Article ID: 000075994 Content Type: Error Messages Last Reviewed: 09/11/2012

Warning: No exact pin location assignment(s) for X pins of Y total pins Info: Pin termination_blk0~_rup not assigned to an exact location on the device Info: Pin termination_blk0~_rdn not assigned to an exact location on the device



When using calibrated On Chip Termination (OCT) in Stratix® II and Stratix II GX devices, you will receive this warning when using Quartus® II software version 6.1 and above. 

Stratix III devices have a different OCT calibration circuit than Stratix II devices and were first supported in Quartus II software version 6.1.  In Stratix III devices, I/O pins can use different OCT calibration blocks and must be assigned appropriately. 

Stratix II devices have two OCT calibration blocks, one for the top I/O banks and one for the bottom I/O banks.  The Quartus II software will automatically use the correct OCT calibration blocks for Stratix II devices. 

These warnings can be safely ignored for Stratix II designs. 

Related Products

This article applies to 2 products

Stratix® II FPGAs
Stratix® II GX FPGA



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