Hi!
As I understand it there are serveral audio interfaces available on the SAMV71Q21.
1 x SSC with I2S and TDM support
2 x I2SC with each with data in and data out
1 x Ethernet AVB
Are these exposed in the AWE Core / Audio Weaver and what are current sounds formats available?
The SAM V71 Xplained board appears to have a CS2100CP pll on board for use with Ethernet AVB. Is this a clock source option for Audio Weaver?
Regards,
David.
12:02pm
After some investigation the I2SC units on V71 do not work at all for Revision A silicon. See section 63 errata.
63.1.8 Inter-IC Sound Controller (I2SC)
Issue: The I2SC is not available.
Workaround: None.
However, Revision B silicon has this errata sugesting the I2SC now "works".
63.2.6 Inter-IC Sound Controller (I2SC)
Issue: I2SC first sent data corrupted
Right after I2SC reset, the first data sent by I2SC cont roller on the I2SDO line is corrupted. The following data are not affected.
Workaround: None.
I also discovered from the Amtel forums that the SSC for I2S only works properly in Left-Justified Mode. Can DSP Concepts confirm what ports, sample rates and audio types are available for the V71 Ultra board? Are TDM formats available and tested?
6:15pm
Hey David,
The AWE Core is a set of libraries that you can integrate onto any hardware platform. The audio buffers that you pass into the AWE Core can be filled in any way you like, so yes, all those audio interfaces are available to be used with the AWE Core.
Likewise, the C2100CP pll can also be used as a clock source for AWE.
I recommend you download the SAMV71 reference BSP available at www.dspconcepts.com. This will provide a reference design for integrating the AWE Core for a similar target.
-Axel
8:06pm
Thanks Axel. I'm reviewing the BSP now.
Here's an interesting target if you ignore the radio - Cortex M3 with Tensilica HiFi2 hub with 7 x i2s/TDM + some ADC/DACs.
http://translate.silabs.com/Support%20Documents/TechnicalDocs/Si47911-12...
That could make for a very neat SoC with AWE Core support. I also wonder what became of the Wolfson WM0011 (Tensilica Hifi EP based) with three i2s/TDM modules.
https://d3uzseaevmutz1.cloudfront.net/pubs/proDatasheet/WM0011_v4.1.pdf