TDA7529 Datasheet, PDF (34/60 Pages) STMicroelectronics – RF front-end for AM/FM DSP car-radio with IF sampling

Tuning state machine
TDA7529
5.6
State machine start
The tuning state machine is activated only at the end of the transmission if bit 7 of the
subaddress is 1. The activation sequence, therefore, is to be done in the following way.
Figure 15. Buffer/control serial bus sequence
START
ADDRESS
(if I2C)
SUBADDRESS
REGS 0:31
STOP
AC00052
bit 7 = 1
REG 12 bit 6:4
sets desired state
machine mode
sets F2 into buffer
registers
tuning state
machine
starts
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