logo

English

사운드 전용, 통신 채널인 I2S 스펙

by digipine posted Nov 02, 2017
?

Shortcut

PrevPrev Article

NextNext Article

Larger Font Smaller Font Up Down Go comment Print Attachment
?

Shortcut

PrevPrev Article

NextNext Article

Larger Font Smaller Font Up Down Go comment Print Attachment

1.0 INTRODUCTION

 

Many digital audio systems are being introduced into the consumer audio market, including compact disc, digital audio tape, digital sound processors, and digital TV-sound. The digital audio signals in these systems are being processed by a number of (V)LSI ICs, such as:

• A/D and D/A converters;
• digital signal processors;
• error correction for compact disc and digital recording; • digital filters;
• digital input/output interfaces.

Standardized communication structures are vital for both the equipment and the IC manufacturer, because they increase system flexibility. To this end, we have developed the inter-IC sound (I2S) bus – a serial link especially for digital audio.

 

2.0 BASIC SERIAL BUS REQUIREMENTS

 

The bus has only to handle audio data, while the other signals, such as sub-coding and control, are transferred separately. To minimize the number of pins required and to keep wiring simple, a 3-line serial bus is used consisting of a line for two time-multiplexed data channels, a word select line and a clock line.

Since the transmitter and receiver have the same clock signal for data transmission, the transmitter as the master, has to generate the bit clock, word-select signal and data. In complex systems however, there may be several transmitters and receivers, which makes it difficult to define the master. In such systems, there is usually a system master controlling digital audio data-flow between the various ICs. Transmitters then, have to generate data under the control of an external clock, and so act as a slave. Figure 1 illustrates some simple system configurations and the basic interface timing. Note that the system master can be combined with a transmitter or receiver, and it may be enabled or disabled under software control or by pin programming. 

 

첨부파일 참조

TAG •

List of Articles
No. Subject Author Date Views
27 헤드폰과 스피커 테스트를 위한 Tone Sound File 모음 file digipine 2022.02.25 570
26 진공관 앰프 회로도 및 제작 매뉴얼 file digipine 2017.11.02 3775
25 저작권이 만료된 클래식 음악 스트리밍 사이트 file digipine 2017.11.02 2916
24 이어폰 드라이버 정리 (다이나믹 VS BA) lizard2019 2020.02.11 1462
23 음향 측정 프로그램 SOUND ANALYSIS & CALIBRATION SOFTWARES file digipine 2017.11.02 12320
22 오디오 효과 정리 digipine 2017.11.02 2325
21 소음즉정 기준 dB(A) 단위 file lizard2019 2020.05.25 1297
20 소음 dB 측정 방법 file lizard2019 2020.05.25 1622
» 사운드 전용, 통신 채널인 I2S 스펙 file digipine 2017.11.02 9519
18 벨소리 : 이시은 - 바람처럼 떠나버린 너 file lizard2019 2019.05.20 598
17 WebRTC의 RED Audio Codec에 대해서 1 digipine 2024.04.15 45
16 TEST용 동영상 모음 03 file digipine 2020.08.26 398
15 TEST용 동영상 모음 02 file digipine 2020.08.26 206
14 TEST용 동영상 모음 01 file digipine 2020.08.26 263
13 Test mp3 music files file digipine 2021.01.24 897
12 Semibreve DA10S DAC with XMOS 768kHz Oversampling 2 file lizard2019 2024.05.10 50
11 Sample mp3 files for test file digipine 2022.11.25 335
10 Phono Amp DIY kit digipine 2023.10.31 214
9 PCM Volume Control 구현 방법 digipine 2022.04.13 651
8 OP Amp의 음색 정리 자료 1 digipine 2017.11.02 9243
Board Pagination Prev 1 2 Next
/ 2