TDA7563PD Datasheet, PDF (14/21 Pages) STMicroelectronics – MULTIFUNCTION QUAD POWER AMPLIFIER WITH BUILT-IN DIAGNOSTICS FEATURES

TDA7563PD
9.4 Acknowledge
The transmitter* puts a resistive HIGH level on the SDA line during the acknowledge clock pulse (see fig. 30).
The receiver** the acknowledges has to pull-down (LOW) the SDA line during the acknowledge clock pulse, so
that the SDAline is stable LOW during this clock pulse.
* Transmitter
– master (µP) when it writes an address to the TDA7563PD
– slave (TDA7563PD) when the µP reads a data byte from TDA7563PD
** Receiver
– slave (TDA7563PD) when the µP writes an address to the TDA7563PD
– master (µP) when it reads a data byte from TDA7563PD
Figure 28. Data Validity on the I²CBUS
SDA
SCL
DATA LINE
STABLE, DATA
VALID
Figure 29. Timing Diagram on the I²CBUS
CHANGE
DATA
ALLOWED
D99AU1031
SCL
SDA
START
D99AU1032
Figure 30. Acknowledge on the I²CBUS
SCL
1
2
3
7
I²CBUS
STOP
8
9
SDA
START
MSB
D99AU1033
ACKNOWLEDGMENT
FROM RECEIVER
14/21