Creating Multimedia Future Today
2008-04-02
Coreworks releases the CWda19 - Configurable Multi-Channel Digital Audio Serial Output
The CWda19 IP core is a configurable multi-channel audio interface component designed to output a serial (TDM) digital audio stream. The CWda19 can be configured at runtime to support an arbitrary number of audio channels (up to 128) and number of bits per sample (8, 12, 16, 20, 24 and 32 bits). The CWda19 also supports the well known stereo formats: Philips I2S, Left-Justified or Right-Justified. The audio samples are placed into the transmission FIFO where the channels are ordered and interleaved. A runtime configurable output stage retrieves the samples from the FIFO and serializes the data to generate the serial audio. The FIFO input is clocked with the core clock (cw_clk) unrelated to Fs (it must be clocked at a frequency above Number_of_Channels x Fs, where Fs is the sample rate frequency). The FIFO output is clocked with the serial audio clock (sclk or mclk) at frequency Frame Period x Fs. The CWda19 IP core is supplied with either AMBA™ (CWda19a) or CW-link (CWda19p) backend interface.
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