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| 型號(hào)： | TLV320AIC3111IRHBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 音頻／視頻放大 |
| 英文描述： | AUDIO AMPLIFIER, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁(yè)數(shù)： | 111/156頁(yè) |
| 文件大?。?/td> | 1701K |
| 代理商： | TLV320AIC3111IRHBR |
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SLAS644B – JULY 2009 – REVISED OCTOBER 2009
www.ti.com
Each of these INT1 and INT2 interrupts can be routed to output pins GPIO1 or DOUT. These interrupt
signals can either be configured as a single pulse or a series of pulses by programming page 0 /
register 48, bit D0 and page 0 / register 49, bit D0. If the user configures the interrupts as a series of
pulses, the events trigger the start of pulses that stop when the flag registers in page 0 / registers 44, 45,
and 50 are read by the user to determine the cause of the interrupt.
5.6.7
Key-Click Functionality With Beep Generator (PRB_P25)
A special algorithm has been included in the digital signal processing block PRB_P25 for generating a
digital sine-wave signal that is sent to the DAC. This functionality is intended for generating key-click
sounds for user feedback. The sine-wave generator is very flexible (see Table 5-35) and is completely
register programmable. Programming page 0 / register 71 through page 0 / register 79 (8 bits each)
completely controls the functionality of this generator and allows for differentiating sounds.
The two registers used for programming the 16-bit sine-wave coefficient are page 0 / register 76 and
page 0 / register 77. The two registers used for programming the 16-bit cosine-wave coefficient are
page 0 / register 78 and page 0 / register 79. This coefficient resolution allows virtually any frequency of
sine wave in the audio band to be generated, up to fS/2.
The three registers used to control the length of the sine-burst waveform are page 0 / register 73 through
page 0 / register 75. The resolution (bit) in the registers of the sine-burst length is one sample time, so this
allows great control on the overall time of the sine-burst waveform. This 24-bit length timer supports
16,777,215 sample times. (For example, if fS is set at 48 kHz, and the register value equals 96,000d
(01 7700h), then the sine burst lasts exactly 2 seconds.) The default settings for the tone generator, based
on using a sample rate of 48 kHz, are 1-kHz (approximately) sine wave, with a sine-burst length of five
cycles (5 ms).
Table 5-35. Beep Generator Register Locations (Page 00h)
LEFT
RIGHT
BEEP LENGTH
SINE
COSINE
BEEP
MSB
MID
LSB
MSB
LSB
MSB
LSB
CONTROL
REGISTER
71
72
73
74
75
76
77
78
79
Table 5-36. Example Beep-Generator Settings for a 1000-Hz Tone
BEEP FREQUENCY
BEEP LENGTH
SINE
COSINE
SAMPLE RATE
MSB
MID
LSB
MSB
LSB
MSB
LSB
Hz
(hex)
1000(1)
0
EE
10
D8
7E
E3
48,000
(1)
These are the default settings.
Two registers are used to control the left sine-wave volume and the right sine-wave volume independently.
The 6-bit digital volume control used allows level control of 2 dB to –61 dB in 1-dB steps. The left-channel
volume is controlled by writing to page 0 / register 71, bits D5–D0. The right-channel volume is controlled
by writing to page 0, register 72, bits D5–D0. A master volume control that controls the left and right
channels of the beep generator can be set up by writing to page 0 / register 72, bits D7–D6. The default
volume control setting is 2 dB, which provides the maximum tone-generator output level.
For generating other tones, the three tone-generator coefficients can be found by running the following
script using MATLAB :
Sine = dec2hex(round(sin(2*pi*Fin/Fs)*2^15)) Cosine =
dec2hex(round(cos(2*pi*Fin/Fs)*2^15)) Beep Length =
dec2hex(floor(Fs*Cycle/Fin))
where,
fin = Beep frequency desired
fS = Sample rate
Cycle = Number of beep (sine wave) cycles that are needed
58
APPLICATION INFORMATION
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TLV320AIC3111
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| TLV320AIC3111IRHBT | 功能描述:接口—CODEC Low-Pwr Audio CODEC RoHS:否 制造商:Texas Instruments 類(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| TLV320AIC3120 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:Low-Power Mono Audio Codec With Embedded miniDSP and Mono Class-D Speaker Amplifier |
| TLV320AIC3120EVM-U | 功能描述:音頻 IC 開(kāi)發(fā)工具 TLV320AIC3120EVM-U Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類(lèi)型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| TLV320AIC3120IRHBR | 功能描述:接口—CODEC Low-Pwr Audio CODEC RoHS:否 制造商:Texas Instruments 類(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| TLV320AIC3120IRHBT | 功能描述:接口—CODEC Low-Pwr Audio CODEC RoHS:否 制造商:Texas Instruments 類(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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