TDA7540N Datasheet, PDF (44/76 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
STDON
Stereodecoder on/off if muted
STDM
Stereodecoder mute enable
STING
STVCO
Stereodecoder ingain
Stereodecoder VCO adjust
TDEV
Time constant for deviation detector
TEST
Testing PLL/IFC (only for testing)
TFCKL
Fast clock for testing audioprocessor
TIN
TINAC
Switch FSU PIN to TEST input (only for testing)
Test input adjacent channel (only for testing)
TINACM
Test input adjacent channel mute (only for testing)
TINMP
Test input multipath(only for testing)
TISS
Time constant for ISS filter “ON”/”OFF”
TMSA
TOUT
Test mode stereodecoder and audioprocessor
Switch FSU PIN to Test output (only for testing)
TST
Test stereodecoder enable
TVMODE
Tuning voltage offset mode
TVO
TVWB
Tuning voltage offset for prestage
Tuning voltage offset for prestage (weather band mode)
VCOD
VCO divider
VCOM
Stereodecoder VCO mode
VCOON
Enable Stereo Decoder VCO
VHCH
VHCL
Start level high cut
Stop level high cut
WAGC
AM wide band AGC
XTAL
Xtal frequency adjust
XTLIM
Xtal amplitude limitation
TDA7540N
44/76