MN66279RSC Datasheet, PDF (38/96 Pages) Panasonic Semiconductor – LSI FOR COMPACT DISC/CD ROM PLAYER

MN662790RSC


(F)ɹOptical servo system setting
ɹ
ɹ(F)-1ɹFocus search settingɹɹɹɹɹɹɹɹɹɹɹɹɹ
Data (8 bits)
Address Command (HEX)
(8 bits)
(B7 to B0)
Function
Table 7-1-3 (17)
Setting
at reset
0 D6 D5 D4 D3 D2 D1 D0
18
D0
19
F2
Focus search amplitude (CRAM2) setting
ɹ45
ɹɹ 8-bit data (p-p)ɹɹ(40 to 127)
ɹɹɹɹɹɹɹɹɹɹɹɹ
Focus search/disc detection direction (SD)
ɹ0
setting
ɹɹɹ 8-bit dataɹɹɹɹ(0, 1)
ɹ ɹ(0: Reducing FOD) ɹ
Note 1) In focus search/disc detection direction setting, a value of SD will change automatically according to
execution of a focus search/disc detection. Consequently, the values written by initial setting and DTMS
may have changed when they are read out with DTSM. If you want to perform a focus search/disc detection
from the same direction every time, it is necessary to set with DTMS every time before the focus search/disc
detection.
To make SD settings, check the SD value with the DTSM so that no bit values other than the set bit value
will change.
(F)-2ɹSetting of tracking servo fail-safe value (CRAM3)ɹɹɹɹɹɹɹɹɹ
Data (8 bits)
Address Command (HEX)
(8 bits)
(B7 to B0)
Function
0 D6 D5 D4 D3 D2 D1 D0
1C
F2
Fail-safe value clip level
ɹ8-bit dataɹ(0 to 127)
Table 7-1-3 (18)
Setting
at reset
ɹ72
Low-band component of drive output in the
tracking brake mode is clipped at the specified
value.
(F)-3ɹSetting of disturbance amplitude (CRAM4) in tracking balance adjustmentɹɹɹ
Data (8 bits)
Address Command (HEX)
(8 bits)
(B7 to B0)
Function
ɹTable 7-1-3 (19)
Setting
at reset
0 D6 D5 D4 D3 D2 D1 D0
1D
F2
Disturbance amplitude (one side)
72
ɹ8-bit dataɹɹɹ(0 to 127)
ɹɹɹɹɹɹɹɹ
Amplitude of the disturbance waves input in
the tracking balance adjustment is set.
Actual disturbance amplitude is 1/8Ê·CRAM4.
SDD00025AEM
38