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How to wire eval-ad76xxedz to DSP

Question asked by Sumit on Jul 25, 2012
Latest reply on Jul 31, 2012 by clairec

I have an eval board for AD7610 (eval - AD76xx - Rev J) and want to integrate it to a DSP via SPI.

 

DSP: SPI Master

AD7610 Eval Board: SPI Slave

 

See picture below.

Interface AD760 to SPI.PNG

 

After reading thru the document (EVAL-AD76xxEDZ) several times. 

Here are my jumper settings on the eval board

JP1,JP2: BUFF

JP3: -12V

JP4: REF

JP6: 3.3V

JP7: +12V

JP8: +12V

JP9: VDIG

JP19: AVDD

JP20: BUF

JP21: 3.3V

JP22: \CNVST: External

 

Here are S16 Select Switch

  1. Warp: Low
  2. Impulse: Low
  3. Bip: Low
  4. Ten: Low
  5. A0/M0: Low
  6. Byte/M1: Low
  7. OB/2C: Low
  8. Ser/Par: High
  9. Ext/Int: High
  10. InvSync: Low
  11. InvSClk: Low
  12. RDC: Low

 

S35 Select Switch

  1. Reset: Low
  2. PD: Low
  3. PDBUF: Low
  4. PDREF: Low

 

Since DSP will run in master SPI mode, it will provide the serial clock. So where do I wire the DSPs SPI Clock for AD7610 Conversion?

 

In stand alone mode, the gate arrays flexible logic buffers the ADC data and provides the serial clock source (40MHz).

So how do I bypass the gate array (Or do I)?

 

Is it possible to interface a DSP to AD7610 eval board via SPI?

 

Thank You,

Sumit

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