- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98302 > TSC2100IRHBRG4 (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PQCC32 PDF資料下載
參數(shù)資料
| 型號： | TSC2100IRHBRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁數(shù)： | 24/77頁 |
| 文件大?。?/td> | 1079K |
| 代理商： | TSC2100IRHBRG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁當前第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁
TSC2100
SLAS378 NOVEMBER 2003
www.ti.com
30
Table 3. AGC Settings
MIC INPUT
BIT
CONTROL REGISTER
AGC enable
D0
01H
Target gain
D7D5
01H
Time constants (attack and decay time)
D4D1
01H
Noise threshold
D5D4
06H
Noise threshold flag
D11
04H
Hysteresis
D10D9
1DH
Debounce time (normal to silence mode)
D8D6
1EH
Debounce time (silence to normal mode)
D5D3
1EH
Max PGA applicable
D15D9
1EH
Gain applied by AGC
D15D8
01H
Saturation flag
D0
04H
Clip stepping enable
D3
06H
NOTE: All settings shown in Table 2 are located in page2 of control registers.
STEREO AUDIO DAC
Each channel of the stereo audio DAC consists of a digital audio processing block, a digital interpolation filter, digital
delta-sigma modulator, and an analog reconstruction filter. The DAC is designed to provide enhanced performance at low
sample rates through increased oversampling and image filtering, thereby keeping quantization noise generated within the
delta-sigma modulator and signal images strongly suppressed within the audio band to beyond 20 kHz. This is realized
by keeping the upsampled rate constant at 128 x Fsref and changing the oversampling ratio as the input sample rate is
changed. For Fsref of 48 kHz, the digital delta-sigma modulator always operates at a rate of 6.144 MHz. This ensures that
quantization noise generated within the delta-sigma modulator stays low within the frequency band below 20 kHz at all
sample rates. Similarly, for Fsref rate of 44.1 kHz, the digital delta-sigma modulator always operates at a rate of 5.6448
MHz.
Digital Audio Processing
The DAC channel consists of optional filters for de-emphasis and bass, treble, midrange level adjustment, or speaker
equalization. The de-emphasis function is only available for sample rates of 32 kHz, 44.1 kHz, and 48 kHz. The transfer
function consists of a pole with time constant of 50 s and a zero with time constant of 15 s. Frequency response plots
are given in the Audio Codec Filter Frequency Responses section of this data sheet.
The DAC digital effects processing block also includes a fourth order digital IIR filter with programmable coefficients (one
set per channel). The filter is implemented as cascade of two biquad sections with frequency response given by:
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
The N and D coefficients are fully programmable, and the entire filter can be enabled or bypassed. The coefficients for this
filter implement a variety of sound effects, with bass-boost or treble boost being the most commonly used in portable audio
applications. The default N and D coefficients in the part are given by:
N0 = N3 = 27619
D1 = D4 = 32131
N1 = N4 = 27034
D2 = D5 = 31506
N2 = N5 = 26461
and implement a shelving filter with 0 dB gain from dc to approximately 150 Hz, at which point it rolls off to a 3 dB attenuation
for higher frequency signals, thus giving a 3-dB boost to signals below 150 Hz. The N and D coefficients are represented
by 16-bit twos complement numbers with values ranging from –32768 to +32767. Frequency response plots are given in
the Audio Codec Filter Frequency Responses section of this data sheet.
相關PDF資料 |
PDF描述 |
|---|---|
| TSC2101IRGZR | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| TSC2101IRGZ | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| TSC2101IRGZRG4 | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| TSC2101IRGZG4 | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| TSC2111IRGZR | 0.4 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC48 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TSC2100IRHBRMULT1 | 制造商:Texas Instruments 功能描述: |
| TSC2101 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:AUDIO CODEC WITH INTERATED HEADPHONE SPEAKER AMPLIFIER AND TOUCH SCREEN CONTROLLER |
| TSC2101_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:AUDIO CODEC WITH INTEGRATED HEADPHONE, SPEAKER AMPLIFIER AND TOUCH SCREEN CONTROLLER |
| TSC2101_08 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:AUDIO CODEC WITH INTEGRATED HEADPHONE, SPEAKER AMPLIFIER AND TOUCH SCREEN CONTROLLER |
| TSC2101EVM | 功能描述:顯示開發(fā)工具 TSC2101 Eval Mod RoHS:否 制造商:4D Systems 產(chǎn)品:4Display Shields 工具用于評估:?OLED-160-G1, ?OLED-160-G2 接口類型:Serial 工作電源電壓:5 V |
發(fā)布緊急采購，3分鐘左右您將得到回復。