Microchip FPGA: Regarding the On-chip 25/50 MHz RC Oscillator setting of the Chip Oscillators IP, which is 25MHz or 50MHz for IGLOO2?
It will be 50MHz.
Reference:
The following is stated in the "IGLOO2/SmartFusion2 Clock Conditioning Circuit with PLL Configuration Clock Frequency Requirements" section.
Quote: "・The On-chip 25/50MHZ Oscillator clock frequency is fixed to 50 MHz when the core voltage is 1.2V and 25 MHz when the core voltage is 1.0V and cannot be changed."
https://coredocs.s3.amazonaws.com/Actel/SgCore/CCC/sf2_ccc_config_ug_1.pdf#page=19
The core voltage of IGLOO2 will be 1.2V.
The core voltage can be found in the "Operating Voltage and I/Os" section of the IGLOO 2 FPGA Product Brief.
Quote "・1.2V core voltage"
https://www.microchip.com/content/dam/mchp/documents/FPGA/ProductDocuments/ProductBrief/PB0121%20IGLOO2%20FPGA%20Product%20Brief.pdf#page=4
(If the link is broken, go to https://www.microchip.com/en-us/products/fpgas-and-plds/fpgas/igloo-2-fpgas and go to the Documentation > Overviews tab to access the IGLOO 2 FPGA Product Brief.)
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