reading 16bit parallel data from ADC on c64x+

Travis Fagerness

I am new to DSP work. I am trying to find a way to hook a 16bit parallel ADC to the DSP so I can do processing on it. What interface can I use? How do you program that interface? I haven't found any documentation on how to program the DSP other than the dspLIB. So, I know how to use the dspLIB, but how do you actually get data in and out of the DSP?

over 13 years ago

0 Victor Kazmirenko over 13 years ago

Guru 13202 points

You have to consider whole picture of your design. Perhaps, some workarounds could be found. However, one of the common ways is to use some glue logic between DSP and ADC. Often FPGA serves this purpose.

0 Travis Fagerness over 13 years ago in reply to Victor Kazmirenko

Prodigy 70 points

I've came across some posts suggesting EMIF, but how would you do that?

And in a broader sense, how are ADC's usually connected to DSPs? And what is the throughput one can expect? I am trying to get 65Msps.

0 Sam Kuzbary over 13 years ago in reply to Travis Fagerness

Expert 2655 points

Greetings,

From your initial description, you want to use an asynchronous ADC with a C64x+, and your initial option is going to be the ASYNC EMIF, except its transfer speed may be an issue going up to a reliable 65M sample rate. Typically you use a serial converter connected on one of the high speed interface IP on chip.

Good Luck,

Sam

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reading 16bit parallel data from ADC on c64x+