TDA7540B Datasheet, PDF (36/75 Pages) STMicroelectronics – AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)

Functional description
TDA7540B
4.5.8
page mode. Than again subaddresse hex60 has to be transmitted for following registers
above 32.
After each word receipt the TDA7540 will answer with an "acknowledge".
Read operation
If the master sends a slave address word with the R/W bit set to "1", the TDA7540 will transit
one 8-bit data word. This data word includes the following informations:
bit0 (ISS filter, 1 = ON, 0 = OFF)
bit1 (ISS filter bandwidth, 1 = 80kHz, 0 = 120kHz)
bit2 (STEREO,1 = STEREO, 0 = MONO)
bit3 (1 = PLL is locked in , 0 = PLL is locked out).
bit4 (fieldstrength indicator, 1 = lower as softmute threshold, 0 = higher as softmute
threshold)
bit5 (adjacent channel indicator, 1 = adjacent channel present, 0 = no adjacent channel)
bit6 (deviation indicator, 1 = strong overdeviation present, 0 = no strong overdeviation)
bit7 (deviation indicator, 1 = overdeviation present, 0 = no overdeviation)
36/75