Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

to use altlvds,how I can use LVDS bit clock and LVDS frame clock of ADC at the same t

In my board, there are 5AGXFB3H4F40C5N and TI ADS5294. The ADS5294 is a 80-MSPS 8-Channel ADC,The digital data from each channel ADC is output over two wires of LVDS output lines depending on the ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

--- Quote Start ---

Yesterday, I tried pulsing all the bits of rx_channel_data_align[3:0] at the same time like following:

In the test bench, I use a while loop to check the output of LVDS frame clock, if the result is 8'hf0, then stop pulsing; if the result is not 8'hf0, then pulsing all the bits of rx_channel_data_align[3:0] at the same time.

And this method worked.

--- Quote End ---

If phase difference between clock and data is same for all channels (ADC lines) this method works. This is true for ModelSim. In real may be situation when different shift is required for all channels. If you use this method you cannot align all channels correctly.

Regards,

Andrei