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Ethernet Module
Pad operation table
This table provides a description of the pad function based on the configuration of
the AUTOP field.
D02 R/W HUGE 0 Huge frame enable
When this bit is set to 1, frames of any length are
transmitted and received.
D01 R/W FLENC 0 Frame length checking
When set to 1, both transmit and receive frame
lengths are compared to the Length/Type field. If
the Length/Type field represents a length, the
check is performed. Mismatches are reported on
the transmit/receive statistics vector.
D00 R/W FULLD 0 Full duplex
1 The MAC operates in full-duplex mode.
0 The MAC operates in half-duplex mode.
It is recommended that you limit transmit frames to
512 bytes when full-duplex operation is enabled.
Type AUTOP VLANP PADEN Action
Any X X 0 No pad; check CRC.
Any000Pad to 60 bytes; append CRC.
Any X 1 1 Pad to 64 bytes; append CRC.
Any101
If untagged, pad to 60 bytes and
append CRC.
If VLAN-tagged, pad to 64 bytes and
append CRC.
Table 62: PAD operation
Bits Access Mnemonic Reset Description
Table 61: MAC Configuration Register 2 bit definition