TDA7546 datasheet(45/68 Pages) STMICROELECTRONICS

45 / 68 page

TDA7546

Software specifications

45/68

Disable ISS filter to fixed bandwith (ISS80) in automatic

control

Enable ISS filter to fixed bandwith (ISS80) in automatic control

Table 22.

Addr 11 quality deviation detection (continued)

MSB

LSB

Function

Table 23.

Addr 14 VCODIV/PLLREF

MSB

LSB

Function

not valid (only for testing)

VCO frequency divided by 2

VCO frequency divided by 3

original VCO frequency

VCO” I” signal 0°C

VCO “I” signal 180°C

PLL reference frequency 50KHz

PLL reference frequency 25KHz

PLL reference frequency 10KHz

PLL reference frequency 9KHz

PLL reference frequency 2KHz

has to be set

Table 24.

Addr 15 FM AGC

MSB

LSB

Function

RFAGC threshold V3-5TH = 82(74 ANT)dBμV

RFAGC threshold V3-5TH = 88(80 ANT)dBμV

RFAGC threshold V3-5TH = 92(84 ANT)dBμV

RFAGC threshold V3-5TH = 94(86 ANT)dBμV

IFAGC threshold V77TH = 86(60 ANT)dBμV

IFAGC threshold V77TH = 92(66 ANT)dBμV

IFAGC threshold V77TH = 96(70 ANT)dBμV

IFAGC threshold V77TH = 98(72 ANT)dBμV

KAGC threshold 80dB

μV

KAGC threshold 82dB

μV

KAGC threshold 84dB

μV

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