SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
The data received and transmitted over MII conforms with the frame structure shown in Table 6-442.
Inter-frame | Preamble | Start of Frame Delimiter (SFD) | Data | Cyclic Redundancy Check (CRC) |
The data following the SFD is formatted in a 4-bit nibble structure. Figure 6-238 illustrates the nibble order. The MSB arriving first is on the LSB side of a nibble. When receiving data, the MII_G_RT receive logic will wait for the next nibble to arrive before constructing a byte and delivering to the PRU.