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參數(shù)資料
| 型號： | TAS5504PAGRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | GREEN, PLASTIC, TQFP-64 |
| 文件頁數(shù)： | 9/96頁 |
| 文件大?。?/td> | 1216K |
| 代理商： | TAS5504PAGRG4 |
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Introduction
9
SLES123 October 2004
TAS5504
1.3.5 Digital Audio Processor (DAP)
The DAP arithmetic unit is used to implement all audio processing functions – soft volume, loudness
compensation, bass and treble processing, dynamic range control, channel filtering, input and output mixing.
Figure 14 shows the TAS5504 DAP architecture.
The DAP accepts 24-bit data signal from the serial data interface and outputs 32-bit data to the PWM section.
The DAP supports two configurations, one for 32-kHz – 96-kHz data and one for 176.4-kHz to 192-kHz data.
1.3.5.1
TAS5504 Audio Processing Configurations
The 32 96 kHz configuration supports four channels of data processing.
The 176.4 192 kHz configuration supports three channels of signal processing with one channel passed
though (or derived from the three processed channels).
To efficiently support the processing requirements of both multi-channel 32 – 96-kHz data and the two channel
176.4 and 192-kHz data, the TAS5504 supports separate audio processing features for 32 –96-kHz data rates
and for 176.4 and 192 kHz. See Table 2 for a summary of TAS5504 processing feature sets.
1.3.5.2
TAS5504 Audio Signal Processing Functions
The DAP provides 10 primary signal processing functions.
1. The data processing input has an 8x4 input crossbar mixer. This enables each input to be any ratio of the
eight input channels.
2. Two I2C programmable threshold detectors in each channel support auto mute.
3. Seven biquads per channel
4. Four soft bass and treble tone controls with ±18 dB range, programmable corner frequencies, and 2nd
order slopes. In 4-channel mode, bass and treble controls are normally configured as follows:
Bass and Treble 1: Channel 1 (Left), Channel 2 (Right), and Channel 3 (Center)
Bass and Treble 2: Channel 4 (Subwoofer)
5. Individual channel and master volume controls. Each control provides an adjustment range of +18 dB to
–127 dB. This permits a total volume device control range of +36 dB to –127 dB plus mute. The DAP soft
volume and mute update interval is I2C programmable. The update is performed at a fixed rate regardless
of the sample rate.
6. Programmable loudness compensation that is controlled via the combination of the master and individual
volume settings.
7. Two dual-threshold dual-rate dynamic range compressors (DRCs). The volume gain values are provided
used as input parameters using the maximum RMS (master volume x individual channel volume).
8. 4x2 output mixer (channels 1 and 2). Each output can be any ratio of any two signal processed channels.
9. 4x3 output mixer (channels 3 and 4). Each output can be any ratio of any three signal processed channels.
10. The DAP maintains three sets of coefficient banks that are used to maintain separate sets of sample rate
dependent parameters for the biquad, tone controls, loudness, and DRC in RAM. These can be set to be
automatically selected for one or more data sample rates or can be manually selected under I2C program
control. This feature enables coefficients for different sample rates to be stored in the TAS5504 and then
select when needed.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TAS5508 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:8 Channel Digital Audio PWM Processor |
| TAS5508-5121K8EVM | 功能描述:音頻 IC 開發(fā)工具 TAS5508-TAS5121K8 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 |
| TAS5508-5122C6EVM | 功能描述:音頻 IC 開發(fā)工具 TAS5508-5122C6 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 |
| TAS5508-5142K7EVM | 功能描述:音頻 IC 開發(fā)工具 HI PERF MULTI PWM 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 |
| TAS5508A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:8 Channel Digital Audio PWM Processor |
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