SMSC LAN9312 - Manual (Page 353)

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312 353 Revision 1.4 (08-19-08)
DATASHEET
14.5.2.32 Port x MAC Transmit 512 to 1023 Byte Count Register (MAC_TX_512_TO_1023_CNT_x)
This register provides a counter of transmitted packets between the size of 512 to 1023 bytes. The
counter is cleared upon being read.
Register #: Port0: 0458h Size: 32 bits
Port1: 0858h
Port2: 0C58h
BITS DESCRIPTION TYPE DEFAULT
31:0 TX 512 to 1023 Bytes
Count of packets that have between 512 and 1023 bytes.
Note: This counter will stop at its maximum value of FFFF_FFFFh.
Minimum rollover time at 100Mbps is approximately 3047 hours.
RC 00000000h