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Sampling Issues

Started by Eric Cheng October 24, 2003
Hi,

In regards to a TMS320C6701 EVM/THS1209 daughterboard setup
C6701 EVM: http://focus.ti.com/docs/prod/folders/print/tms320c6701.html
THS1209 EVM: http://focus.ti.com/docs/prod/folders/print/ths1209.html (acts as a
ADC)

Setup:
DSP linked to PCI slot in host PC.
Daughter board connected through EMIF (daughterboard Interface) to host DSP
BNC connectors off the daughterboard include the following:
1. EXT CLK is a function generator issuing a square waveform at 7.2MHz (5Vpp,
2.5Vdc).
2. There is a T-connector at BINP which links to AINP (which should be inactive
according to SLAU065) and a function generator supplying a 1.8Vpp, 0Vdc, sine
wave at 250 KHz.
...the reason why I put the AINP and BINP together i know not why, some Tech
Support guy at TI told me to do that. If someone knows why you do this/what
it's supposed to do, please do share.

Problem: I can't seem to find where these analogue values that have been
converted to digital are in memory. As well, I can't seem to locate where in
the sample code the memory location was assigned for the
sampled values are.

What I've tried: according to http://focus.ti.com/lit/ug/spru197d/spru197d.pdf
section 3.1 Memory maps. (map1), I've looked at the memory activity in each of
the IPRAM, IDRAM, CE0, CE1, CE2 and CE3. and did not find anywhere where this
data could be. I've looked at each of these sections
in detail over an elapsed time.

Thanks for any help you may be able to provide.

Regards,
eric