8b/10b in altgx

Question

Hello, i am using 8b/10b encoding scheme and while configuring altgx i have set the word alignment pattern to 0010111100 (k28.5), so when tx_digitalreset is asserted i have made tx_ctrlenable to "1111" and when it is deasserted i have made tx_ctrlenable as "0000" and i have sent the Align primitive(7B4A4ABC)  from the transmitter but at the reciever i am getting the incorrect data out.
Do i need to change the tx_ctrlenable while sending the align primitive(7B4A4ABC) since the LSB is BC.

sengkok_l_intel · Answer

Hi,

What device you are using? You probably can refer to Figure 1-6 to work with 8 bits data first.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyclone-iv/cyiv-52001.pdf

Regards -SK

sengkok_l_intel · Answer

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8b/10b in altgx

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