KSZ8873MLLI Micrel Inc, KSZ8873MLLI Datasheet - Page 85

• Manufacturer Part Number: KSZ8873MLLI
• Description: IC ETHERNET SWITCH 3PORT 64LQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8873MLLI

• Controller Type: Ethernet Switch Controller
• Interface: MII
• Voltage - Supply: 1.8V, 2.5V, 3.3V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: *
• Package / Case: *
• Number Of Primary Switch Ports: 3
• Internal Memory Buffer Size: 32
• Fiber Support: No
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII
• Power Supply Type: Analog
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Mounting: Surface Mount
• Jtag Support: No
• Operating Supply Voltage (max): 1.89/3.465V
• Operating Temperature Classification: Industrial
• Data Rate: 100Mbps
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant

Micrel, Inc.
MIB (Management Information Base) Counters
The KSZ8873 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.
September 2009
Offset
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
0xB
0xC
0xD
0xE
0xF
0x10
0x11
0x12
0x13
0x14
0x15
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)
RxHiPriorityByte
RxUndersizePkt
RxOversize
RxJabbers
RxCRCError
RxAlignmentError
RxMulticast
TxLoPriorityByte
TxHiPriorityByte
Counter Name
RxLoPriorityByte
RxFragments
RxSymbolError
RxControl8808Pkts
RxPausePkts
RxBroadcast
RxUnicast
Rx64Octets
Rx65to127Octets
Rx128to255Octets
Rx256to511Octets
Rx512to1023Octets
Rx1024to1522Octets
Name
Overflow
Count valid
Counter values
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
Total Rx packets (bad packets included) that are between 256 and 511 octets in length
Total Rx packets (bad packets included) that are between 512 and 1023 octets in length
Total Rx packets (bad packets included) that are between 1024 and 1522 octets in
length (upper limit depends on max packet size setting)
Tx lo-priority good octet count, including PAUSE packets
Tx hi-priority good octet count, including PAUSE packets
R/W
RO
RO
RO
Table 18. Format of “Per Port” MIB Counters
Description
= 1, counter overflow
= 0, no counter overflow
= 1, counter value is valid
= 0, counter value is not valid
Counter value
85
Default
0
0
0
KSZ8873MLL/FLL/RLL
M9999-092309-1.2