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參數(shù)資料
| 型號(hào)： | LM4935WLX |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | ADC |
| 英文描述： | Audio Sub-System with Dual-Mode Stereo Headphone and Mono High Efficiency Loudspeaker Amplifiers and Multi-Purpose ADC |
| 中文描述： | 音頻子系統(tǒng)的雙模單聲道立體聲耳機(jī)和揚(yáng)聲器放大器的高效率和多功能模數(shù)轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 55/112頁(yè) |
| 文件大小： | 5017K |
| 代理商： | LM4935WLX |
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12.0 Status & Control Registers
(Continued)
12.32 DIGITAL AUDIO DATA FORMATS
I2S master mode can only be used when the DAC is enabled unless the ADC_I2S_M bit is set. PCM Master mode can only be
used when the ADC is enabled. If the PCM receiver interface is operated in slave mode the clock and sync should be enabled
at the same time as the PCM receiver uses the first PCM frame to calculate the PCM interface format. This format can not be
changed unless a soft reset is issued. It is strongly recommended that the LM4935 is operated in master mode as this eliminates
the risk of sample rate mismatch between the data converters and the audio interfaces.
In master mode the I2S_CLK has a 60/40 duty cycle and a frequency of 50*fs. In slave mode the PCM and I2S receivers only
record the 1st 16 and 18 bits of the serial words respectively. The I2S format is as follows:
When SAR SDO data is passed to the I2S, it is left aligned (MSB aligned) to allow lower I2S resolutions to be used.
If the DAC is driven from the PCM interface then the left channel of the DAC is used and the right channel is inactive.
20134115
FIGURE 10. I
2
S Serial Data Format (Default Mode)
20134116
FIGURE 11. PCM Serial Data Format (16 bit Slave Example)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4936 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 2W Audio Power Amplifiers with Volume Control and Selectable Control Interface (SPI or I2C) |
| LM49360 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Mono Class D Audio Codec PMU with Ground Referenced Headphone Amplifiers, Earpiece Driver, Audio DSP, 2 Step-Down DC-DC Converters, and 7 LDO Regulators |
| LM49360RL | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Mono Class D Audio Codec PMU with Ground Referenced Headphone Amplifiers, Earpiece Driver, Audio DSP, 2 Step-Down DC-DC Converters, and 7 LDO Regulators |
| LM49360RLX | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Mono Class D Audio Codec PMU with Ground Referenced Headphone Amplifiers, Earpiece Driver, Audio DSP, 2 Step-Down DC-DC Converters, and 7 LDO Regulators |
| LM4936MH | 功能描述:音頻放大器 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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