LAN9313 Datasheet, PDF (271/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
13.3.2.4 Port x MAC Receive 64 Byte Count Register (MAC_RX_64_CNT_x)
Register #:
Port0: 0411h
Port1: 0811h
Port2: 0C11h
Size:
32 bits
This register provides a counter of 64 byte packets received by the port. The counter is cleared upon
being read.
BITS
DESCRIPTION
31:0 RX 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.
TYPE
RC
DEFAULT
00000000h
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.
SMSC LAN9313/LAN9313i
271
DATASHEET
Revision 1.2 (04-08-08)