Servo signal processor
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Optical disc ICs
Servo signal processor for CD
BU9312AKS
The BU9312AKS is a CD servo signal proces...
Description
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Optical disc ICs
Servo signal processor for CD
BU9312AKS
The BU9312AKS is a CD servo signal processing IC that contains a speed doubling unadjusted PLL, program servo, and signal processor, and that delivers low voltage operation and low power consumption. This IC is ideal for miniaturized, low-power-consumption applications.
FApplications Portable CD players, portable stereos and mini component stereo systems
FFeatures 1) Internal PLL circuit, allowing EFM data demodulation and bit clock sampling with minimum attached components. 2) Frame synch signal detection and protection. 3) Internal focus, tracking and thread servo filters. Characteristics can be controlled with commands from the controller. 4) Subcode serial output pin. 5) Output pins for P code and Q code. 6) Internal CLV sequencer that automatically sets the CLV mode.
7) Internal track jump sequencer that jumps the desired number of tracks. 8) Single-chip IC with deinterleaving function and internal C1 / C2 double error detection, correction and flag processor. 9) Signals to DAC are output via MSB fast 2’SCOMP serial outputs, enabling control of ON / OFF operation of CD-ROM interpolators. 10) 16k bits of internal SRAM, for the storage of up to ± 4 frames of jitters. 11) Doubled-speed playback.
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Optical disc ICs
FAbsolute maximum ratings (Ta = 25_C)
BU9312AKS
FRecommended operating conditions (Ta = 25_C)
FBlock diagram
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Optical disc ICs
FPin description
BU9312AKS
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