This register counts the frames that are not an integral number of
bytes long and have bad CRC when their length is truncated to an integral number of
bytes and are between 64 and 1518 bytes in length (1536 if bit 8 is set in Network
Configuration Register, 10240
bytes if bit 3 is set in the Network Configuration Register). This register
is also incremented if a symbol error is detected and the frame is of valid length
and does not have an integral number of bytes. See GMAC Network Configuration
Register.