junction temperature excedded

[hulk789]

How to rectify such errors

[austin · Accepted solution]

1.  Reduce your clock rate for core, IO, etc. as much as possible

2.  Optimize your design (remove anything you do not absolutely require)

3.  Operate with a better heatsink (more airflow, lower ambient temperature)

4.  Use an Industrial temperature range device (100C max) instead of a commercial grade device (85C max)

5.  Split the design into two smaller devices

Use the power estimator spreadsheet to evaluate your choices quickly.

Note that accuracy in estimates is +/-20%.  After place and route, thge estimate is more accurate when reported by the tools.  If you do not have the design placed and routed, do so, and see by how much the power varies from this estimate (note confidence is 'low' implying it has not finished optimizing the design).

Optimizing the design for area may improve power as well -- check what strategies you have chosen.

[drjohnsmith]

oouch, thats a fair amount of power,

gated clocks , so as Austin says your only clocking the parts you want when you want,

and a damed big heat sink,  with some air floww , 1.1 deg c per watt is not that good a design,

[muzaffer]

infer more dsp48s and distributed memory or block ram even for small sized memories. clock gating as suggested and optimize your placement so wide busses don't travel far.