FDA803U datasheet(58/76 Pages) STMICROELECTRONICS

부품명	FDA803U

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

PDF	76 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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58 / 76 page

I2C bus interface

FDA803U

58/76

DS12497 Rev 2

Figure 71. Without/with auto-increment reading procedure

If a microcontroller tries to read an undefined register, FDA803U will return a "0xFF" data;

for more details refer directly to I2C specification.

13.3

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.

13.4

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.

13.5

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.

13.6

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 FDA803U

= slave (FDA803U) when the μP reads a data byte from FDA803U

** Receiver

= slave (FDA803U) when the μP writes an address to the FDA803U

= master (μP) when it reads a data byte from FDA803U

FDA803U 데이터시트(PDF) 58 Page - STMicroelectronics