SMSC LAN9311 User Manual
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
327
Revision 1.4 (08-19-08)
DATASHEET
14.5.2.4
Port x MAC Receive 64 Byte Count Register (MAC_RX_64_CNT_x)
This register provides a counter of 64 byte packets received by the port. The counter is cleared upon
being read.
being read.
Note:
A bad packet is defined as a packet that has an FCS or Symbol error. For this counter, a packet
that is not an integral number of bytes is rounded down to the nearest byte.
that is not an integral number of bytes is rounded down to the nearest byte.
Register #:
Port0: 0411h
Size:
32 bits
Port1: 0811h
Port2: 0C11h
Port2: 0C11h
BITS
DESCRIPTION
TYPE
DEFAULT
31:0
RX 64 Bytes
Count of packets (including bad packets) that have exactly 64 bytes.
Count of packets (including bad packets) that have exactly 64 bytes.
Note:
This counter will stop at its maximum value of FFFF_FFFFh.
Minimum rollover time at 100Mbps is approximately 481 hours.
Minimum rollover time at 100Mbps is approximately 481 hours.
RC
00000000h