zl50411 Zarlink Semiconductor, zl50411 Datasheet - Page 56

• Manufacturer Part Number: zl50411
• Description: Managed 9-port Fast Ethernet Switch With Private Vlan
• Manufacturer: Zarlink Semiconductor

Note: max. frame size may be BUF_LIMIT, if enabled on this port. Also, if a frame >1518B but <BUF_LIMIT has a
CRC error, it will be countered as an Oversized frame.
11.2.1.6
Counts number of frames received with size less than the length of a short event.
Use ZL50411 counter “Short Event”, C[24].
11.2.1.7
Counts number of frames received with size under 64 bytes, but greater than the length of a short event.
Use ZL50411 counter “Undersize Frames”, C[22].
11.2.1.8
Counts number of collision events.
Use ZL50411 counter “Collision”, C[25].
11.2.1.9
Counts number of collision events that occurred late (after LateEventThreshold = 64 bytes).
Use ZL50411 counter “Port Late Collision”, C[29].
PortShortEvents
PortRunts
PortCollisions
PortLateEvents
Frame size:
Framing error: don’t care
FCS error: don’t care
No collisions
Frame size:
Framing error: don’t care
FCS error: don’t care
No collisions
Frame size:
Frame size:
Zarlink Semiconductor Inc.
ZL50411
56
Min. Frame Size
< 10 bytes
Min. Frame Size
> 10 bytes,
Min. Frame Size
Min. Frame Size
any size
any size
Max. Frame Size
Max. Frame Size
< 64 bytes
Max. Frame Size
Max. Frame Size
Data Sheet