Visible to Intel only — GUID: QSF-SYNCHRONIZATION_REGISTER_CHAIN_LENGTH
Ixiasoft
Visible to Intel only — GUID: QSF-SYNCHRONIZATION_REGISTER_CHAIN_LENGTH
Ixiasoft
SYNCHRONIZATION_REGISTER_CHAIN_LENGTH
This setting specifies the maximum number of registers in a row to be considered as a synchronization chain. Synchronization chains are sequences of registers with the same clock, no fanout in between, such that the first register is fed by a pin, or by logic in another clock domain. These registers will be considered for metastability analysis (available for some families), and are also protected from optimizations such as retiming. When gate-level retiming is turned on, these registers will not be moved. The default length is device-specific.
Old Name
ADV_NETLIST_OPT_METASTABLE_REGS
Type
Integer
Device Support
- Agilex 7
- Intel® Arria® 10
- Intel® Cyclone® 10 GX
- Intel® Stratix® 10
Notes
This assignment is included in the Analysis & Synthesis report.
This assignment supports synthesis wildcards.
Syntax
set_global_assignment -name SYNCHRONIZATION_REGISTER_CHAIN_LENGTH <value>
set_global_assignment -name SYNCHRONIZATION_REGISTER_CHAIN_LENGTH -entity <entity name> <value>
set_instance_assignment -name SYNCHRONIZATION_REGISTER_CHAIN_LENGTH -to <to> -entity <entity name> <value>