May i ask you about the ADS7861. I am facing problem in interfacing with ADC from DE2 board. I used a voltage translator for the conversion of 3.3V to 5 V. The waveform is expected at the output of this translator but problem occurred when i connected to ADC( i supply 2 control signals). I doubt if it is the internal structure of ADC that makes the waveform distorted when 2 signals are transferred. No distortion if only 1 connection is made between ADC and translator but there will be if more than 1 lines are connected. Thus, i doubt if it is the internal structure/ connection has been shorted and this make the signal waveforms mixed (It seen like 2 waveforms are mixed)
You may refer to these pictures under the links:
http://rapidshare.com/files/371894736/upload.rar.html.
P/s : My SPI is 3 control signals (clk, convst and cs) to ADC and 2 signals back to DE2 board(busy and SDO).
