Answers Database
Virtex CLKDLL: Will the CLKDLL lock if the input frequency is below 25Mhz, if not, what would the outputs of the CLKDLL be like.
Record #7402
Product Family: Hardware
Product Line: Virtex
Product Part: Virtex General Hardware
Problem Title:
Virtex CLKDLL: Will the CLKDLL lock if the input frequency is below 25Mhz, if not, what
would the outputs of the CLKDLL be like.
Problem Description:
Urgency: Standard
Problem description:
If the input to the CLKDLL is less than 25Mhz, will the CLKDLL lock, and what will the
outputs of the CLKDLL be like
Solution 1:
If the input frequency of the CLKDLL is less than 25Mhz, CLKDLL will not lock.
The CLKDLL will continous try to achieve lock on the CLKIN signal
and the output will slew in phase, period and duty cycle as the control
logic attempts to lock on the input clock.
End of Record #7402 - Last Modified: 01/25/00 09:34 |
