TDA7529_11 datasheet(32/61 Pages) STMICROELECTRONICS

Part #	TDA7529

Description	RF front-end for AM/FM DSP car-radio with IF sampling

PDF	61 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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32 / 61 page

Tuning state machine

TDA7529

32/61

Doc ID 13311 Rev 4

5.3

Mode 110: load

Figure 13.

Load timing diagram

The content of the buffer and control registers is swapped. No transition occurs on the

AFHOLD and AFSAMPLE lines.

5.4

Mode 111: end

Figure 14.

End timing diagram

This mode is used to end sequences that terminate with muted audio, after the decision on

whether to stay to that frequency or jump to a different one has been taken.

AFHOLD can be used to tell the back-end to unmute the audio.

AFSAMPLE can be used to tell the back-end to restore normal quality signal processing.

Most of the wait times of the algorithm can actually be programmed.

The following table summarizes the minimum, maximum and default values of the

programmable wait times. The indicated values are valid only for the advised configuration

where the phase detector reference frequency is 100 kHz.

TDA7529 Datasheet(PDF) 32 Page - STMicroelectronics