S5L9250B
DATA SHEET
ARCHITECTURE DESCRIPTION
DIGITAL SERVO
Characteristics
• CD-ROM MAX 48X:
CLV: 4X, 8X
CAV: MAX 12X, 16X, 20X, 24X, 32X, 40X, 48X.
• Servo automatic adjustment:
F/T/SBAD offset, tracking balance, focus bias, F/T loop gain
• F/T input AGC feature that adapts to work with various disc types at an optimum level
• Track search algorithm using speed control method
• Algorithm for handling defects and shocks
• Generates various servo monitor signals: FOK, MIRR, TZC, and ATSC.
• Built-in 10-bit ADC (8ch division):
Samples FE/TE/various channels (1/16int.handling) three times at each fs.
• Built-in 4ch 10-bit DAC (for fod/trd/sled0, sled1 use)
• Disc discriminating data out (FEpk, SBADpk)
• Built-in 16-bit H/W track counter
• MICOM I/F feature: 8-bit parallel interface
• Serial interface with serial interface
Various automatic adjusting control signals, LD on/off, etc.
• Each loop filter's coefficient selection possible through MICOM:
focus normal/down, tracking normal/up, sled filter, various average value filter, BPF for ATSC use, BPF for
loop gain automatic adjustment, etc.
• Sampling frequency: 176.4kHz
• System clock: 33.8688MHz
• 3.3V & 5.0V dual power
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