TDA7540N datasheet(41/76 Pages) STMICROELECTRONICS

41 / 76 page

TDA7540N

Software specification

41/76

ACNTH

Adjacent channel narrow band threshold

ACWTH

Adjacent channel wide band threshold

AFSM

AFS influence on stereodecoder mute

AFSON

AFS Pin enable

AINBD

AM IF noise blanker desensitivity

AINBT

AM IF noise blanker threshold

AINT

AM IF noise blanking time

AMAF

AM audio filter

AMD

AM prescaler

AMCF

AM corner frequency

AMIN

AM IF1 input select

AMNBD

AM audio delay for noise blanking

AMON

AM-FM switch

AMSEEK

Set short time constant of AGC in AM seek mode

AMST

AM stereo select

APPM

Application mode quality detection

Charge pump low current

BWCTL

ISS filter fixed bandwith (ISS80) in automatic control

CASF

Check alternative station frequency

Center frequency IF counter

CLKSEP

Clock separation (only for testing)

CTLOFF

Switch off automatic control of ISS filter

CURRH

Set current high charge pump

DAGC

AM narrow band AGC threshold

DEEMP

Stereodecoder deemphasis

DEM

Demodulator offset

DESFT

Stereodecoder deemphasis shift

DEVM

Deviation detector mode

DNB

Demodulator spike blanking threshold

DTH

Deviation detector threshold for ISS filter “OFF”

DWTH

Deviation detector threshold for ISS filter narrow/wide

Frequency error window IF counter

F100K

Corner frequency of AC-mute high pass filter

FMSEEK

ISS time constant change in FM seek mode

HCON

High cut enable

Table 11.

Control register function (continued)

Function

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