Altera 10-Gbps Ethernet MAC MegaCore Function User Manual
Page 170
Appendix D: ToD Synchronizer
D–5
February 2014
Altera Corporation
10-Gbps Ethernet MAC MegaCore Function User Guide
tod_slave_valid
This signal indicates that the tod_data_slave
signal is valid and ready to be loaded into the slave
ToD clock in the following cycle.
This signal will only be high for 1 cycle, every time
a new ToD is successfully synchronized to the
slave clock domain.
tod_slave_data[n-1:0]
Input
1
This signal carries the 64-bit or 96-bit format
synchronized ToD that is ready to be loaded into
the slave clock domain. The width of this signal is
determined by the TOD_MODE parameter.
The synchronized ToD will be 1 slave clock period
bigger than the master ToD because it takes 1
slave clock cycle to load this data into the slave
ToD.
Table D–3. Interface Signals for the ToD Synchronizer (Part 2 of 2)
Signal
Direction
Width
Description