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Altera_Forum
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11 years ago

I cannot receive a pattern if there are many consecutive '1's without encoding it

Hello, I tried a design with a 'Custom phy' tranceiver block in duplex mode in order to transmit a 32-bit pattern (1010111111111111111111111111111) and receive it (via an external connection TX=>R...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Hi,

CDR might lose lock to data if the run length violate the specification. It seems like there is no mentioned of the device that you are using. However, you may look into the datasheet and look for run length specs. Note that since you are sending long stream of 1 with a few 0 inside. You might want to consider signal integrity issue which might cause incorrect data received.