zl50409 Zarlink Semiconductor, zl50409 Datasheet - Page 80

• Manufacturer Part Number: zl50409
• Description: Managed 9-port 10/100m Ethernet Switch
• Manufacturer: Zarlink Semiconductor

12.3.3
Trunk Group – Up to eight RMAC ports can be selected for each trunk group.
12.3.3.1
CPU Address:h200+n (n = trunk group)
Accessed by CPU (R/W)
Bit [7:0] Port 7-0 bit map of trunk n. (Default 0)
Bit [3]:
Bit [4]:
Bit [5]:
Bit [6]:
Bit [7]:
(Group 2 Address) Port Trunking Groups
TRUNKn– Trunk Group 0~7
Flooding control in secure mode
0: Enable - Learning disabled port will not receive any flooding packets (Default)
1: Disable
Support MAC address 0
0: MAC address 0 is not learned. (Default)
1: MAC address 0 is learned.
Disable IEEE multicast control frame (01-80-C2-00-00-00 to 01-80-C2-00-00-FF) to
CPU in managed mode. In unmanaged mode, frame is forwarded as multicast (except
PAUSE frame).
0: Frame is forwarded to CPU (Default)
1: Frame is forwarded as multicast (except PAUSE frame)
IP Multicast Enable
0: Disable (default)
1: Enable
In general, this bit is equal to ^FEN[4].
Enable logical port match in secure mode
0: Disable (Default)
1: Enable - When Well Known or User Define logical port force discard enabled, force
any IP packet with logical port number matching logical port numbers to CPU.
This means packet with destination MAC address 0 is forwarded as unknown
destination. It is subjected to unicast to multicast rate control.
Zarlink Semiconductor Inc.
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Data Sheet