Quartus II Settings File Reference Manual - Altera

Chapter 6: Fitter Assignments 6–161
GXB_0PPM_CORE_CLOCK
GXB_0PPM_CORE_CLOCK
Type
Specifies two GXB core clocks that have zero (0) PPM difference. The core clock driver
for the assignment source GXB must have a difference of 0 PPM compared with the
core clock of the assignment destination GXB. Do not reconfigure the GXB 0 PPM
clock group driver differently from other clocks it is 0 PPM-linked to and do not bring
down the GXB 0 PPM clock source when the destination GXB receiver or transmitter
is listening to the signal. Follow the Altera High Speed I/O Applications Technical
Support recommendations when using this assignment.
Boolean
Device Support
This setting can be used in projects targeting the following device families:
■ Arria II GX
■ Arria II GZ
■ Cyclone IV GX
■ HardCopy IV
■ Stratix IV
Notes
This assignment supports wildcards.
Syntax
set_instance_assignment -name GXB_0PPM_CORE_CLOCK -from -to -
entity
June 2012 Altera Corporation Quartus Settings File
Reference Manual