to the XC111256FTA (IC551)
135 SLDW O Sled servo (2+) drive signal output to the XC111256FTA (IC551)
136 VDC5 —Power supply terminal (+1.7V) (for internal logic)
137 VSC5 —Ground terminal (for internal logic)
138 SLCU I Sled servo (1) timing signal input from the XC111256FTA (IC551)
139 SLCV I Sled servo (2) timing signal input from the XC111256FTA (IC551)
140 SLCW O Sled servo (2–) timing signal output to the XC111256FTA (IC551)
141 SLVS O Sled servo voltage control signal output to the XC111256FTA (IC551)
142 BYPS O By-pass transistor control signal output terminal Not used (open)
143 DVSSDRAM —Ground terminal (for internal 16M bit D-RAM)
144 DVDDDRAM —Power supply terminal (+2.4V) (for internal 16M bit D-RAM)
145 DVSSDRAM —Ground terminal (for internal 16M bit D-RAM)
146 DVDDDRAM —Power supply terminal (+2.4V) (for internal 16M bit D-RAM)
147 to 168 NC —Not used (open)