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参数资料
| 型号： | TAS3204PAG |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | GREEN, PLASTIC, TQFP-64 |
| 文件页数： | 7/76页 |
| 文件大小： | 1224K |
| 代理商： | TAS3204PAG |
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23
22
SCLK
32Clks
LRCLK
LeftChannel
24-BitMode
1
20-BitMode
16-BitMode
15
14
MSB
LSB
SCLK
32Clks
RightChannel
2-ChannelRight-Justified(SonyFormat)StereoInput
T0034-03
19
18
1
19
18
1
0
15
14
15
14
23
22
1
15
14
MSB
LSB
19
18
1
19
18
1
0
15
14
15
14
www.ti.com
SLES197C – APRIL 2007 – REVISED MARCH 2011
4.1.3
2-Channel Right-Justified Timing
In 2-channel right-justified (RJ) timing, LRCLK is HIGH when left-channel data is transmitted and LOW
when right-channel data is transmitted. SCLK is a bit clock running at 64 × fS which clocks in each bit of
the data. The first bit of data appears on the data lines 8 bit-clock periods (for 24-bit data) after LRCLK
toggles. In the RJ mode, the last bit clock before LRCLK transitions always clocks the LSB of data. The
data is written MSB first and is valid on the rising edge of the bit clock. The TAS3204 masks unused
leading data-bit positions.
Figure 4-4. Right-Justified 64fS Format
4.1.4
SAP Input to SAP Output—Processing Flow
All SAP data format options other than I2S result in a two-sample delay from input to output. If I2S
formatting is used for both the input SAP and the output SAP, the polarity of LRCLK must be inverted.
However, if I2S format conversions are performed between input and output, the delay becomes either 1.5
samples or 2.5 samples, depending on the processing clock frequency selected for the audio DSP core
relative to the sample rate of the incoming data.
The I2S format uses the falling edge of LRCLK to begin a sample period, whereas all other formats use
the rising edge of LRCLK to begin a sample period. This means that the input SAP and audio DSP core
operate on sample windows that are 180° out of phase with respect to the sample window used by the
output SAP. This phase difference results in the output SAP outputting a new data sample at the midpoint
of the sample period used by the audio DSP core to process the data. If the processing cycle completes
all processing tasks before the midpoint of the processing sample period, the output SAP outputs this
processed data. However, if the processing time extends past the midpoint of the processing sample
period, the output SAP outputs the data processed during the previous processing sample period. In the
former case, the delay from input to output is 1.5 samples. In the latter case, the delay from input to output
is 2.5 samples.
Copyright 2007–2011, Texas Instruments Incorporated
Digital Audio Interface
15
Product Folder Link(s): TAS3204
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TAS3204PAGR | 功能描述:音频 DSP Hi Perf Dual Core DSP/MCU Aud Proc RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| TAS3208 | 制造商:TI 制造商全称:Texas Instruments 功能描述:DIGITAL AUDIO PROCESSOR WITH ANALOG INTERFACE |
| TAS3208EVM | 功能描述:音频 IC 开发工具 TAS3208EVM Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| TAS3208EVM-LC | 功能描述:音频 IC 开发工具 TAS3208 Low Cost EVM RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| TAS3208IPZP | 功能描述:音频 DSP Dual Core Dig Aud Proc RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
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