Vendor: Nuclei System Technology Category: I2S

Serial Audio Interface/Inter-IC Sound

The SAI interface (Serial Audio Interface) offers a wide set of audio protocols due to its flexibility and wide range of configur…

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Overview

The SAI interface (Serial Audio Interface) offers a wide set of audio protocols due to its flexibility and wide range of configurations. Many stereo or mono audio applications may be targeted. I2S standards, LSB or MSB-justified, PCM protocols may be addressed for example. SPDIF output is offered when the audio block is configured as a transmitter. To bring this level of flexibility and reconfigurability, the SAI contains two independent audio subblocks. Each block has it own clock generator and I/O line controller. The SAI works in master or slave configuration. The audio subblocks are either receiver or transmitter and work synchronously or not (with respect to the other one). The SAI can be connected with other SAIs to work synchronously.

Key features

  • Independent two SAI(SAI1,SAI2)
  • Independent audio subblocks which can be transmitters or receivers with their respective FIFO in SAI
  • 16-word integrated FIFOs for each audio subblock
  • Synchronous or asynchronous mode between the audio subblocks
  • Possible synchronization between multiple SAIs
  • Master or slave configuration independent for both audio subblocks
  • Clock generator for each audio block to target independent audio frequency sampling when both audio subblocks are configured in master mode
  • Data size configurable: 8-, 10-, 16-, 20-, 24-, 32-bit
  • Audio protocol: I2S(I2S_Philips_standard, I2S_LSB or I2S_MSB-justified,long-PCM or short-PCM), TDM, AC’97, spdif, PDM
  • PDM interface, supporting up to 4 microphone pairs , and master rx mode
  • Free protocol(I2S, LSB or MSB-jestified,short pcm,long pcm) interface, supporting up to 4 wires
  • SPDIF output available if required
  • Up to 16 slots available with configurable size
  • Number of bits by frame can be configurable
  • Frame synchronization active level configurable (offset, bit length, level)
  • First active bit position in the slot is configurable
  • LSB first or MSB first for data transfer
  • Mute mode
  • Stereo/Mono audio frame capability
  • Communication clock strobing edge configurable (SCK)
  • Error flags with associated interrupts if enabled respectively
    • Overrun and underrun detection,
    • Anticipated frame synchronization signal detection in slave mode,
    • Late frame synchronization signal detection in slave mode,
    • Codec not ready for the AC’97 mode in reception
  • Interruption sources when enabled:
    • Errors,
    • FIFO requests
  • 2-channel DMA interface in SAI

Specifications

Identity

Part Number
SAI
Vendor
Nuclei System Technology
Type
Silicon IP

Files

Product Sheet Download

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Provider

Nuclei System Technology
HQ: China
Nuclei System Technology is a top RISC-V processor IP vendor based in China . Nuclei is dedicating to develop configurable low-power and high-performance 32/64-bit RISC-V processors and related solutions for AIoT applications. Nuclei has developed several series products to address the full range of embedded system applications, including N100, N200, N300, N/NX/UX 600, with extensible and security features. We have collaborated with many well-known companies for silicon-proven solutions, e.g. the first RISC-V general MCU - GDVF103 with GigaDevice.
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Frequently asked questions about I2S IP cores

What is Serial Audio Interface/Inter-IC Sound?

Serial Audio Interface/Inter-IC Sound is a I2S IP core from Nuclei System Technology listed on Semi IP Hub.

How should engineers evaluate this I2S?

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