Does anyone know if there is a particular power-up sequence for the BF527? By this I mean a particular order in which the various supplies must be turned on? I can't find anything in the datasheet.
Although Blackfin processors have no power-up sequencing requirements, a silicon anomaly on existing ADSP-BF527 silicon revisions (0.0, 0.1 and 0.2) may lead to PLL issues when VDDINT is powered before VDDEXT. This very same issue is discussed in more detail in the following thread: http://ez.analog.com/message/1767#1767
Please refer to the ADSP-BF523/BF525/BF527(C) Blackfin Anomaly List for Revisions 0.0, 0.1, 0.2 (Rev I, 05-23-2011) for more details.