Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
21425 Discussions

DDR3 Write Leveling and Read Calibration

MATRIX7878
New Contributor I
547 Views

Hello,

 

     I am creating my own DDR3 controller.  It is coming along well, but I have hit a few snags.  My initialization up to and including the ZQ calibration is done.  The issue then becomes trying to ensure that my write leveling and read calibration are correct.  I have them both written, but I am not confident in them.  Does anyone have any examples?  The Jedec standard for DDR3 is free to download and is also on github.  I have used the standards, but the write leveling is not very well written.  I use VHDL and my chip is a DDR3-1600 one.  My code is attached below.

 

Thank you,

 

Drew

Labels (1)
0 Kudos
1 Reply
MATRIX7878
New Contributor I
355 Views

Hello,

 

     It has been well over a month and I have not received any replies.  Does anyone know where I could look to find the answers I seek?

 

Thank you,

 

Drew

0 Kudos
Reply