hello,
i'm student and i'm working on the receiver parts of "SERDES" ,my program is in VHDL.
for explain my project, I receive a incoming serial data.
In the first time, i use a PRBS for test the "data".
In the second time, my data are send in a demultiplexer 1b/20b .
And now i must realize in front of decoder 10b/8b a commas word alignement in VHDL.
so for the moment i detect the commas K28.5(on 10b) on my parallel data ("DATAIN" on 20b) and my problem is for aligned my data.
in fact, for example i'm detected my commas(K28.5) in DATAIN( 13 downto 4) and for aligned the future data i must put the commas in DATAIN( 9 downto 0) because after that the data will be aligned and send to my decoder.
But i can't see how do this without loose an data.
I don't found a VHDL code about this, so if you have a source code about "commas and word alignement" or just explain me how do this !
Sorry for my english i'm french.
I thank you in advance for all informations on this subject
Mathieu
i'm student and i'm working on the receiver parts of "SERDES" ,my program is in VHDL.
for explain my project, I receive a incoming serial data.
In the first time, i use a PRBS for test the "data".
In the second time, my data are send in a demultiplexer 1b/20b .
And now i must realize in front of decoder 10b/8b a commas word alignement in VHDL.
so for the moment i detect the commas K28.5(on 10b) on my parallel data ("DATAIN" on 20b) and my problem is for aligned my data.
in fact, for example i'm detected my commas(K28.5) in DATAIN( 13 downto 4) and for aligned the future data i must put the commas in DATAIN( 9 downto 0) because after that the data will be aligned and send to my decoder.
But i can't see how do this without loose an data.
I don't found a VHDL code about this, so if you have a source code about "commas and word alignement" or just explain me how do this !
Sorry for my english i'm french.
I thank you in advance for all informations on this subject
Mathieu