42
Pin No.
Pin Name
I/O
Description
89
FRDR
O
Focus servo drive PWM signal (–) output to the BH6511FS (IC303)
90
FS4
O
Clock signal (176.4 kHz) output terminal (X’tal system) Not used (open)
91
SRDR
O
Sled servo drive PWM signal (–) output to the BH6511FS (IC303)
92
SFDR
O
Sled servo drive PWM signal (+) output to the BH6511FS (IC303)
93
SPRD
O
Spindle servo drive PWM signal (–) output to the BH6511FS (IC303)
94
SPFD
O
Spindle servo drive PWM signal (+) output to the BH6511FS (IC303)
95
FGIN
I
Not used (fixed at “L”)
96
TEST1
I
97
TEST2
I
Input terminal for the test (fixed at “L”)
98
TEST3
I
99
DVSS
—
Ground terminal (digital system)
100
EFMO
O
EFM signal output terminal when recording mode Not used (open)
* I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.
