Answers Database
Libraries Guide 1.5: Input Frequency Range of CLKDLL is incorrect
Record #5360
Problem Title:
Libraries Guide 1.5: Input Frequency Range of CLKDLL is incorrect
Problem Description:
Urgency : Standard
Problem Description:
Refering to the Libraries Guide that comes with the 1.5/1.5i
software. Whilst examing about the CLKDLL it quotes the input
frequency range of the CLKDLL to be 30-120MHZ. This is
incorrect.
Solution 1:
Always refer to the latest datasheet avaiable from our WEB site
for accurate timing information. Or alternatively for Virtex
look at the timing parameters mentioned in the Application Note
Using the Virtex Delay Locked Loop. This can be found at the
following URL :
http://www.xilinx.com/xapp/xapp132.pdf
The correct input frequency range is 25-90 MHZ.
End of Record #5360 - Last Modified: 01/11/99 14:02 | 
