Why is the Maximum Fan-Out assignment ignored? - Why is the Maximum Fan-Out assignment ignored? Description Due to a problem in the Quartus® II software version 13.0 SP1 and earlier, you may see this warning if the Maximum Fan-Out assignment is applied to a register that drives an input of block RAM and the maximum block depth has been set. Resolution To work around this issue, perform one of the following options: Manually split the RAM into smaller blocks and duplicate the registers feeding the RAM inputs Do not set the maximum block depth This problem is scheduled to be fixed in a future release of the Quartus II software. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 12.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']