APA3160A Ver la hoja de datos (PDF) - Anpec Electronics

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componentes Descripción

Fabricante

APA3160A

20W Stereo Digital Class-D Audio Power Amplifier

Anpec Electronics 

APA3160A

Function Description (Cont.)

Single-Byte Read

As shown in Figure 12, a single-byte data read transfer begins with the master device transmitting a start condition

followed by the I2C device address and the R/W bit. For the data read transfer, both a write followed by a read are

actually done. Initially, a write is done to transfer the address byte or bytes of the internal memory address to be read.

As a result, the R/W bit becomes a 0. After receiving the APA3160A address and the read/write bit, APA3160A responds

with an acknowledge bit. Besides, after sending the internal memory address byte or bytes, the master device

transmits another start condition followed by the APA3160A address and the read/write bit again. This time the read/

write bit becomes a 1, indicating a read transfer. After receiving the address and the read/write bit, the APA3160A again

responds with an acknowledge bit. And then, the APA3160A transmits the data byte from the memory address being

read. After receiving the data byte, the master device transmits a not acknowledge followed by a stop condition to

complete the single byte data read transfer.

Start

Condition

Acknowledge

Acknowledge

Acknowledge

Not Acknowledge

A6 A5 A1 A0 R/W ACK A7 A6 A1 A0 ACK

A6 A5 A1 A0 R/W ACK D7 D6 D1 D0 ACK

I2C Device Address

and Read/ Write Bit

Sub-address

Repeat Start

Condition

I2C Device Address

and Read/ Write Bit

Figure 12. Single-Byte Read Transfer

Data Byte

Stop

Condition

Copyright © ANPEC Electronics Corp.

17

Rev. A.6 - Jan., 2013

www.anpec.com.tw

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