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| 型号： | TAS5504PAGRG4 |
| 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： | 17/96页 |
| 文件大小： | 1216K |
| 代理商： | TAS5504PAGRG4 |
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Introduction
16
SLES123 October 2004
TAS5504
Similarly, the TAS5504 carries additional precision in the form of overflow bits to permit the value of
intermediate calculations to exceed the input precision without clipping. The TAS5504 advanced digital audio
processor achieves both of these important performance capabilities by using a high performance digital audio
processing architecture with a 48-bit data path, 28-bit filter coefficients, and a 76-bit accumulator.
1.5
Input Crossbar Mixer
The TAS5504 has a full 8x4 input crossbar mixer. This mixer permits each signal processing channel input
to be any ratio of any of the eight input channels. The control parameters for the input crossbar mixer are
programmable via the I2C interface. See the Input Mixer Register (0x410x48, channels 18) section.
SUM
Gain Coefficient
28
48
Input 1
Gain Coefficient
28
48
Input 2
Gain Coefficient
28
48
Input 8
48
Figure 112. Input Crossbar Mixer
1.6
Biquad Filters
For 32-kHz to 96-kHz data, the TAS5504 provides 28 biquads across the four channels (seven per channel)
For 176.4-kHz and 192-kHz data, the TAS5504 has 21 biquads across the three channels (seven per
channel). All of the biquad filters are second order direct form I structure.
The direct form I structure provides a separate delay element and mixer (gain coefficient) for each node in the
biquad filter. Each mixer output is a signed 76-bit product of a signed 48-bit data sample (25.23 format number)
and a signed 28-bit coefficient (5.23 format number). The 76-bit ALU in the TAS5504 allows the 76-bit
resolution to be retained when summing the mixer outputs (filter products).
The five 28-bit coefficients for the each of the 28 biquads are programmable via the I2C interface. See
Table 13.
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| TAS5504PAGG4 | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TAS5508 | 制造商:TI 制造商全称:Texas Instruments 功能描述:8 Channel Digital Audio PWM Processor |
| TAS5508-5121K8EVM | 功能描述:音频 IC 开发工具 TAS5508-TAS5121K8 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 |
| TAS5508-5122C6EVM | 功能描述:音频 IC 开发工具 TAS5508-5122C6 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 |
| TAS5508-5142K7EVM | 功能描述:音频 IC 开发工具 HI PERF MULTI PWM 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 |
| TAS5508A | 制造商:TI 制造商全称:Texas Instruments 功能描述:8 Channel Digital Audio PWM Processor |
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