Command to measure real time

[kb33]

Hi,

Is there a command to measure instantaneous time in Verilog that is
also synthesizable?

Thanks,
Kanchan

 

[John_H]

"kb33" <kanchan.devarakonda@gmail.com> wrote in message
news:1130781356.785199.276240@g44g2000cwa.googlegroups.com...

Hi,

Is there a command to measure instantaneous time in Verilog that is
also synthesizable?

Thanks,
Kanchan

Does your ASIC or FPGA have a precision timebase as part of the silicon?
Perhaps direct access to GPS or Loran-C?

You cannot get synthesizable absolute time or relative time without building
the functionality yourself based on an external timebase. Most designs are
clocked by a reasonably stable external clock though 100 ppm accuracy
oscillators won't give you the long-time precision many would want in a
wrist watch.