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C6748 connected with ADS1606EVM

Tomas Vanac
Prodigy 15 points
Other Parts Discussed in Thread: ADS1606

Hello,

I have for my study work the C6748 LCDK and ADS1606 EVM - 16bit analog-to-digital evaluation board

(http://www.ti.com/lit/ug/slau122a/slau122a.pdf).

I´m seeking the best and easiest way to connect ADC to the LCDK. I think I could use the EMIFA interface in asynchronous mode. Then the connection would look like this:

ADS ->  LCDK 

data connector J2/P2 D[0-15] -> J14 EMA_D[0-15]

LCDK -> ADS

J14 EMA CSn_2 -> control connector J3/P3 pin 1 - CS

J14 EMA WEn -> control connector J3/P3 pin 3 - WR

J14 EMA OEn -> control connector J3/P3 pin 5 - RD

J14 EMA CLK -> control connector J3/P3 pin 19 - DRDY OUT

J14 EMA _A[0-1] -> control connector J3/P3 pin 11,13 - A2, A3

But I'm new in this and this solution might be wrong, so please could you have a look on it and say, what is wrong?

Thank you,

Tomas

  • 0
    Expert 2795 points
    Hi Tomas,
    I got your email, it was long time ago since I wrote the code for ADC and it seems similar to the examples that I used so I think you are on the right track, but what you need is already on the forum. Remember to setup the timer to trigger ADC conversion start and pins multiplexer to select correct peripheral for this pin. Use a scope to make sure the conversion start signal reaches the ADC and then it reports conversion complete back to EMIFA then you can configure your DMA transfers. Also the correct edge (low to high or high to low) as expected by ADC datasheet.
    Best regards,
    David.