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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 12
2
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)