Hello yuanfei,
Quote:
What the CPLD used for?
Please refer to section 1.1 of the LH7A404 IO Controller Spec for a description of CPLD functionality.
http://www.logicpd.com/do...4/70000234_Rev_D.pdf
Quote:
Where Can I get the CPLD source code.
The LH7A404 card engine comes with the CPLD pre-programmed. If you require CPLD source your salesperson can work on getting a price quote for the purchase of CPLD source. While Logic does not freely provide CPLD source you can update to the latest CPLD version by using the 'update' command in LoLo and the .upd files that are posted on the LH7A404 product downloads page.
Please post back here if you have any further questions.
Thanks,