SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
LSE integrates a CRC signature capture mechanism on each output channel data to verify the integrity of the HWA’s internal paths. When enabled, every valid pixel data from the CORE is sampled by a CRC module to update the signature for the channel before the data is packed and sent to the SL2 buffer. Note that data used for PSA is raw data from the CORE rather than data written into SL2 with container alignment. For LDC, PSA signature is calculated in the same order as CORE data transfer to LSE which is 3D block order as against frame order. At the end of frame condition, the final signature is saved in a separate read-only signature register (VPAC_LDC_LSE_PSA_SIGNATURE_y y=0..#_of_Output Channel-1) till the next end of frame condition for software to read and compare it against the golden reference signature. The read-only register keeps the last saved value until a reset (set to 0) or is replaced by another frame data signature.