Datasheet - Intel IXF1104 Datasheet

Table 94. MAC TX Statistics ($ Port_Index +0x40 – +0x58) (Sheet 3 of 4)
Name
TxSingleCollisions
TxMultipleCollisions
TxLateCollisions
TxExcessiveCollisionErrors
TxExcessiveDeferralErrors
TxExcessiveLengthDrop
TxUnderrun
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write

Datasheet

Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005
®
Intel IXF1104 4-Port Gigabit Ethernet Media Access Controller
Description
A count of successfully transmitted
frames on a particular interface where
the transmission is inhibited by exactly
one collision. A frame that is counted
by an instance of this object is also
counted by the corresponding instance
of either the UnicastPkts,
MulticastPkts, or BroadcastPkts, and is
not counted by the corresponding
instance of the MultipleCollisionFrames
object.
NOTE: NA - half-duplex only
A count of successfully transmitted
frames on a particular interface for
which transmission is inhibited by more
than one collision. A frame that is
counted by an instance of this object is
also counted by the corresponding
instance of either the UnicastPkts,
MulticastPkts, or BroadcastPkts, and is
not counted by the corresponding
instance of the SingleCollisionFrames
object.
NOTE: NA - half-duplex only
The number of times a collision is
detected on a particular interface later
than 512 bit-times into the transmission
of a packet. Such frame are terminated
and discarded.
NOTE: NA - half-duplex only
A count of frames, which collides 16
times and is then discarded by the
MAC. Not effecting xMultipleCollisions
NOTE: NA - half-duplex only
Number of times frame transmission is
postponed more than 2*MaxFrameSize
because of another frame already
being transmitted on the Ethernet
network. This causes the MAC to
discard the frame.
NOTE: NA - half-duplex only
Frame transmissions aborted by the
MAC because the frame is longer than
maximum frame size. These frames
are truncated by the MAC when the
maximum frame size violation is
detected by the MAC.
Internal TX error that causes the MAC
to end the transmission before the end
of the frame because the MAC did not
get the needed data in time for
transmission. The frames are lost and
a fragment or a CRC error is
transmitted.
1
Address Type Default
Port_Index +
R 0x00000000
0x4E
Port_Index +
R 0x00000000
0x4F
Port_Index +
R 0x00000000
0x50
Port_Index +
R 0x00000000
0x51
Port_Index +
R 0x00000000
0x52
Port_Index +
R 0x00000000
0x53
Port_Index +
R 0x00000000
0x54
180