S1L9223B02 Datasheet, PDF (29/36 Pages) Samsung semiconductor – RF AMP & SERVO SIGNAL PROCESSOR

RF AMP & SERVO SIGNAL PROCESSOR
S1L9223B02
0V
Figure 17. Waveform at Pin 3 When FS1 Is Switched from 0 to 1
The waveform of servo output pin according to FS1 and FS2 switches is as below.
$00 02 03
02
03
02
03
00
Figure 18. Focus Search Waveform at Pin 48 by $02 and $03
FS4 is switch for on/off control of focus servo loop
$00: Focus servo off
$08: Focus servo on
Tracking Control ($1X)
This command is used for tracking loop gain control, break circuit and anti-shock on/off control.
D7
D6
D5
D4
D3
0
0
0
1
Anti shock
on/off
D2
Break circuit
on/off
D1
D0
TG2 TG1
ISTAT
Anti shock
TG2 and TG1 are internal switch for tracking gain set.
Tracking mode ($2X)
This command is used for tracking and sled servo on/off and jump for searching track.
D7
D6
D5
D4
0
0
1
0
D3
D2
Tracking control
D1
D0
Sled control
ISTAT
TZC
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