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參數(shù)資料
| 型號： | TAS5504PAGG4 |
| 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)： | 44/96頁 |
| 文件大?。?/td> | 1216K |
| 代理商： | TAS5504PAGG4 |
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TAS5504 Controls and Status
42
SLES123 October 2004
TAS5504
On TAS5504 power up or reset, the micro runs the following TAS5504 Initialization code:
Update Bank 1 (Write 0x00048040 to register 0x40).
Write bank-related I2C registers with appropriate values for Bank 1.
Write Bank 2 (Write 0x00058040 to register 0x40).
Load bank-related I2C registers with appropriate values for Bank 2.
Write Bank 3 (Write 0x00068040 to register 0x40).
Load bank-related I2C registers with appropriate values for Bank 3.
Select automatic bank switching (write 0x00038040 to register 0x40)
Now when the audio media changes, the TAS5504 automatically detects the incoming sample rate and
automatically switches to the appropriate bank.
In this example any sample rates other then 32 kHz and 44.1 kHz will use Bank 3. If other sample rates are
used, then the banks need to be setup differently.
2.5.6 Bank Switching Example 2
Problem: The audio system uses all of the sample rates supported by the TAS5504. How can the automatic
bank switching be set up to handle this situation?
Strategy: Use the TAS5504 bank switching feature to allow for managing and switching three banks
associated with sample rates as follows:
Bank 1: Coefficients for 32 kHz, 38 kHz, 44.1 kHz, and 48 kHz
Bank 2: Coefficients for 88.2kHz and 96 kHz
Bank 3: Coefficients for 176.4 kHz and 192 kHz
One possible algorithm is to generate, load, and automatically manage bank switching for this problem:
Generate bank-related coefficients for sample rates 48 kHz (Bank 1), 96 kHz (Bank 2), and 192 kHz (Bank
3) and include the same in the micro-based TAS5504 I2C firmware.
On TAS5504 powerup or reset, the micro runs the following TAS5504 Initialization code:
Update Bank 1 (Write 0x0004F00C to register 0x40).
Write bank-related I2C registers with appropriate values for Bank 1.
Write Bank 2 (Write 0x0005F00C to register 0x40).
Load bank-related I2C registers with appropriate values for Bank 2.
Write Bank 3 (Write 0x0006F00C to register 0x40).
Load bank-related I2C registers with appropriate values for Bank 3.
Select automatic bank switching (Write 0x0003F00C to register 0x40)
Now when the audio media changes, the TAS5504 automatically detects the incoming sample rate and
automatically switches to the appropriate bank.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TAS5504PAGR | 功能描述:音頻 DSP 4 Ch Digital Audio PWM Processor RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| TAS5504PAGRG4 | 功能描述:音頻 DSP 4 Ch Digital Audio PWM Processor RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| 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 |
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