Device Family: Intel® MAX® 10

Type: Answers

Area: EMIF, Intellectual Property


IP Product: DDR3 SDRAM Controller MegaCore supporting UniPHY

Error (165011): altmemphy pin placement was unsuccessful

Description

When you implement the DDR3 SDRAM Controller with UniPHY in a MAX® 10 device and add pin location assignments to the DQSn pins in the QSF file, you may get following fitter error.

Error (165011): altmemphy pin placement was unsuccessful

Error (13130): The assigned location PIN <pin_number> for DQSn pin mem_dqs_n[*] is not a legal location

As DQSn is a pseudo differential pin of DQS, a pin location assignment for DQSn is not needed. The pin location  assignment on the DQS pin is sufficient.

Workaround/Fix

To work around this error, remove the pin location assignment for the DQSn pins in the Assignment Editor or the QSF file.