CXA2542AQ
Pin Description
Pin
No.
Symbol
I/O
Equivalent circuit
Description
1
FEI
I
1
147
100k
147
Focus error input.
2
FDFCT
I
2
3µ
Connects the capacitor for defect
time constant.
3
FGD
I
3
147
68k
Ground this pin through a capacitor
for cutting the focus servo high-
frequency gain.
4µ
130k
40k
330k
470k
4
FLB
I
4
External time constant setting pin
for boosting the focus servo low-
frequency.
5
FE_O
O
Focus drive output.
5
12
TA_O
O
12
15
Tracking drive output.
15
SL_O
O
250µ
Sled drive output.
147
90k
6
FE_M
I
6
50k
2µ
Focus amplifier inverted input.
147
7
SRCH
I
7
50k
20k
11µ
External time constant setting pin for
generating the focus search
waveform.
–3–