TDA7540N Datasheet, PDF (42/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS)

Software specification
Table 11. Control register function (continued)
Register Name
Function
IF1T
FM/AM mixer1 tank adjust
IF2T
AM mixer2 tank adjust
IFAGC
IFCM
FM IF AGC
IF counter mode
IFENA
IF counter enable
IFG
IF1 amplifier gain (10.7MHz)
IFS
IF counter sampling time
ISSIN
ISSON
Test input for ISS filter
ISS filter “ON”
ISS30
ISS filter 30KHz weather band
ISS80
ISS filter narrow/mid switch
KAGC
FM keying AGC
LDENA
LG
Lock detector enable
Level gain adjust in stereodecoder
LM
Local mode FM seek stop
LPF
Loop filter input select
MAXHC
MENA
Maximum high cut
Softmute enable
MPAC
Adjacent channel control by multipath
MPCC
Multipath detector charge current
MPBPG
Multipath detector bandpass filter gain
MPF
MPG
Multipath filter frequency
Multipath filter gain
MPION
Multipath internal influence enable
MPOFF
Multipath control “OFF”
MPPC
MPRG
Multipath influence on peak discharge current
Multipath detector rectifier gain
MPTH
Multipath threshold
MS
Mono/Stereo switch automatically
MUXST
Test multiplexer output stereodecoder
NBCTH
NBDTH
Noise blanker noise controlled threshold
Noise blanker deviation controlled threshold
NBFS
Field strength controlled noise blanker
NBFT
AM noise blanker fixed threshold
NBLTH
Noise blanker low threshold
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TDA7540N