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Inter-IC Sound Bus (I2S) | 赛普拉斯半导体

Inter-IC Sound Bus (I2S)

2018 年 7 月 24 日


  • 仅用于主控
  • Single- and multi-channel (up to 10 channels) I2S support
  • 每次采样 8 到 32 数据位
  • 16、32、48 或 64 位字选择周期
  • Data rate up to 96 kHz with 64-bit word select period
  • Audio clip detection in I2S Rx mode
  • Byte swap audio samples to match USB audio class endianness requirement


集成 Inter-IC 音频总线 (I2S) 是用于将数字音频器件连接在一起的串行总线接口标准。此规范来自于 Philips® Semiconductor(I2S 总线规范;1986 年 2 月,修订时间为 1996 年 6 月 5 日)。

The I2S component operates in master mode only. It also operates in two directions, as a transmitter (Tx) and a receiver (Rx). The data for Tx and Rx are independent byte streams. The  byte streams are packed with the most significant byte first and the most significant bit in bit 7 of  the first word. The number of bytes used for each sample (a sample for the left or right channel)  is the minimum number of bytes to hold a sample.