DP83821 datasheet(18/86 Pages) NSC

18 / 86 page

3.0 Functional Description (Continued)

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RXFCSErrors

RFC 1643,

802.3 LM

hardware, see

MIB:RXFCSErrors.

This counter is incremented for each packet

received with a Frame Check Sequence

error (bad CRC).

RXMsdPktErrors

RFC 1213, RFC

1643, 802.3 LM

hardware, see

MIB:RXMsdPktErrors.

This counter is incremented for each

receive aborted due to data or status FIFO

overruns (insufficient buffer space).

RXFAEErrors

RFC 1643,

802.3 LM

hardware, see

MIB:RXFAEErrors.

This counter is incremented for each packet

received with a Frame Alignment error.

RXSymbolErrors

802.3 LM

hardware, see

MIB:RXSymbolErrors

This counter is incremented for each packet

received with one or more 100 Mb symbol

errors detected.

RXFrameTooLong

RFC 1643,

802.3 LM

hardware, see

MIB:RXFrameTooLong.

This counter is incremented for each packet

received with greater than the 802.3

standard maximum length of 1518 bytes.

RXIRLErrors

802.3 LM

hardware, see

MIB:RXIRLErrors.

Packets received with In Range Length

errors. This counter increments for packets

received with a MAC length/type value

between 64 and 1518 bytes, inclusive, that

does not match the number of bytes

received. This counter also increments for

packets with a MAC length/type field of less

than 64 bytes and more than 64 bytes

received.

RXBadOpcodes

802.3 LM

hardware, see

MIB:RXBadOpcodes.

Packets received with a valid MAC control

type and an opcode for a function that is not

supported by the device

RXPauseFrames

802.3 LM

hardware, see

MIB:RXPauseFrames.

MAC control Pause frames received.

TXOctetsOK

RFC 1213,

802.3 LM

software, add sum of

cmdsts.SIZE (+4) on transmit

packets with cmdsts.OK bit

set.

The byte count of each successfully

transmitted packet is added to this counter.

The packet byte count includes the

address, type, data, and FCS fields.

TXFramesOK

802.3 LM

software, increment on

transmit packets with

cmdsts.OK bit set.

This counter is incremented for each packet

successfully transmitted. This count

includes broadcast, multicast, and physical

address packets.

TXDeferred

RFC 1643,

802.3 LM

software, increment on

transmit packets with

cmdsts.TD set.

This counter is incremented for each packet

transmission which is deferred due to active

line conditions (once per packet).

TXBroadcastPkts

RFC 1213,

802.3 LM

software, increment on

transmit packets with

cmdsts.OK set, and

destination address set to ff-

ff-ff-ff-ff-ff

This counter is incremented for each

broadcast packet successfully transmitted.

TXMulticastPkts

RFC 1213,

802.3 LM

software, increment on

transmit packets with

cmdsts.OK set, and LSB of

first byte of destination

address set.

This counter is incremented for each

multicast packet successfully transmitted.

TXFrames1Coll

RFC 1643,

802.3 LM

software, increment on

transmit packets with

cmdsts.CCNT == 1 and

cmdsts.OK set.

This counter is incremented for each packet

successfully transmitted with 1 in-window

collision.

TXFramesMultiColl

RFC 1643,

802.3 LM

software, increment on

transmit packets with

cmdsts.CCNT > 1 and

cmdsts.OK set.

This counter is incremented for each packet

successfully transmitted with 2-15 in-

window collisions.

TXPauseFrames

802.3 LM

hardware, see

MIB:TXPauseFrames.

MAC control Pause frames transmitted.

DP83821 Datasheet(PDF) 18 Page - National Semiconductor (TI)

DP83821 Datasheet(HTML) 18 Page - National Semiconductor (TI)

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