SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
The PCIe subsystem instantiates two ECC Aggregators: AXI_ECC_AGGR and CORE_ECC_AGGR.
AXI_ECC_AGGR is connected to the RAMs in PCIe CBA Clock Domain and CORE_ECC_AGGR is connected to the RAMs in the PIPE Clock Domain.
The ECC Aggregator modules integrated within the PCIe subsystem provide a mechanism to control and monitor the ECC RAMs via Single Error Correction (SEC) and Double Error Detection (DED) functions. Each ECC Aggregator module gathers level pending status from the ECC RAMs into two interrupts to system level. One interrupt is for correactable errors (SEC) and the other one for uncorrectable errors (DED). The ECC Aggregator supports software readable status of ECC single/double-bit errors and associated information such as RAM address and data bit(s) that are in error. Write back correction for async read RAMs is not supported.
For more information on the ECC Aggregator operation, see Section 12.10.4, ECC Aggregator.