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348 Software Developer’s Manual
Register Descriptions
13.7.15 Receive Length Error Count
RLEC (04040h; R)
This register counts receive length error events. A length error occurs if an incoming packet passes
the filter criteria but is undersized or oversized. Packets less than 64 bytes are undersized. Packets
over 1522 bytes are oversized if LongPacketEnable is 0b (RCTL.LPE). If LongPacketEnable
(LPE) is 1b, then an incoming packet is considered oversized if it exceeds 16384 bytes.
If receives are not enabled, this register does not increment. These lengths are based on bytes in
the received packet from <Destination Address> through <CRC>, inclusively.
Table 13-107. RLEC Register Bit Description
13.7.16 XON Received Count
XONRXC (04048h; R)
This register counts the number of valid XON packets received. XON packets can use the global
address, or the station address. This register only increments if receives are enabled.
Table 13-108. XONRXC Register Bit Description
31 0
RLEC
Field Bit(s)
Initial
Value
Description
RLEC 31:0 0b Number of packets with receive length errors.
31 0
XONRXC
Field Bit(s)
Initial
Value
Description
XONRXC 31:0 0b Number of XON packets received.