S5L1454A 查看數據表（PDF） - Samsung
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S5L1454A Datasheet PDF : 161 Pages
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S5L1454A
DVD PLAYER DIGITAL SERVO & DSP IC
DIGITAL SERVO BLOCK
PRODUCT SUMMARY AND FEATURE
The servo block in chip uses the input signal processed in the RF amplifier and read from the CD-DA/VIDEO-
CD/DVDP Disc. The digital servo block receives the input signal for focus and tracking.
OPERATION DESCRIPTION
NORMAL PLAY
¢º¢º HOME IN
Summary
If a PS signal is not produced after a specified time after moving the P/U from its initial position to the innermost
track using the reverse sled move, it assumes that the P/U has homed in and moves forward for the amount of
time it takes for the P/U to escape the lead in area. Then it finishes the task.
input signal : PS0, PS1
output signal : SLD
operation MODE selection : ( LIM = HDWcmd's factor )
LIM = L
Sled stop determined by the limit S/W
LIM = H
Sled stop determined by the position sensor
COMMAND
SLDcmd(A4xxxx cmd) Transmission
Related REGISTER
REGISTER
SKCKd
FGstp
tHFwd
Address
10C1
0049
004A
FUNCTION
SLED KICK LEVEL (Vref reference)
PS period that determines the sled stop
FWD move time after home in
COMMAND
AFFFF1
ACFFF8
ACFFF9
Operation Description
Sled is moved in the reverse direction. If PS1 or PS0 shows no signal change for a set length of time
(FGstp), forward KICK the sled output for tHFwd, then return to Vref.
PS1
PS0
SLD
SKCKd
FGstp tHFwd
16
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