I2S ADC interfacing with DSP Processor

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SukhdeepMankoo
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I2S ADC interfacing with DSP Processor

Post by SukhdeepMankoo » Thu Jan 07, 2010 5:02 pm

May McBSP or McASP used for interfacing with I2S based ADC? can i use both or one of them for getting data from ADC using I2S.
Kindly tell me, how can i do so.
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Re: I2S ADC interfacing with DSP Processor

Post by Neo » Fri Jan 08, 2010 5:27 am

ADC with I2S can be connected to McBSP. For McASP check AIC33 codec which was connected through I2S.
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Re: I2S ADC interfacing with DSP Processor

Post by SukhdeepMankoo » Fri Jan 08, 2010 6:56 pm

Thanks,
Can i connect ADC with I2S protocol with McASP. where i will be able to pick up digital data from ADC. can i connect CS5361 ADC using I2S protocol with McASP of(TMS320C6413).

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Re: I2S ADC interfacing with DSP Processor

Post by Neo » Fri Jan 08, 2010 9:28 pm

I have only seen AIC33 ADC on McASP which is a PCM codec with I2S. You will have to check the specs on that (My idea is it should be possible). (Better compare your ADC with AIC33 electrical spec so you can get an idea).
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Re: I2S ADC interfacing with DSP Processor

Post by SukhdeepMankoo » Sat Jan 09, 2010 6:25 pm

Thanks,
But i want to interface CS5361 with TMS320C6413 through McASP. can i connect it will TMS320C6413? if yes, can i read the ADC digital data by McASP as we do in ordinary ADC.

Kindly tell me, i am totally doubt full about it.

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Re: I2S ADC interfacing with DSP Processor

Post by Neo » Sat Jan 09, 2010 8:16 pm

I'm sure it is possible but I know you expect something more than that. This is the reason for people depending on evaluation modules with bulletproof schematics. As this seems not done yet on one, you will have take the risk and experiment with a scope, etc... I can tell you one thing, you must thoroughly go through the spec to see whether ratings are matching, etc... so we can be confident that it should work together.
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Re: I2S ADC interfacing with DSP Processor

Post by SukhdeepMankoo » Mon Jan 11, 2010 2:07 pm

Thanks,
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Re: I2S ADC interfacing with DSP Processor

Post by Neo » Mon Jan 11, 2010 2:47 pm

If you could use TLV320AIC23B CODROBOT.LK (2/2 ADC/DAC), you can find the schematic on connecting this to McASP of TMS320DM642 chip from here.

You can also use AIC33 and I heard there is a more improved low-power codec available now.
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Re: I2S ADC interfacing with DSP Processor

Post by SukhdeepMankoo » Tue Jan 12, 2010 1:33 pm

Thanks,
In my project, i want to interface nine CS5361(Based on I2S) with DSP processor. I have read the data sheet of TMS320C6413 which has two McASP. Each McASP can be interfaced with six ADC(like CS5361). where i will be able to pick up the digital data through I2S protocol based ADC. Can i interface it with TMS320C6413. i have already done it with ARM7TDMI-S, where i am using analog switch to get nine analog signal through single CS5361.which is running successful, but not getting a good performance as i am desiring.Because analog switch make the system slow.

Kindly tell me, may I interface nine CS5361 with two TMS320C6413, where i am getting ADC steps from all the nine CS5361 through two McASP.

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Re: I2S ADC interfacing with DSP Processor

Post by Neo » Tue Jan 12, 2010 3:16 pm

We didn't interface this chip to any DSP processor that we used so far and we can't find information on the net as well. So you may submit this question on Ti forum to see whether Ti engineers can help you with this. If you can't trial and try, that's the best I could recommend to you.

Also you may try to find a DSP with 2 McASP ports so you can do it within a single chip. TMS320C6418 can be a good option.
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