SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
A DQS error results from a mismatch between the expected number of read DQS pulses and the actual number of read DQS pulses. Counters exist at DDR PHY level to track the number of DQS errors in each data slice. Counter information can be obtained by reading the following fields:
The DQS error signals from each data slice are accumulated at PHY level and can be used to generate a dfi_error signal. Bit 2 of the DDRSS_PHY_1361[26-24] PHY_ERR_MASK_EN field is used to mask the DQS error from generating a dfi_error or being reported on dfi_error_ info[2].