S5L9250B Datasheet, PDF (29/163 Pages) Samsung semiconductor – The CD-ROM 48X 1 chip receives the input signal read from the CD-DA/VIDEO-CD/CD-ROM disc after handling by the RF amplifier.

DATA SHEET
S5L9250B
Tracking Balance Adjustment Command (TBAcmd)
TBAcmd averages the MAX and MIN values of TE using eccentricity while the focus is on and tracking is off.
Always use before going into play (tracking on).
Code
1'st byte
0F
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
0
0
0
TTBA
TTBA: Test mode for TBA
0: Normal TBA
1: Change tracking balance once without regard to tracking balance ok, then change back to
previous mode.
Hardware Offset Adjust Command (HWOFSTcmd)
HWOFSTcmd is the offset adjustment command for CEI, an input signal for center point control.
Code
1'st byte
10
D7
D6
D5
D4
D3
D2
D1
0
0
0
0
0
0
0
D0
THW0
Adjust the offset of RF's CEI output when HWOFSTcmd is accepted.
THWO: Test mode for HW offset.
0 : Normal HW offset
1: Carry out HW offset adjustment once without regard to HW offset OK, then change back to the previous
mode.
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