FDA803D datasheet(59/78 Pages) STMICROELECTRONICS

No de pièce	FDA803D

Description	1 x 45 W class D digital input automotive power amplifier with diagnostics, wide voltage operation range for car audio and telematic

PDF	78 Pages

Scroll/Zoom	100%

Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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59 / 78 page

DocID031487 Rev 2

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FDA803D

I2C bus interface

Figure 71. Without/with auto-increment reading procedure

If a microcontroller tries to read an undefined register, FDA803D will return a "0xFF" data;

for more details refer directly to I2C specification.

14.3

Data validity

The data on the SDA line must be stable during the high period of the clock. The HIGH and

LOW state of the data line can only change when the clock signal on the SCL line is LOW.

14.4

Start and stop conditions

A start condition is a HIGH to LOW transition of the SDA line while SCL is HIGH.

The stop condition is a LOW to HIGH transition of the SDA line while SCL is HIGH.

14.5

Byte format

Every byte transferred to the SDA line must contain 8 bits. Each byte must be followed by an

acknowledge bit. The MSB is transferred first.

14.6

Acknowledge

The transmitter* puts a resistive HIGH level on the SDA line during the acknowledge clock

pulse. The receiver** has to pull-down (LOW) the SDA line during the acknowledge clock

pulse, so that the SDA line is stable LOW during this clock pulse.

* Transmitter

= master (μP) when it writes an address to the FDA803D

= slave (FDA803D) when the μP reads a data byte from FDA803D

** Receiver

= slave (FDA803D) when the μP writes an address to the FDA803D

= master (μP) when it reads a data byte from FDA803D

FDA803D Fiches technique(PDF) 59 Page - STMicroelectronics