The RapidIO parameter editor offers the following unsupported input clock frequencies for RapidIO MegaCore functions that target a Cyclone IV GX device:
- 78.125 MHz at data rate 1.250 Gbaud
- 78.125 MHz and 500 MHz at data rate 2.500 Gbaud
- 78.125 MHz, 97.65625 MHz, 195.3125 MHz, and 390.625 MHz at data rate 3.125 Gbaud
If you select one of these input clock frequencies, the closest supported input clock frequency is implemented in the RapidIO MegaCore function variation.
This issue affects all RapidIO variations that target a Cyclone IV GX device.
The transceiver block in the RapidIO variation is configured with a different input clock frequency than the frequency you specified.
Avoid selecting an unsupported input clock frequency in the RapidIO parameter editor.
This issue is fixed in version 10.0 SP1 of the RapidIO MegaCore function.