MN662785TBUC Datasheet, PDF (23/89 Pages) Panasonic Semiconductor – LSI FOR COMPACT DISC/CD ROM PLAYER

MN662785TBUC
(A) Setting of automatic adjustment value


ɹɹɹFG0ɹ (Focus gain mantissa part)
,
ɹɹɹFEXP0ɹ (Focus gain exponent part)
,
ɹɹɹFBALɹ (Focus balance adjustment value) ,
ɹɹɹFOFS (Focus offset adjustment value) ,
ɹɹɹFES (Disturbance amplitude
in focus gain adjustment)
ɹɹɹTES (Disturbance amplitude
in tracking gain adjustment)
TG0
TEXP0
TBAL
TOFS
(Tracking gain mantissa part)
(Tracking gain exponent part)
(Tracking balance adjustment value)
(Tracking offset adjustment value)
Table 7-1-4 (3)
Data
(D7 to D0)
Address
(HEX)
(A7 to A0)
Command (HEX)
(B7 to B0)
Function


D7 D6 D5 D4 D3 D2 D1 D0 00
F2
Focus gain constant (FG0)
Setting
at reset
ɹɹ202
(8-bit mantissa)ɹɹ (1 to 255)
D7 D6 D5 D4 D3 D2 D1 D0 01
Focus gain constant (FEXP0)
ɹɹ 2
(8-bit exponent)ɹɹ(0 to 7) (Note)
(Focus gain constant = mantissa / 2^8-FEXP0)
D7 D6 D5 D4 D3 D2 D1 D0 02
Focus balance constant (FBAL)
ɹɹɹ0
(8-bit 2' s complement) (ʵ128 to +127)
D7 D6 D5 D4 D3 D2 D1 D0 03
Focus offset constant (FOFS)
ɹɹɹ0
(8-bit 2' s complement) (ʵ128 to +127)
D7 D6 D5 D4 D3 D2 D1 D0 04
Tracking gain constant (TG0)
ɹɹ150
(8-bit mantissa)ɹɹ (1 to 255)
D7 D6 D5 D4 D3 D2 D1 D0 05
Tracking gain constant (TEXP0)
ɹɹ 1
(8-bit exponent)ɹɹ(0 to 7) (Note)
(Tracking gain constant = mantissa / 2^8-TEXP0)
D7 D6 D5 D4 D3 D2 D1 D0 06
Tracking balance constant (TBAL)
ɹɹɹ0
(8-bit 2' s complement) (ʵ128 to +127)
D7 D6 D5 D4 D3 D2 D1 D0 07
Tracking offset constant (TOFS)
ɹɹɹ0
(8-bit 2' s complement) (ʵ128 to +127)
D7 D6 D5 D4 D3 D2 D1 D0 16
Disturbance amplitude in focus gain ɹ
ɹ 85
adjustment (FES)
(1 to 127)
D7 D6 D5 D4 D3 D2 D1 D0 17
Disturbance amplitude in tracking gainɹɹ
85
adjustment (TES)
(1 to 127)
(Note) The operation may fluctuate when FEXP0 or TEXP0 setting is 5 or more.
FEXP0/TEXP0 corresponding setting table
MN662783
MN662785
128 64
12
32 16
34
SDD00026AEM
23