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| 型号： | GT-48004A |
| 厂商： | Galileo Technology Services, LLC |
| 英文描述： | Four Port Switched Fast Ethernet Controller(四端口、交换式快速以太网控制器) |
| 中文描述： | 四端口交换式快速以太网控制器（四端口，交换式快速以太网控制器） |
| 文件页数： | 95/106页 |
| 文件大小： | 953K |
| 代理商： | GT-48004A |
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GT-48004A Four Port Switched Fast Ethernet Controller
89
Revision 1.0
N:\Marketing\Docs\Archive\48004A\DATASHEET\Rev 1.0\484ads10.fm
0x040020
CRC Error
This counter is incremented once for every received packet
which meets all the following conditions (i.e. logical AND of
the following conditions):
1. Packet data length is between 64 and MAXFRAMESIZE
bytes inclusive (i.e. valid packet data length per IEEE std).
2. Packet has invalid CRC (non-A also counted packets with
odd number of nibbles).
3. Collision Event has not been detected.
4. Late Collision Event has not been detected.
5. Rx Error Event has not been detected.
-
0x040024
Oversize Frames
This counter is incremented once for every received packet
which meets all the following conditions (i.e. logical AND of
the following conditions):
1. Packet data length is greater than and MAXFRAMESIZE.
2. Packet has valid CRC.
3. Rx Error Event has not been detected.
-
0x040028
Fragments
This counter is incremented once for every received packet
which meets all the following conditions (i.e. logical AND of
the following conditions):
1. Packet data length is less than 64 bytes -OR- packet with-
out SFD and is less than 64 bytes in length.
2. Collision Event has not been detected.
3. Late Collision Event has not been detected.
4. Rx Error Event has not been detected.
-
0x04002c
Jabber
This counter is incremented once for every received packet
which meets all the following conditions (i.e. logical AND of
the following conditions):
1. Packet data length is greater than MAXFRAMESIZE.
2. Packet has invalid CRC.
3. Rx Error Event has not been detected.
-
0x040030
Collision
This counter is incremented once for every received packet
which meets both of the following conditions (i.e. logical AND
of the following conditions):
1. Collision Event has been detected.
2. Rx Error Event has not been detected.
-
0x040034
Late Collision
This counter is incremented once for every received packet
which meets both of the following conditions (i.e. logical AND
of the following conditions):
1. Late Collision Event has been detected.
2. Rx Error Event has not been detected.
-
0x040038
Frames 64 Bytes
This counter is incremented once for every received and
transmitted packet with size of 64 bytes. This counter
includes rejected received and transmitted packets.
-
0x04003c
Frames 65-127
Bytes
This counter is incremented once for every received and
transmitted packet with size of 65 to 127 bytes. This counter
includes rejected received and transmitted packets.
-
Table 36: Port MIB Counters
A ddr es s
fo r P o r t
0
C ount er N a me
F unct i on
Ini t ia l
Va l u e
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