SMSC LAN9311 User Manual
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
333
Revision 1.4 (08-19-08)
DATASHEET
14.5.2.10
Port x MAC Receive Oversize Count Register (MAC_RX_OVRSZE_CNT_x)
This register provides a counter of received packets with a size greater than the maximum byte size.
The counter is cleared upon being read.
The counter is cleared upon being read.
Note:
For this counter, a packet with the maximum number of bytes that is not an integral number of
bytes (e.g. a 1518 1/2 byte packet) is not considered oversize.
bytes (e.g. a 1518 1/2 byte packet) is not considered oversize.
Register #:
Port0: 0417h
Size:
32 bits
Port1: 0817h
Port2: 0C17h
Port2: 0C17h
BITS
DESCRIPTION
TYPE
DEFAULT
31:0
RX Oversize
Count of packets that have more than the maximum allowable number of
bytes and a valid FCS. The max number of bytes is 1518 for untagged
packets and 1522 for tagged packets. If Jumbo2K (bit 3) is set in the
Count of packets that have more than the maximum allowable number of
bytes and a valid FCS. The max number of bytes is 1518 for untagged
packets and 1522 for tagged packets. If Jumbo2K (bit 3) is set in the
of bytes is 2048.
Note:
This counter will stop at its maximum value of FFFF_FFFFh.
Minimum rollover time at 100Mbps is approximately 8813 hours.
Minimum rollover time at 100Mbps is approximately 8813 hours.
RC
00000000h