TDA7438D datasheet(7/17 Pages) STMICROELECTRONICS

부품명	TDA7438D

상세설명	THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR

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I

2C BUS INTERFACE

Data transmission from microprocessor to the

TDA7438 and vice versa takes place through the

2 wires I

2C BUS interface, consisting of the two

lines SDA and SCL (pull-up resistors to positive

supply voltage must be connected).

Data Validity

As shown in fig. 3, 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.

Start and Stop Conditions

As shown in fig.4 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 tran-

sition of the SDA line while SCL is HIGH.

Byte Format

Every byte transferred on the SDA line must con-

tain 8 bits. Each byte must be followed by an ac-

knowledge bit. The MSB is transferred first.

Acknowledge

The master (

µP) puts a resistive HIGH level on the

SDA line during the acknowledge clock pulse (see

fig. 5). The peripheral (audio processor) that ac-

knowledges has to pull-down (LOW) the SDA line

during this clock pulse.

The audio processor which has been addressed

has to generate an acknowledge after the recep-

tion of each byte, otherwise the SDA line remains

at the HIGH level during the ninth clock pulse

time. In this case the master transmitter can gen-

erate the STOP information in order to abort the

transfer.

Transmission without Acknowledge

Avoiding to detect the acknowledge of the audio

processor, the

µP can use a simpler transmission:

simply it waits one clock without checking the

slave acknowledging, and sends the new data.

This approach of course is less protected from

misworking.

Figure 3: Data Validity on the I

2CBUS

Figure 4: Timing Diagram of I

2CBUS

Figure 5: Acknowledge on the I

2CBUS

TDA7438

7/17

유사한 부품 번호 - TDA7438D

제조업체	부품명	데이터시트	상세설명
STMicroelectronics	TDA7438D	198Kb / 19P	THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR
STMicroelectronics	TDA7438D013TR	198Kb / 19P	THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR

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유사한 설명 - TDA7438D

제조업체	부품명	데이터시트	상세설명
STMicroelectronics	TDA7438	198Kb / 19P	THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR
	TDA7439	167Kb / 19P	THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR June 2004 REV. 10
	TDA7439DS	140Kb / 16P	THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR
	TDA7439	299Kb / 23P	Three-band digitally-controlled audio processor
	TDA7439DS	319Kb / 23P	Three-band digitally-controlled audio processor
	TDA7468	254Kb / 23P	TWO BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR WITH BASS ALC SURROUND April 2010 Rev. 4
	TDA7468D	173Kb / 22P	TWO BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR WITH BASS ALC SURROUND
	TDA7437N	353Kb / 34P	Digitally controlled audio processor
Princeton Technology Co...	PT2037	259Kb / 6P	Digitally Controlled Audio Processor
STMicroelectronics	TDA7342	97Kb / 14P	DIGITALLY CONTROLLED AUDIO PROCESSOR November 1999

More results

TDA7438D 데이터시트(PDF) 7 Page - STMicroelectronics

TDA7438D 데이터시트(HTML) 7 Page - STMicroelectronics

유사한 부품 번호 - TDA7438D

유사한 설명 - TDA7438D

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