參數(shù)資料
型號： TLV320AIC3106_0706
廠商： Texas Instruments, Inc.
元件分類： Codec
英文描述： LOW-POWER STEREO AUDIO CODEC FOR PORTABLE AUDIO/TELEPHONY
中文描述： 低功耗立體聲音頻編解碼器的便攜式音頻/電話
文件頁數(shù)： 33/102頁
文件大?。?/td> 1259K
代理商： TLV320AIC3106_0706
www.ti.com
DIGITAL AUDIO PROCESSING FOR PLAYBACK
The DAC channel consists of optional filters for de-emphasis and bass, treble, midrange level adjustment,
speaker equalization, and 3-D effects processing. The de-emphasis function is implemented by a programmable
digital filter block with fully programmable coefficients (see Page-1/Reg-21-26 for left channel, Page-1/Reg-47-52
for right channel). If de-emphasis is not required in a particular application, this programmable filter block can be
used for some other purpose. The de-emphasis filter transfer function is given by:
H(z)
N0
N1
z
1
32768
D1
z
1
(2)
N0
2
N1
z
1
N2
z
2
32768
2
D1
z
1
D2
z
2
N3
2
N4
z
1
N5
z
2
32768
2
D4
z
1
D5
z
2
(3)
LB1
LB2
RB1
RB2
TLV320AIC3106
SLAS509B–DECEMBER 2006–REVISED JUNE 2007
where the N0, N1, and D1 coefficients are fully programmable individually for each channel. The coefficients that
should be loaded to implement standard de-emphasis filters are given in
Table 2
.
Table 2. De-Emphasis Coefficients for Common Audio Sampling Rates
SAMPLING FREQUENCY
32-kHz
44.1-kHz
48-kHz
(1)
N0
N1
D1
16950
15091
14677
–1220
–2877
–3283
17037
20555
21374
(1)
The 48-kHz coefficients listed in
Table 2
are used as defaults.
In addition to the de-emphasis filter block, the DAC digital effects processing includes a fourth order digital IIR
filter with programmable coefficients (one set per channel). This filter is implemented as cascade of two biquad
sections with frequency response given by:
The N and D coefficients are fully programmable, and the entire filter can be enabled or bypassed. The structure
of the filtering when configured for independent channel processing is shown below in
Figure 28
, with LB1
corresponding to the first left-channel biquad filter using coefficients N0, N1, N2, D1, and D2. LB2 similarly
corresponds to the second left-channel biquad filter using coefficients N3, N4, N5, D4, and D5. The RB1 and
RB2 filters refer to the first and second right-channel biquad filters, respectively.
Figure 28. Structure of the Digital Effects Processing for Independent Channel Processing
33
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TLV320AIC3106EVM 功能描述:音頻 IC 開發(fā)工具 TLV320AIC3106 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
TLV320AIC3106EVM-K 功能描述:音頻 IC 開發(fā)工具 TLV320AIC3106EVM-K 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
TLV320AIC3106IGQE 制造商:Texas Instruments 功能描述:AUD CODEC 2ADC / 2DAC 24BIT 80BGA - Trays
TLV320AIC3106IGQER 制造商:Texas Instruments 功能描述:AUD CODEC 2ADC / 2DAC 24BIT 80BGA - Tape and Reel
TLV320AIC3106IRGZR 功能描述:接口—CODEC Lo-Pwr Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
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