NH82801GBM SL8YB

Manufacturer Part NumberNH82801GBM SL8YB
ManufacturerIntel Corporation
NH82801GBM SL8YB datasheet
 


Specifications of NH82801GBM SL8YB

CaseBGADate_code07+
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LAN Controller Registers (B1:D8:F0) (Desktop and Mobile Only)
8.2.14
Statistical Counters (LAN Controller—B1:D8:F0)
The ICH7’s integrated LAN controller provides information for network management
statistics by providing on-chip statistical counters that count a variety of events
associated with both transmit and receive. The counters are updated by the LAN
controller when it completes the processing of a frame (that is, when it has completed
transmitting a frame on the link or when it has completed receiving a frame). The
Statistical Counters are reported to the software on demand by issuing the Dump
Statistical Counters command or Dump and Reset Statistical Counters command in the
SCB Command Unit Command (CUC) field.
Table 8-6.
Statistical Counters (Sheet 1 of 2)
ID
Counter
Transmit Good
0
Frames
Transmit Maximum
4
Collisions (MAXCOL)
Errors
Transmit Late
8
Collisions
(LATECOL) Errors
Transmit Underrun
12
Errors
Transmit Lost
16
Carrier Sense (CRS)
20
Transmit Deferred
Transmit Single
24
Collisions
Transmit Multiple
28
Collisions
Transmit Total
32
Collisions
Receive Good
36
Frames
40
Receive CRC Errors
®
Intel
ICH7 Family Datasheet
Description
This counter contains the number of frames that were
transmitted properly on the link. It is updated only after the
actual transmission on the link is completed, not when the frame
was read from memory as is done for the Transmit Command
Block status.
This counter contains the number of frames that were not
transmitted because they encountered the configured maximum
number of collisions.
This counter contains the number of frames that were not
transmitted since they encountered a collision later than the
configured slot time.
A transmit underrun occurs because the system bus cannot keep
up with the transmission. This counter contains the number of
frames that were either not transmitted or retransmitted due to a
transmit DMA underrun. If the LAN controller is configured to
retransmit on underrun, this counter may be updated multiple
times for a single frame.
This counter contains the number of frames that were
transmitted by the LAN controller despite the fact that it detected
the de-assertion of CRS during the transmission.
This counter contains the number of frames that were deferred
before transmission due to activity on the link.
This counter contains the number of transmitted frames that
encountered one collision.
This counter contains the number of transmitted frames that
encountered more than one collision.
This counter contains the total number of collisions that were
encountered while attempting to transmit. This count includes
late collisions and frames that encountered MAXCOL.
This counter contains the number of frames that were received
properly from the link. It is updated only after the actual
reception from the link is completed and all the data bytes are
stored in memory.
This counter contains the number of aligned frames discarded
because of a CRC error. This counter is updated, if needed,
regardless of the Receive Unit state. The Receive CRC Errors
counter is mutually exclusive of the Receive Alignment Errors
and Receive Short Frame Errors counters.
327

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