CXA2542AR
Pin Description
Pin
No.
Symbol
I/O
Equivalent circuit
Description
1 FEI
I
1
2
2 FDFCT
I
147
100k
147
Focus error input.
3µ
Connects the capacitor for defect
time constant.
3 FGD
I
68k
147
3
130k
4µ
4 FLB
I
40k
330k
4
470k
Ground this pin through a capacitor
for cutting the focus servo high-
frequency gain.
External time constant setting pin
for boosting the focus servo low-
frequency.
5 FE_O
O
5
12 TA_O
O
12
15
15 SL_O
O
Focus drive output.
Tracking drive output.
250µ
Sled drive output.
6 FE_M
I
90k
147
6
50k
2µ
Focus amplifier inverted input.
7 SRCH
I
147
7
50k
20k
11µ
External time constant setting pin for
generating the focus search
waveform.
–3–