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MPC8280 Datasheet(PDF) 1249 Page - Freescale Semiconductor, Inc |
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MPC8280 Datasheet(HTML) 1249 Page - Freescale Semiconductor, Inc |
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1249 / 1386 page  Fast Ethernet Controller MPC8280 PowerQUICC II Family Reference Manual, Rev. 1 Freescale Semiconductor 36-15 36.12 Ethernet Address Recognition The Ethernet controller can filter the received frames based on different addressing types—physical (individual), group (multicast), broadcast (all-ones group address), and promiscuous. The difference between an individual address and a group address is determined by the I/G bit in the destination address field. Figure 36-5 is a flowchart for address recognition on received frames. etherStatsJabbers The total number of packets received that were longer than 1518 octets (excluding framing bits but including FCS octets) and had either a bad FCS with an integral number of octets (FCS error) or a bad FCS with a non-integral number of octets (alignment error). Note that this definition of jabber is different than the definition in IEEE-802.3 Section 8.2.1.5 (10BASE5) and Section 10.3.1.4 (10BASE2). These documents define jabber as the condition where any packet exceeds 20 ms. The allowed range to detect jabber is between 20 ms and 150 ms. JBRC etherStatsCollisions The best estimate of the total number of collisions on this Ethernet segment. COLC etherStatsPkts64Octets The total number of packets (including bad packets) received that were 64 octets long (excluding framing bits but including FCS octets). P64C etherStatsPkts65to127Octets The total number of packets (including bad packets) received that were between 65 and 127 octets long inclusive (excluding framing bits but including FCS octets). P65C etherStatsPkts128to255Octets The total number of packets (including bad packets) received that were between 128 and 255 octets long inclusive (excluding framing bits but including FCS octets). P128C etherStatsPkts256to511Octets The total number of packets (including bad packets) received that were between 256 and 511 octets long inclusive (excluding framing bits but including FCS octets). P256C etherStatsPkts512to1023Octets The total number of packets (including bad packets) received that were between 512 and 1023 octets long inclusive (excluding framing bits but including FCS octets). P512C etherStatsPkts1024to1518Octets The total number of packets (including bad packets) received that were between 1024 and 1518 octets long inclusive (excluding framing bits but including FCS octets). P1024C Table 36-5. RMON Statistics and Counters (continued) Statistic Description Counter |
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