SMSC LAN9312 - Manual (Page 363)

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312 363 Revision 1.4 (08-19-08)
DATASHEET
14.5.2.42 Port x MAC Transmit Total Collision Count Register (MAC_TX_TOTALCOL_CNT_x)
This register provides a counter of total collisions including late collisions. The counter is cleared upon
being read.
Register #: Port0: 0463h Size: 32 bits
Port1: 0863h
Port2: 0C63h
BITS DESCRIPTION TYPE DEFAULT
31:0 TX Total Collision
Total count of collisions including late collisions. This counter is incremented
only in half-duplex operation.
Note: This counter will stop at its maximum value of FFFF_FFFFh.
Minimum rollover time at 100Mbps is approximately 92 hours.
RC 00000000h