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Altera_Forum
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15 years ago

Using the ALTLVDS_RX DDR in = DDR out?

Hi, Can anyone tell me that by using ALTLVDS_RX core provided by Altera, and if i use deserialization factor of 6; if the input in DDR format, the output of this block will be in DDR format too...
Altera_Forum's avatar
Altera_Forum
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15 years ago

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What's DDR format? A serialization factor of 6 means a single bit input(on the port) and a 6-bit output. You have to determine the word alignment. Note that it does use the DDR registers in the I/O cell, but that is somewhat irrelevant, as there will be another stage of serialization to get it down to /6.

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DDR=double data rate, meaning a valid data is on the rising and also the falling edge of the fast clock.

I know LVDS uses DDR format, but i am not sure what is the output format of ALTLVDS_RX.

And I am not sure what are you trying to say.

Michael