LAN9353 Datasheet, PDF (283/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
10.7.2.44 Port x MAC Transmit Single Collision Count Register (MAC_TX_SNGLECOL_CNT_x)
Register #:
Port0: 0461h
Port1: 0861h
Port2: 0C61h
Size:
32 bits
This register provides a counter of transmitted packets which experienced exactly 1 collision. The counter is cleared
upon being read.
Bits
Description
31:0 TX Single Collision
Count of transmitted packets that experienced exactly 1 collision. 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 100 Mbps is approximately 573 hours.
Type
RC
Default
00000000h
10.7.2.45 Port x MAC Transmit Multiple Collision Count Register (MAC_TX_MULTICOL_CNT_x)
Register #:
Port0: 0462h
Port1: 0862h
Port2: 0C62h
Size:
32 bits
This register provides a counter of transmitted packets which experienced between 2 and 15 collisions. The counter is
cleared upon being read.
Bits
Description
31:0 TX Multiple Collision
Count of transmitted packets that experienced between 2 and 15 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 100 Mbps is approximately 664 hours.
Type
RC
Default
00000000h
10.7.2.46 Port x MAC Transmit Total Collision Count Register (MAC_TX_TOTALCOL_CNT_x)
Register #:
Port0: 0463h
Port1: 0863h
Port2: 0C63h
Size:
32 bits
This register provides a counter of total collisions including late collisions. The counter is cleared upon being read.
Bits
Description
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 100 Mbps is approximately 92 hours.
Type
RC
Default
00000000h
 2015 Microchip Technology Inc.
DS00001925A-page 283