54
MDS-NT1
Pin No.
Pin Name
I/O
Description
100
APC
O
Reference PWM signal output to the RF amplifier for the laser automatic power control
101
LDDR
O
PWM signal output terminal for laser digital automatic power control Not used
102
TRDR
O
Tracking servo drive PWM signal (–) output
103
TFDR
O
Tracking servo drive PWM signal (+) output
104
FFDR
O
Focus servo drive PWM signal (+) output
105
FRDR
O
Focus servo drive PWM signal (–) output
106
FS4
O
Clock signal (176.4 kHz) output terminal (X’tal system) Not used
107
SRDR
O
Sled servo drive PWM signal (–) output
108
SFDR
O
Sled servo drive PWM signal (+) output
109
SPRD
O
Spindle servo drive PWM signal (–) output
110
SPFD
O
Spindle servo drive PWM signal (+) output
111
FGIN
I
FG input terminal for spindle servo Not used
112 to 114
TST1 to TST3
I
Input terminal for the test
115
EFMO
O
EFM signal output terminal when recording mode “L” is output when playback mode
116
VDIO1
—
Power supply terminal (+3.3V) (for I/O)
117
VSIO1
—
Ground terminal (for I/O)
118
VDC4
—
Power supply terminal (+2.5V) (for core)
119
VSC4
—
Ground terminal (for core)
120
MDDT1
I
MD data mode selection signal input terminal
“L”: normal mode, “H”: MD data mode (fixed at “L” in this set)
