SMSC LAN9312 - Manual (Page 360)

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
Revision 1.4 (08-19-08) 360 SMSC LAN9312
DATASHEET
14.5.2.39 Port x MAC Transmit Excessive Collision Count Register (MAC_TX_EXCCOL_CNT_x)
This register provides a counter of transmitted packets which experienced 16 collisions. The counter
is cleared upon being read.
Register #: Port0: 0460h Size: 32 bits
Port1: 0860h
Port2: 0C60h
BITS DESCRIPTION TYPE DEFAULT
31:0 TX Excessive Collision
Count of transmitted packets that experienced 16 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 1466 hours.
RC 00000000h