Intel® Arria® 10 Hard Processor System Technical Reference Manual

ID 683711
Date 1/10/2023
Public

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12.4.4.1. Watchdog Timer

To prevent stalled indirect memory accesses, each ECC controller has a watchdog timer.

For example, if the clock to the memory block is stopped, the watchdog timer can assert an interrupt indicating that memory failed to respond within the expected interval. The watchdog timer is in a separate clock domain from the memory, enabling it to continue running independently of any problem with the memory clock.

The watchdog timer can be enabled or disabled in the ECC Watchdog Control (ECC_wdcrtl) register. The watchdog timeout is 2048 clock cycles of the clock domain that is connected to the ECC control slave port. The watchdog timeout interval is not software-programmable.