KSZ8841-16 Micrel Semiconductor, KSZ8841-16 Datasheet - Page 78

• Manufacturer Part Number: KSZ8841-16
• Description: Single-port Ethernet Mac Controller With Non-pci Interface
• Manufacturer: Micrel Semiconductor

MIB (Management Information Base) Counters
The KSZ8841M provides 32 MIB counters to monitor the por
formatted as shown below.
Ethernet port MIB counters are read using indirect memory access. The address offset range is 0x00 to 0x1F.
November 2005
Micrel Confidential
Of
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
0xB
0xC
0xD
0xE
0xF
0x10
0x11
0x12
fset
Bit
31
30
29-
0
Counter
RxLoPriorityByte
Reserved
RxUnde
RxFragments
RxOversize
RxJabbe
RxSymbolError
RxCRCError
RxAlignmentError
RxControl8808Pkts
RxPausePkts
RxBroadcast
RxMultic
RxUnicast
Rx64Octets
Rx65to127Octets
Rx128to255Octet
Rx256to511Octets
Rx512to1023Octets
Name
Overflow
Count valid
Coun
rsizeP
ter va
ast
rs
Nam
lues
e
kt
s
R/W
RO
RO
RO
Description
Rx
Reserv
R
Rx
Rx over
Rx packets longer than
errors
Rx packets w/ invalid data symbol and legal packet size.
Rx packets within (64,1916) bytes w/ an integral number of bytes and a bad CRC
Rx packets within (64,1916) bytes w
Number of MAC control frames received by
Number of PAUSE frames rec
(88-08h), DA, control opcode
Rx good broadcast packets (not i
packets)
Rx good 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
Total Rx packets (bad packets inclu
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
x undersize packets w/ good CRC
Description
1 = counter o
0 = no
1 = cou
0 = 0 cou
C
lo-priority (default) octet count including bad packets
fragment packets w/ bad CRC, symbol errors or alignment errors
Table 11. Format of MIB Counte rs
ounter value (read clear)
ed.
size packets w/ good CRC (max: 1536 bytes)
counter overflow.
nter value is valid.
nter value is not valid.
78
verflow.
1536 bytes w/ either CRC errors, alignment errors, or symbol
t activity for network management. The MIB counters are
not including M
(00-01), data length (64B min), and a valid CRC
eived by a port. PAUSE frame is qualified with EtherType
ncluding error broadcast packets or valid multicast
ded) that are between 128 and 255 octets in length
/ a non-integral number of bytes and a bad CRC
AC control frames, er
a port with 88-08h in EtherType field
are between 65 and 127 octets in length
Default
0
0
0x00000
KSZ8841-16/32 MQL/MVL
000
ror multicast packets
Rev 1.3