Why do reads from my Altera® PLL Reconfig megafunction fail? - Why do reads from my Altera® PLL Reconfig megafunction fail? Description When reads are performed from the Avalon®-MM slave port on the Altera® PLL Reconfig megafunction, the mgmt_waitrequest is not asserted correctly as specified in the Avalon Interface Specification (PDF) , which will lead to the Avalon-MM master reading the incorrect data. Resolution A patch for Quartus® II 12.0sp2, 2.dp9d may be downloaded from the link below. This patch must be installed after installing the dp9 patch available from the related solution "How do I address known software issues for Stratix® V, Arria® V, and Cyclone® V devices in the Quartus® II software version 12.0sp2?" This problem is fixed in a 12.1sp1 version of the Quartus®II software, and the device patches to 12.0sp2. Quartus II 12.0sp2 Patch 2.dp9d for Windows Quartus II 12.0sp2 Patch 2.dp9d for Linux Quartus II 12.0sp2 Patch 2.dp9d Readme file Related Articles How do I address known software issues for Stratix V, Arria V and Cyclone V devices in the Quartus II software version 12.0 SP2? Custom Fields values: ['novalue'] Troubleshooting 2205791042 False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 12.1 11.0 ['Arria® V GT FPGA', 'Arria® V GX FPGA', 'Arria® V GZ FPGA', 'Arria® V ST FPGA', 'Arria® V SX FPGA', 'Cyclone® V E FPGA', 'Cyclone® V GT FPGA', 'Cyclone® V GX FPGA', 'Cyclone® V SE FPGA', 'Cyclone® V ST FPGA', 'Cyclone® V SX FPGA', 'Stratix® V E FPGA', 'Stratix® V GS FPGA', 'Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']