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TAS5719PHPR Datasheet(PDF) 29 Page - Texas Instruments |
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TAS5719PHPR Datasheet(HTML) 29 Page - Texas Instruments |
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29 / 68 page  A6 A5 A0 R/W ACK A7 A6 A5 A4 A0 ACK A6 A5 A0 ACK Start Condition Stop Condition Acknowledge Acknowledge Acknowledge I CDevice Addressand 2 Read/WriteBit Subaddress DataByte D7 D6 D1 D0 ACK I CDevice Addressand Read/WriteBit 2 Not Acknowledge R/W A1 A1 RepeatStart Condition T0036-03 A6 A0 ACK Acknowledge I CDevice Addressand Read/WriteBit 2 R/W A6 A0 R/W ACK A0 ACK D7 D0 ACK Start Condition Stop Condition Acknowledge Acknowledge Acknowledge LastDataByte ACK FirstDataByte RepeatStart Condition Not Acknowledge I CDevice Addressand Read/WriteBit 2 Subaddress OtherDataBytes A7 A6 A5 D7 D0 ACK Acknowledge D7 D0 T0036-04 TAS5717 TAS5719 www.ti.com SLOS655A – NOVEMBER 2010 – REVISED FEBRUARY 2011 Single-Byte Read As shown in Figure 38, a single-byte data-read transfer begins with the master device transmitting a start condition followed by the I2C device address and the read/write 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 read/write bit becomes a 0. After receiving the TAS5717/9 address and the read/write bit, TAS5717/9 responds with an acknowledge bit. In addition, after sending the internal memory address byte or bytes, the master device transmits another start condition followed by the TAS5717/9 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 TAS5717/9 again responds with an acknowledge bit. Next, the TAS5717/9 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. Figure 38. Single-Byte Read Transfer Multiple-Byte Read A multiple-byte data-read transfer is identical to a single-byte data-read transfer except that multiple data bytes are transmitted by the TAS5717/9 to the master device as shown in Figure 39. Except for the last data byte, the master device responds with an acknowledge bit after receiving each data byte. Figure 39. Multiple-Byte Read Transfer © 2010–2011, Texas Instruments Incorporated Submit Documentation Feedback 29 Product Folder Link(s): TAS5717 TAS5719 |
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