SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
In normal operation, the Ethernet port modules are configured drop received packages that contain errors (runt, frag, oversize, jabber, crc, alignment, code etc.). However, when the CPSW_PN_MAC_CONTROL_REG_k configuration bit(s) RX_CEF_EN, RX_CSF_EN, or RX_CMF_EN are set, received Ethernet packages with errors are transferred to the host. When the ALE receives a packet that contains errors (due to a set header error bit), or a MAC control frame and does not receive an abort, the packet will be forwarded only to the host port (port 0). Packets with errors that are forwarded to the host have no VLAN untagging or drop due to rate limiting. No ALE learning occurs on packets with errors or mac control frames. Learning is based on source address and lookup is based on destination address. Directed packets from the host are not learned, updated, or touched.