bu9312aks ROHM Co. Ltd., bu9312aks Datasheet
bu9312aks
Manufacturer Part Number
bu9312aks
Description
Servo Signal Processor For Cd
Manufacturer
ROHM Co. Ltd.
Datasheet
1.BU9312AKS.pdf
(6 pages)
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 miniatur-
ized, low-power-consumption applications.
FApplications
Portable CD players, portable stereos and mini compo-
nent stereo systems
FFeatures
1) Internal PLL circuit, allowing EFM data demodulation
2) Frame synch signal detection and protection.
3) Internal focus, tracking and thread servo filters.
4) Subcode serial output pin.
5) Output pins for P code and Q code.
6) Internal CLV sequencer that automatically sets the
Servo signal processor for CD
BU9312AKS
Optical disc ICs
and bit clock sampling with minimum attached com-
ponents.
Characteristics can be controlled with commands
from the controller.
CLV mode.
10) 16k bits of internal SRAM, for the storage of up to
11) Doubled-speed playback.
7) Internal track jump sequencer that jumps the de-
8) Single-chip IC with deinterleaving function and in-
9) Signals to DAC are output via MSB fast 2’SCOMP
sired number of tracks.
ternal C1 / C2 double error detection, correction
and flag processor.
serial outputs, enabling control of ON / OFF opera-
tion of CD-ROM interpolators.
4 frames of jitters.
79
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bu9312aks Summary of contents
Page 1
... Optical disc ICs Servo signal processor for CD BU9312AKS The BU9312AKS 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 miniatur- ized, low-power-consumption applications. ...
Page 2
... Optical disc ICs FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) FBlock diagram 80 BU9312AKS ...
Page 3
... Optical disc ICs FPin description BU9312AKS 81 ...
Page 4
... Optical disc ICs 82 BU9312AKS ...
Page 5
... Optical disc ICs FInput / output circuits FElectrical characteristics (unless otherwise noted 25_C, V BU9312AKS = 5V ...
Page 6
... Optical disc ICs FExternal dimensions (Units: mm) 84 BU9312AKS ...