STV82X8 datasheet(84/157 Pages) STMICROELECTRONICS

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STV82x8

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12.12 Audio PreProcessing & Selection

PRESCALE_DEMOD_MONO

Prescale for Demod MONO

PRESCALE_DEMOD_STEREO

Prescale for Stereo Demodulation

Address: 94h

Type: R/W

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

PRESCALE_D

EMOD_SELEC

T_SAP

PRESCALE_DEMOD_MONO[6:0] (S)

Bit Name

Reset

Function

PRESCALE_DEMO

D_SELECT_SAP

Select the prescale value to apply on channel 0 (Mono/Stereo):

Apply STEREO Prescale (95h) to the demodulated signal. To be used in case of STEREO

demodulation.

Apply MONO Prescale (94h) on left channel and SAP Prescale (96h) on right channel to

the demodulated signal. To be used in case of MONO or SAP demodulation.

PRESCALE_DEMO

D_MONO[6:0]

000 0000

Set the prescale of the signal coming from the demodulator when MONO (Channel 0):

101 0000:

-12 dB

...

000 0000:

0 dB

000 0001:

0.5 dB

...

011 0000:

24 dB

Address: 95h

Type: R/W

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

PRESCALE_DEMOD_STEREO[6:0] (S)

Bit Name

Reset

Function

Bits[7]

Reserved.

PRESCALE_DEMO

D_STEREO[6:0]

000 0000

Sets the prescale value of the Stereo signal coming from the demodulator (Channels 0 and 1):

101 0000:

-12 dB

...

000 0000:

0 dB

000 0001:

0.5 dB

...

011 0000:

24 dB

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