KSZ8893-MQL Micrel Semiconductor, Inc., KSZ8893-MQL Datasheet - Page 89

• Manufacturer Part Number: KSZ8893-MQL
• Description: Integrated 3-Port 10/100 Managed Switch with PHYs
• Manufacturer: Micrel Semiconductor, Inc.

MIB (Management Information Base) Counters
The KSZ8893MQL provides 34 MIB counters per port. These counters are used to monitor the port activity for
network management. The MIB counters have two format groups: “Per Port” and “All Port Dropped Packet.”
“Per Port” MIB counters are read using indirect memory access. The base address offsets and address ranges for
all three ports are:
Port 1 MIB counters are read using the indirect memory offsets in the following table.
Offset
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
0xB
0xC
0xD
0xE
0xF
0x10
Micrel
November 2005
Bit
31
30
29-0
Port 1, base is 0x00 and range is (0x00-0x1f)
Port 2, base is 0x20 and range is (0x20-0x3f)
Port 3, base is 0x40 and range is (0x40-0x5f)
Counter Name
RxLoPriorityByte
RxHiPriorityByte
RxUndersizePkt
RxFragments
RxOversize
RxJabbers
RxSymbolError
RxCRCError
RxAlignmentError
RxControl8808Pkts
RxPausePkts
RxBroadcast
RxMulticast
RxUnicast
Rx64Octets
Rx65to127Octets
Rx128to255Octets
Name
Overflow
Count valid
Counter values
Table 19. Format of “Per Port” MIB Counters
R/W
RO
RO
RO
Description
Rx lo-priority (default) octet count including bad packets
Rx hi-priority octet count including bad packets
Rx undersize packets w/ good CRC
Rx fragment packets w/ bad CRC, symbol errors or alignment errors
Rx oversize packets w/ good CRC (max: 1536 or 1522 bytes)
Rx packets longer than 1522 bytes w/ either CRC errors, alignment errors, or
symbol errors (depends on max packet size setting)
Rx packets w/ invalid data symbol and legal packet size.
Rx packets within (64,1522) bytes w/ an integral number of bytes and a bad CRC
(upper limit depends on max packet size setting)
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)
Number of MAC control frames received by a port with 88-08h in EtherType field
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
Rx good broadcast packets (not including error broadcast packets or valid multicast
packets)
Rx good multicast packets (not including MAC control frames, error multicast
packets or valid broadcast packets)
Rx good unicast packets
Total Rx packets (bad packets included) that were 64 octets in length
Total Rx packets (bad packets included) that are between 65 and 127 octets in
length
Total Rx packets (bad packets included) that are between 128 and 255 octets in
length
Description
= 1, counter overflow
= 0, no counter overflow
= 1, counter value is valid
= 0, counter value is not valid
Counter value
89
Default
0
0
0
KSZ8893MQL/MQLI
M9999-111705