When accessing the ETH_RX_DATA register, why does the CPU interface of the CPRI MegaCore function stop resopnding? - When accessing the ETH_RX_DATA register, why does the CPU interface of the CPRI MegaCore function stop resopnding?
Description When the ETH_RX_DATA register is accessed on the CPU interface, the CPRI MegaCore® function waits until a frame of Ethernet data is received on the Fast C & M interface. If you have not setup the Fast C & M interface or the link partner is not transmitting, then the CPU interface waits indefinitely and the cpu_waitrequest signal remains asserted. Altera® recommends that you read the CPRI_CM_STATUS register to ensure that an RX Fast C & M channel has been initialized as indicated by the rx_fast_dm_ptr_valid bit prior to accessing the Ethernet Registers.
Custom Fields values:
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Troubleshooting
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['Arria® V FPGAs and SoCs', 'Cyclone® V FPGAs and SoCs', 'Stratix® V FPGAs']
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['novalue'] - 2021-08-25
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