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參數(shù)資料
| 型號： | TAS5708PHP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 20.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| 封裝： | 7 X 7 MM, GREEN, PLASTIC, HTQFP-48 |
| 文件頁數(shù)： | 16/56頁 |
| 文件大?。?/td> | 1104K |
| 代理商： | TAS5708PHP |
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I
2C SERIAL CONTROL INTERFACE
General I2C Operation
7-BitSlave Address
R/
W
8-BitRegister Address(N)
A
8-BitRegisterDataFor
Address(N)
Start
Stop
SDA
SCL
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
A
8-BitRegisterDataFor
Address(N)
A
T0035-01
Single- and Multiple-Byte Transfers
www.ti.com ........................................................................................................................................................................................... SLOS570 – DECEMBER 2008
The TAS5708 DAP has a bidirectional I2C interface that compatible with the I2C (Inter IC) bus protocol and
supports both 100-kHz and 400-kHz data transfer rates for single and multiple byte write and read operations.
This is a slave only device that does not support a multimaster bus environment or wait state insertion. The
control interface is used to program the registers of the device and to read device status.
The DAP supports the standard-mode I2C bus operation (100 kHz maximum) and the fast I2C bus operation
(400 kHz maximum). The DAP performs all I2C operations without I2C wait cycles.
The I2C bus employs two signals; SDA (data) and SCL (clock), to communicate between integrated circuits in a
system. Data is transferred on the bus serially one bit at a time. The address and data can be transferred in byte
(8-bit) format, with the most significant bit (MSB) transferred first. In addition, each byte transferred on the bus is
acknowledged by the receiving device with an acknowledge bit. Each transfer operation begins with the master
device driving a start condition on the bus and ends with the master device driving a stop condition on the bus.
The bus uses transitions on the data pin (SDA) while the clock is high to indicate a start and stop conditions. A
high-to-low transition on SDA indicates a start and a low-to-high transition indicates a stop. Normal data bit
transitions must occur within the low time of the clock period. These conditions are shown in Figure 27. The
master generates the 7-bit slave address and the read/write (R/W) bit to open communication with another
device and then waits for an acknowledge condition. The TAS5708 holds SDA low during the acknowledge clock
period to indicate an acknowledgment. When this occurs, the master transmits the next byte of the sequence.
Each device is addressed by a unique 7-bit slave address plus R/W bit (1 byte). All compatible devices share the
same signals via a bidirectional bus using a wired-AND connection. An external pullup resistor must be used for
the SDA and SCL signals to set the high level for the bus.
Figure 27. Typical I2C Sequence
There is no limit on the number of bytes that can be transmitted between start and stop conditions. When the last
word transfers, the master generates a stop condition to release the bus. A generic data transfer sequence is
shown in Figure 27.
The 7-bit address for TAS5708 is 0011 011 (0x36).
TAS5708 address can be changed from 0x36 to 0x38 by writing 0x38 to device address register 0xF9.
The serial control interface supports both single-byte and multiple-byte read/write operations for subaddresses
0x00 to 0x1F. However, for the subaddresses 0x20 to 0xFF, the serial control interface supports only
multiple-byte read/write operations (in multiples of 4 bytes).
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.
Copyright 2008, Texas Instruments Incorporated
23
Product Folder Link(s): TAS5708
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| TAS5708PHPR | 功能描述:音頻放大器 20W St Closed-Loop I2S In Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5709 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:20-W STEREO DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC |
| TAS5709APHP | 功能描述:音頻放大器 20W Stereo I2S Aud Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5709APHPR | 功能描述:音頻放大器 20W Stereo I2S Aud Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5709EVM | 功能描述:音頻 IC 開發(fā)工具 TAS5709EVM Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
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