LG GSA-4167B User Manual
Page 60
64
Servo Pin List
Pin Name
Pin No.
I/O destination Function
BLANK
156
I
AFE
Blank signal input
(also connected to the H8S interrupt port INT5)
DEFECT
157
I
AFE
Defect (scratch detect) signal
SFG
213
IU
DRVR
Spindle FG pulse
(also input to the H8S interrupt port INT4)
EFG
214
I
PU
Spindle FG pulse for Light Scribe
(also input to the H8S interrupt port INT4)
TLD
212
TO
DRVR
Tilt drive signal (PWM output)
SPD
211
TO
DRVR
Spindle drive signal (PWM output)
LDD
210
TO
DRVR
Loading drive signal (PWM output)
LED
209
TO
PU
LPS_LED control signal (PWM output)
ATZC
172
AI
AFE
Tracking Zero Cross input signal
FE
169
AI
AFE
Focus error: sampled at 352.8 kHz
PE
170
AI
AFE
Laser power error: sampled at 352.8 kHz
SIGM
171
AI
AFE
Signal monitor: sampled at 88.2/176.4 kHz
TE
173
AI
AFE
Tracking error: sampled at 352.8 kHz
LPSA
174
AI
AFE
Lens positioning/lens error: sampled at 88.2 kHz
TCPH
175
AI
AFE
Tracking center/BETA top hold: sampled at 44.1/176.4 kHz
TIBH
176
AI
AFE
Tilt error/BETA bottom hold: sampled at 44.1/176.4 kHz
BCENT
177
AI
AFE
BETA center: sampled at 176.4 kHz
GAD1
179
AI
General AD input: sampled at 88.2 kHz
GAD0(VRDC2N)
178
AI
General AD input: sampled at 176.4 kHz
FOD
180
AO
DRVR
Focus control signal
TRD
181
AO
DRVR
Tracking control signal
TVDP
182
AO
DRVR
Sled drive signal (normal phase)
TVDN
183
Sled drive signal (counter phase)
DAVC
184
AO
DRVR
Servo system Vcc/2 voltage output pin