KS9287 View Datasheet(PDF) - Samsung

Part Name

Description

Manufacturer

KS9287

DIGITAL SIGNAL PROCESSOR

Samsung 

DIGITAL SIGNAL PROCESSOR

KS9287

INTERPOLATION / MUTE

Interpolator

If a burst error occurs on the disc, sometimes data cannot be corrected even if you carry out the ECC process. The

Interpolator block uses the ECCs C2 pointer to interpolate the data.

The audio data is input into the Data bus in the following order: for each L/R-ch: 8-bit C2 point, lower data 8-bit, and

upper data 8-bit.

If C2P0 pin is H, and one error has occurred, the average value interpolation is carried out, and if 3 consecutive

errors occurred, the previous value hold interpolation is carried out.

For one period of LRCH, if LRCH is L, R-ch data is output, and if H, L-ch data is output. Please refer to Figure 7 for

the Interpolator blocks Timing Chart.

A

B

C

H

I

G

J

D

E

F

C2

Pointer

B : Average value Interpolation

F , E , D : Previous value Hold Interpolation

G : Average value Interpolation

Figure 9. Interpolation Method

Mute/Attenuation

The audio data can be muted or weakened by the ATTM signal of the MUTE pin and CNTL-S register.

• Zero Cross Mute

The audio data is muted when the CNTL-Z registers ZCMT is H, mute is H, and the upper 6 bits of audio data

are all H.

•Muting

The audio data is in Muting is the CNTL-Z registers ZCMT is L and the Mute pin is H.

•Attenuation

Audio signal is weakened by the CNTL-Z registers ATTM and Mute signal.

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