SM9403BM Datasheet, PDF (14/18 Pages) Nippon Precision Circuits Inc – DVDRAM Servo-amplifier LSI

SM9403BM
Table 5. Phase difference to voltage converter
coefficient
CG3
CG2
LOW
LOW
LOW
LOW
LOW
HIGH
LOW
HIGH
HIGH
LOW
HIGH
LOW
HIGH
HIGH
HIGH
HIGH
1. Default is 15.2 mV/ns
CG1
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
Coefficient
(mV/ns)¹
5.38
7.58
10.7
15.2
21.4
30.3
42.7
60.6
Table 6. Equalizer control
EQE
LOW
HIGH
1. Default is OFF
Equalizer¹
OFF
ON
Table 7. DPD output control
DPE
DEFECT
LOW
×
×
HIGH
HIGH
LOW
1. Default is VREF2 (DPE = LOW)
DPD output¹
Forced to VREF2
Forced to VREF2
Active
Table 8. DPD delay time coefficient, phase difference to voltage converter coefficient, AC coupling time constant
DG2
DG1
Phase to voltage coefficient
(relative to values in table 5)¹
LOW
LOW
×1
LOW
HIGH
× 1/2
HIGH
LOW
× 1/4
HIGH
HIGH
× 1/8
1. Default is DG2 = DG1 = LOW
DPD-AC coupling time
constant circuit −3dB
frequency
100 kHz
25 kHz
Selected media
8-times CD, DV D - R A M
4-times CD
2-times CD
1-times CD
NIPPON PRECISION CIRCUITS—14