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55
1.4.2 Servo Pin List
Pin Name
Pin No.
I/O
Destination
Function
DEFECT 51 I
AFE
Defect
(scratch
detect)
signal
BLANK
57
I
AFE
Blank signal input (also connected to the H8S interrupt port
INT5)
TZC 58
I
AFE
Tracking
Zero
Crossing
signal
input
SFG
86
IU
DRVR
Spindle FG pulse (also input to the H8S interrupt port INT4)
TLD 87
TO
DRVR
Tilt
drive
signal
(PWM
output)
SPD 88
TO
DRVR
Spindle
drive
signal
(PWM
output)
LDD 89
TO
DRVR
Loading
drive
signal
(PWM
output)
LED 90
TO
PU LPS_LED
control
signal
(PWM
output)
FE
100
AI
AFE
Focus error: sampled at 352.8 kHz
PE 101
AI
AFE
Laser
power
error
: sampled at 176.4 kHz
SIGM 102
AI
AFE Signal
monitor:
sampled
at
176.4
kHz
TE
103
AI
AFE
Tracking error: sampled at 352.8 kHz
LPSA 104
AI
AFE Lens
positioning/lens
error
: sampled at 88.2 kHz
LPSB 105
AI
AFE Lens
positioning
B
: sampled at 88.2 kHz
TCPH 106
AI
AFE Tracking
center/BETA
top
hold
: sampled at 44.1/176.4 kHz
TIBH
107
AI
AFE
Tilt error/BETA bottom hold: sampled at 44.1/176.4 kHz
BCENT
108
AI
AFE
BETA center: sampled at 176.4 kHz
VRDC2N
109
AI
AFE
APC read system laser driver control pin: sampled at 176.4
kHz
VRDC2NREF
112
AI
OP Amp
APC reference voltage input: sampled at 88.2 kHz
PUTEMP
113
AI
PU
Pick-up temperature monitor input: sampled at 88.2 kHz
DRVOFSP
DRVOFSM
114
115
AI DRVR
Driver
offset
adjustment
input
(plus/minus)
sampled at 88.2 kHz
FOD 116
AO
DRVR
Focus
control
signal
TRD
117
AO
DRVR
Tracking control signal
TVDP
TVDN
118
119
AO
DRVR
Sled drive signal (normal phase)
Sled drive signal (counter phase)
DAVC 120
AO
DRVR
Servo
system
Vcc/2
voltage
output
pin