參數(shù)資料
型號(hào)： TAS5705PAPG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
封裝： 10 X 10 MM, GREEN, PLASTIC, HTQFP-64
文件頁(yè)數(shù)： 39/72頁(yè)
文件大?。?/td> 1168K
代理商： TAS5705PAPG4
SLOS549A – JUNE 2008 – REVISED SEPTEMBER 2009 ................................................................................................................................................ www.ti.com
I
2C SERIAL CONTROL COMMAND CHARACTERISTICS
The DAP has two groups of I2C commands. One set is commands that are designed specifically to be operated
while audio is streaming and that have built-in mechanisms to prevent noise, clicks, and pops. The other set
does not have this built-in protection.
Commands that are designed to be adjusted while audio is streaming:
Master volume
Master mute
Individual channel volume
Individual channel mute
Commands that are normally issued as part of initialization:
Serial data interface format
De-emphasis
Sample-rate conversion
Input multiplexer
Output multiplexer
Biquads
Down mix
Channel delay
Enable/disable dc blocking
Hard/soft unmute from clock error
Enable/disable headphone outputs
Start-up sequence for correct device operation
This sequence must be followed to ensure proper operation.
1. Hold ALL logic inputs low. Power up AVDD/DVDD and wait for the inputs to settle in the allowed range.
2. Drive PDN = 1, MUTE = 1, and drive other logic inputs to the desired state.
3. Provide a stable MCLK, LRCLK, and SCLK (clock errors must be avoided during the initialization sequence) .
4. After completing step 3, wait 100
μs, then drive RESET = 1, and wait 13.5 ms after RESET goes high.
5. Trim the internal oscillator (write 0x00 to register 0x1B).
6. Wait 50 ms while the part acquires lock.
7. Configure the DAP via I2C, e.g.:
–
Downmix control (0x21)
–
Biquads (0x23–0x24 and 0x29–0x38)
–
DRC parameters and controls (0x3A–0x46)
–
Bank select (0x50)
NOTE: User may not issue any I2C reads or writes to the above registers after this step is complete.
8. Configure remaining I2C registers, e.g.:
–
Shutdown group
–
De-emphasis
–
Input multiplexers
–
Output multiplexers
–
Channel delays
–
DC blocking
–
Hard/soft unmute from clock error
–
Serial data interface format
–
Clock register (manual clock mode only)
NOTE: The BKND_ERR register (0x1C) can only be written once with a value that is not reserved (00
and 01 are reserved values).
9. Exit all-channel shutdown (write 0 to bit 6 of register 0x05).
44
Copyright 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): TAS5705
相關(guān)PDF資料
PDF描述
TAS5705PAPRG4 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
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TAS5705PAPR 功能描述:音頻放大器 20W stereo Dig Audio 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TAS5705PAPRG4 功能描述:音頻放大器 20W stereo Dig 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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TAS5706A 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
TAS5706A_0812 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
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