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Qsf assignments – Altera OCT User Manual

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Table 3: Termination Interface Signals

Description

Direction

Signal Name

16 bit input port. Receives impedance calibration code for
output termination. Source can only be
seriesterminationcontrol

port from the Altera

OCT megafunction.

Input

seriesterminationcontrol

16 bit input port. Receives impedance calibration code for
input termination. Source can only be
parallelterminationcontrol

port from the

Altera OCT megafunction.

Input

parallelterminationcontrol

QSF Assignments

Arria 10 devices has the following termination related Quartus II Settings File (.qsf) assignments:

• INPUT_TERMINATION
• OUTPUT_TERMINATION
• TERMINATION_CONTROL_BLOCK
• RZQ_GROUP

The following table lists the details of each assignment:

Table 4: QSF Assignments

Details

QSF Assignment

The input/output termination assignment specifies
the termination value in ohm on the pin in
question.

Example

set_instance_assignment -name

INPUT_TERMINATION -to

set_instance_assignment -name

OUTPUT_TERMINATION -to

INPUT_TERMINATION

OUTPUT_TERMINATION

Altera Corporation

Altera OCT Megafunction User Guide

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QSF Assignments

ug-altera_oct
2013.11.29