參數(shù)資料
型號(hào)： TAS5711PHPR
廠商： Texas Instruments
文件頁(yè)數(shù)： 26/66頁(yè)
文件大小： 0K
描述： IC AMP AUD DGTL 20W 2CH 48HTQFP
標(biāo)準(zhǔn)包裝： 1
類(lèi)型： D 類(lèi)
輸出類(lèi)型： 2 通道（立體聲，2.1）或 4 通道（四路）
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： 21W x 2 @ 8 歐姆
電源電壓： 8 V ~ 26 V
特點(diǎn)： 消除爆音，數(shù)字輸入，I²C，I²S，靜音，短路和熱保護(hù)，關(guān)機(jī)，音量控制
安裝類(lèi)型： 表面貼裝
供應(yīng)商設(shè)備封裝： 48-HTQFP（7x7）
封裝/外殼： 48-TQFP 裸露焊盤(pán)
包裝： 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁(yè)面： 860 (CN2011-ZH PDF)
其它名稱： 296-25564-6
A6
A5
A4
A3
A2
A1
A0
R/W ACK A7
A6
A5
A4
A3
A2
A1
A0
ACK
D7
D6
D5
D4
D3
D2
D1
D0 ACK
Start
Condition
Stop
Condition
Acknowledge
I CDevice Addressand
2
Read/WriteBit
Subaddress
DataByte
T0036-01
D7
D0 ACK
Stop
Condition
Acknowledge
I CDevice Addressand
2
Read/WriteBit
Subaddress
LastDataByte
A6
A5
A1
A0 R/W ACK A7
A5
A1
A0
ACK D7
ACK
Start
Condition
Acknowledge
FirstDataByte
A4
A3
A6
OtherDataBytes
ACK
Acknowledge
D0
D7
D0
T0036-02
SLOS600A – DECEMBER 2009 – REVISED AUGUST 2010
www.ti.com
During multiple-byte read operations, the DAP responds with data, a byte at a time, starting at the subaddress
assigned, as long as the master device continues to respond with acknowledges. If a particular subaddress does
not contain 32 bits, the unused bits are read as logic 0.
During multiple-byte write operations, the DAP compares the number of bytes transmitted to the number of bytes
that are required for each specific subaddress. For example, if a write command is received for a biquad
subaddress, the DAP expects to receive five 32-bit words. If fewer than five 32-bit data words have been
received when a stop command (or another start command) is received, the data received is discarded.
Supplying a subaddress for each subaddress transaction is referred to as random I2C addressing. The TAS5711
also supports sequential I2C addressing. For write transactions, if a subaddress is issued followed by data for
that subaddress and the 15 subaddresses that follow, a sequential I2C write transaction has taken place, and the
data for all 16 subaddresses is successfully received by the TAS5711. For I2C sequential write transactions, the
subaddress then serves as the start address, and the amount of data subsequently transmitted, before a stop or
start is transmitted, determines how many subaddresses are written. As was true for random addressing,
sequential addressing requires that a complete set of data be transmitted. If only a partial set of data is written to
the last subaddress, the data for the last subaddress is discarded. However, all other data written is accepted;
only the incomplete data is discarded.
Single-Byte Write
As shown in Figure 47, a single-byte data write transfer begins with the master device transmitting a start
condition followed by the I2C device address and the read/write bit. The read/write bit determines the direction of
the data transfer. For a write data transfer, the read/write bit will be a 0. After receiving the correct I2C device
address and the read/write bit, the DAP responds with an acknowledge bit. Next, the master transmits the
address byte or bytes corresponding to the TAS5711 internal memory address being accessed. After receiving
the address byte, the TAS5711 again responds with an acknowledge bit. Next, the master device transmits the
data byte to be written to the memory address being accessed. After receiving the data byte, the TAS5711 again
responds with an acknowledge bit. Finally, the master device transmits a stop condition to complete the
single-byte data write transfer.
Figure 47. Single-Byte Write Transfer
Multiple-Byte Write
A multiple-byte data write transfer is identical to a single-byte data write transfer except that multiple data bytes
are transmitted by the master device to the DAP as shown in Figure 48. After receiving each data byte, the
TAS5711 responds with an acknowledge bit.
Figure 48. Multiple-Byte Write Transfer
32
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s): TAS5711
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