zl50404 Zarlink Semiconductor, zl50404 Datasheet - Page 50

• Manufacturer Part Number: zl50404
• Description: Lightly Managed/unmanaged 5-port 10/100m Ethernet Switch
• Manufacturer: Zarlink Semiconductor

12.4.1.7
Counts number of frames received with size exceeding the maximum allowable frame size.
12.4.1.8
Counts number of frames received with size less than 64 bytes and with bad FCS.
12.4.1.9
Counts number of frames received with size exceeding maximum frame size and with bad FCS.
12.4.1.10
Counts number of collision events detected.
Only a best estimate since collisions can only be detected while in transmit mode, but not while in receive mode.
12.4.1.11
Six different size groups – one counter for each:
Pkts64Octets
Pkts65to127Octets
Pkts128to255Octets
Pkts256to511Octets
Pkts512to1023Octets
Frame size:
FCS error
Framing error
No collisions
Frame size:
Framing error
No collisions
Frame size:
Framing error
No collisions
Frame size:
OversizePkts
Fragments
Jabbers
Collisions
Packet Count for Different Size Groups
for any packet with size = 64 bytes
for any packet with size from 65 bytes to 127 bytes
or any packet with size from 128 bytes to 255 bytes
for any packet with size from 256 bytes to 511 bytes
for any packet with size from 512 bytes to 1023 bytes
Zarlink Semiconductor Inc.
> 1522 bytes if VLAN Tagged;
(> 1518 bytes if not VLAN Tagged)
don’t care
don’t care
< 64 bytes
don’t care
> 1522 bytes if VLAN Tagged;
(> 1518 bytes if not VLAN Tagged)
don’t care
any size
ZL50404
50
Data Sheet