Specifications

Micrel, Inc.
KSZ8895MQ/RQ/FMQ
MIB (Management Information Base) Counters
The MIB counters are provided on per port basis. These counters are read using indirect memory access as below:
For Port 1
Offset Counter Name Description
0x0 RxLoPriorityByte Rx lo-priority (default) octet count including bad packets.
0x1 RxHiPriorityByte Rx hi-priority octet count including bad packets.
0x2 RxUndersizePkt Rx undersize packets w/good CRC.
0x3 RxFragments Rx fragment packets w/bad CRC, symbol errors or alignment errors.
0x4 RxOversize Rx oversize packets w/good CRC (max: 1536 or 1522 bytes).
0x5 RxJabbers
Rx packets longer than 1522B w/either CRC errors, alignment errors, or symbol errors (depends
on max packet size setting) or Rx packets longer than 1916B only.
0x6 RxSymbolError Rx packets w/ invalid data symbol and legal preamble, packet size.
0x7 RxCRCerror
Rx packets within (64,1522) bytes w/an integral number of bytes and a bad CRC (upper limit
depends on max packet size setting).
0x8 RxAlignmentError
Rx packets within (64,1522) bytes w/a non-integral number of bytes and a bad CRC (upper limit
depends on max packet size setting).
0x9 RxControl8808Pkts The number of MAC control frames received by a port with 88-08h in EtherType field.
0xA RxPausePkts
The number of PAUSE frames received by a port. PAUSE frame is qualified with EtherType (88-
08h), DA, control opcode (00-01), data length (64B min), and a valid CRC.
0xB RxBroadcast Rx good broadcast packets (not including errored broadcast packets or valid multicast packets).
0xC RxMulticast
Rx good multicast packets (not including MAC control frames, errored multicast packets or valid
broadcast packets).
0xD RxUnicast Rx good unicast packets.
0xE Rx64Octets Total Rx packets (bad packets included) that were 64 octets in length.
0xF Rx65to127Octets Total Rx packets (bad packets included) that are between 65 and 127 octets in length.
0x10 Rx128to255Octets Total Rx packets (bad packets included) that are between 128 and 255 octets in length.
0x11 Rx256to511Octets Total Rx packets (bad packets included) that are between 256 and 511 octets in length.
0x12 Rx512to1023Octets Total Rx packets (bad packets included) that are between 512 and 1023 octets in length.
0x13 Rx1024to1522Octets
Total Rx packets (bad packets included) that are between 1024 and 1522 octets in length (upper
limit depends on max packet size setting).
0x14 TxLoPriorityByte Tx lo-priority good octet count, including PAUSE packets.
0x15 TxHiPriorityByte Tx hi-priority good octet count, including PAUSE packets.
0x16 TxLateCollision The number of times a collision is detected later than 512 bit-times into the Tx of a packet.
0x17 TxPausePkts The number of PAUSE frames transmitted by a port.
0x18 TxBroadcastPkts Tx good broadcast packets (not including errored broadcast or valid multicast packets).
0x19 TxMulticastPkts Tx good multicast packets (not including errored multicast packets or valid broadcast packets).
0x1A TxUnicastPkts Tx good unicast packets.
0x1B TxDeferred Tx packets by a port for which the 1
st
Tx attempt is delayed due to the busy medium.
0x1C TxTotalCollision Tx total collision, half-duplex only.
0x1D TxExcessiveCollision A count of frames for which Tx fails due to excessive collisions.
0x1E TxSingleCollision Successfully Tx frames on a port for which Tx is inhibited by exactly one collision.
0x1F TxMultipleCollision Successfully Tx frames on a port for which Tx is inhibited by more than one collision.
Table 19. Port1 MIB Counter Indirect Memory Offerts
March 12, 2014
97
Revision 1.7