Configurable Multi-channel Serial Audio Receiver

The TDM-Rx-Pro (CWda18) is part of the AudioWorks™ family of proven audio interface cores featuring a configurable multi-channel audio interface designed to input serial (TDM) digital audio streams from various manufacturers. The TDM-Rx-Pro front-end also supports the well known stereo formats: Philips I²S, Left-Justified or Right-Justified. The TDM-Rx-Pro backend is supplied with a choice of AMBA®, CoreConnect™ or a flexible parallel interface.

Specifications

• Runtime configurable input format: multi-channel serial audio (TDM), or stereo I2S, LeftJustified or Right-Justified
• Supports all commonly used sample rates including 32, 44.1, 48, 96 and 192 kHz
• Supports any audio sample sizes up to 32 bits
• Pre-synthesis configurable sample FIFO depth
• Reports FIFO empty condition
• Reports number of samples in FIFO
• Runtime configurable UpperFIFO-Limit; a request signal is activated when this limit is exceeded
• Supports up to 128 audio channels
• Supports slave or master modes of the audio bus
• Double clock domain design: output clock is unrelated to the serial audio bit clock
• Reports loss of channel order
• Supports TDM audio formats from multiple vendors

Interfaces

• AMBA-APB, AMBA-AHB or parallel interface for configuration, control and status
• I2S/TDM interface for audio input
• AMBA-APB, AMBA-AHB or parallel interface for audio output