Altera Quartus II Settings File - Manual (Page 622)

LVDS_DIRECT_LOOPBACK_MODE
Enable the LVDS Direct Loop Mode on a True Differential output pin. This assignment should only apply
from an input pin to an output pin and both of them should have True Differential I/O standard. When
this feature is enabled, data coming in from the adjacent RX pair gets looped back to the TX pair. This
feature can be used to verify the Tx and Rx buffer by checking the data transmit and received. This option
is ignored if it is applied to anything other than a pin or a top-level design entity.
Type
Boolean
Device Support
This setting can be used in projects targeting any Altera device family.
Notes
This assignment supports Fitter wildcards.
This assignment is included in the Fitter report.
Syntax
set_instance_assignment -name LVDS_DIRECT_LOOPBACK_MODE -from <from> -to
<to> -entity <entity name> <value>
Example
set_instance_assignment -name LVDS_DIRECT_LOOPBACK_MODE ON -from
true_diff_in_pin_p -to true_diff_out_pin_p
See Also
IO_STANDARD
622 LVDS_DIRECT_LOOPBACK_MODE
MNL-Q21005
2015.05.04
Altera Corporation Quartus Settings File Reference Manual
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