basic ADAU1452 / 1466 board help

Hello,

I am pretty familiar now with the ADAU1701 and 176x series. I bought one of the many ADAU1452 boards on ebay produced by mediaworks.taobao.com. I expected to get a 1452 board but they ran out and sent me a 1466.

Expecting the 1466 board to be somewhat like the ADAU1701, I now found it is quite different and need some basic help. I'm sure others are using this inexpensive board and would like to get some pointers.

I started a project and was able to download it using SPI. I was shocked as getting USBi to work reliably with I2S has been difficult. I had to activate the SPIDF output as I don't see any DACs on the chip or board. I see several serial data outputs that I'm not familiar with and could use some info on how they are normally connected? My application is synthesizer design related so I am mostly just generating a mix of tones so I need first to get output. I was able to activate the SPIDF and it seems to be acting as it should. I plan to attach a crystal semi DAC to it to make sure but a basic program with a sine tone feeding the SPIDF loaded, runs and the SPIDF data looks right. I don't have a schematic for the board yet to see if the 3.44V peak to peak signal is being driven or coming directly from the chip.

So what is usually used to interface to the four serial ports? They seem to be running at the sample rate of f48K. Each port has an SDATA, BCLK and LRCLK line.

Those answers should get me going. I'll do more reading in the meantime.

Thanks.

Jerry

Audio Signal Processors

adau1452

SigmaDSP Audio Processors

adau1701