TDA7541W datasheet(44/76 Pages) STMICROELECTRONICS

44 / 76 page

Software specification

TDA7541

44/76

5.2

Control register function

Table 14.

I2C control bit description

Name

Function

ACF

Adjacent channel detector filter select

ACMD

Adjacent channel mute depth

ACMTH

Adjacent channel mute threshold

ACTH

Adjacent channel detector threshold

AINENA

AM IF noise blanker enable

AINT

AM IF noise blanking time

AINTH

AM IF noise blanker threshold

AMCF

Stereo decoder attenuation @ 3.5kHz

AMD

AM VCO predivider

ASFC

Alternative station frequency check in FM (AGC and weak signal mute on hold)

ASI

Audio signal inversion

BWDEF

Enables bit ISSBW for ISS bandwidth control

DAGC

AM narrow band AGC threshold

DEEMP

Stereo decoder deemphasis

DSB

FM demodulator spike blanker

DTH

Deviation detector threshold for ISS filter “OFF”

DWTH

Deviation detector threshold for ISS filter 120KHz

IF counter frequency error window

EWEXP

Expanded IF counter error window

FMON

Internal switch FM-AM mode

FSWO

Weighted fieldstrength with offset adjust

HCENA

High cut enable

HCHT

Start level high cut

HCLT

Stop level high cut

HCMAX

Maximum high cut depth

ICP

Charge pump current tuner PLL

IF1G

IF1 Amplifier Gain

IF2A

IF2 LC band pass fine adjust

IF2Q

IF2 LC band pass quality adjust

IFAGC

FM/AM IF AGC threshold

IFAGCS

AM IFAGC threshold shift

IFS

IF counter sampling time

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