i2s interface

I2S Audio bus Learning (iii) I2S controller of S3C2440 1. I2S controller structure diagram: Inter-IC Sound of s3c2440a (IIS) the bus interface is used as an encoding/decoding interface to connect external 8/16-bit stereo audio decoding IC for mini drive and portable applicat

, it can discard the redundant low-level data in the data frame. If the receiving end can process more than the sending end, you can manually fill in the remaining bits (usually zero complement ). This synchronization mechanism makes it easier for digital audio devices to interconnect with each other without causing data misplacement. To ensure the correct transmission of digital audio signals, the sender and receiver must adopt the same data format and length. Of course, for

52840 I2S Summary Err_code = Nrf_drv_i2s_start (M_buffer_rx, M_buffer_tx, i2s_buffer_size, 0); This function is used to turn on the transmission of I2S Nrf_drv_i2s_stop (); Transfer to stop the I2S The I2S transmission itself is a DMA, even when the code stops running at the end of the debugging, and the DM

origin:http://blog.csdn.net/azloong/article/details/6536855 I2S Bus Specification I2S (Inter-ic Sound) is a bus standard developed by Philips for audio data transmission between digital audio devices. In Philips's I2S standard, both the hardware interface specification and the format of digital audio data are stipula

1. Basic knowledge of I2S 1.1 I2s Introduction I2S bus, the abbreviation Inter-icsound, is a bus standard developed by Philips for audio data transmission between digital audio devices, which is specially used for data transmission between audio devices and is widely used in various multimedia systems. The I2S is also

I. Overview of I2SThe I2S (Inter-ic sound) bus is a bus standard developed by Philips for audio data transmission between digital audio devices, a bus dedicated to theData transfer between the two. A digital audio interface consisting of 4 lines, commonly used in HIFI,STB portable devices. Tx and RX signal lines are used for audio transmission. While the bit clock and the left and right clock(LRC) for synch

I2S BusThe I2S has 3 main signals: 1. Serial clock SCLK, also called bit clock (BCLK), which corresponds to each bit of digital audio, SCLK has 1 pulses. SCLK frequency =2x Sampling frequency x sample number of bits 2. Frame clock Lrck, used to toggle the left and right channel data. A Lrck of "1" indicates that the data being transmitted is the left channel, and "0" means that the data being transmitted is

Recently, a project to use the codec chip to do voice acquisition and output, the driver is used stm32f405 I2S interface. Prior to not in-depth knowledge of i2s, but probably know that it is a bus for the transmission of audio data. Originally thought there is no difficult, actually use down actually also did not feel has anything special. But still in the proces

============ Problem Description ============Android Development Board in hand, mic recording Go is i2sI'm using the audio recording software provided by Android itself soundrecoder.apkWhen recording, the small pointer that detects the sound seldom shakes, when my voice is high, I can record it, the sound is smooth, and then a high or can record!The sound is intermittent, and it's very nasty!I use the USB interface of the camera to record, (because th

==================== Problem Description ====================Android Development Board in hand, mic recording Go is i2sI'm using the audio recording software provided by Android itself soundrecoder.apkWhen recording, the small pointer that detects the sound seldom shakes, when my voice is high, I can record it, the sound is smooth, and then a high or can record!The sound is intermittent, and it's very nasty!I use the USB interface of the camera to rec

To enable MP3 playback, we recently completed the I2S driver on sep4020. The main experience is summarized as follows: 1. First, perform a series of initialization in the probe function.Is very important, and many ● Configure the gpio port Line for operating codec l3; Compared with a mixer control interface, the L3 interface corresponds to the mixer structure in

G_ak4961_i2s_tx_handle. Instance->sr __io uint32_t SR; /*!27.5.3 SPI Status Register (SPI_SR) Crcerr 8:fre Bit 8 FRE: Frame formatting error (frame format error) Note: Use this flag when the SPI is working from mode or I2S in TI #define __HAL_I2S_DISABLE (__handle__) ((__handle__)->instance->i2scfgr = ~spi_i2scfgr_i2se) Spi_i2scfgr_i2se Spi_i2scfgr_i2se_msk (0x1u (10U) 27.5.8 spi_i2s Configuration Register (SPI_I2SCFGR) 10:i2se TI Mo

In digital audio datasheet, we often see concepts such as 256fs, 384fs, 32 kHz, and 44.1 kHz mclk. Generally, three pins are used as communication interfaces in the digital audio chip: bclk, adclrc, and dout. Now let's make a summary.1. Sampling Rate: 32 kHz, 44.1 kHz, 48 khz, 96 kHz: the audio sampling rate, the higher the sound quality. In 256fs, "FS" indicates audio sampling frequency (adclrc). Here, the audio control line uses adclrc to sample 32 kHz, 44.1 kHz, 48 kHz, and 96 kHz. Adclrc con

Comparable interfaceClasses that implement the comparable interface, which can be compared to size.There is only one method in the comparable interfacepublic int CompareTo (object obj);This method: Returns 0 indicating this = = objReturns a positive number indicating this > objReturns a negative number indicating this > objClasses that implement the comparable interface determine how objects are sorted by t

The base class baseoutput explicitly inherits an interface ioutput, and the class trackoutput inherits baseoutput, and also inherits the ioutput interface. Assume that ioutput has a method output, so there are two output methods in trackoutput, one source is the base class baseoutput and the other source is the interface ioutput. This leads to confusion. What sho

One: Functional interface1. The concept of a functional interface is that this interface must have only one abstract method, which can be displayed by @functionalinterface (similar to @override), but an interface with no such annotations but only one abstract method is also a functional interface ; (Interfaces also hav

List interface, Set interface, Map interface, list interface setmap1. The List and Set interfaces inherit from the Collection interface, while Map is not the inherited Collection interface. Map does not inherit the Collection