
MVTX2802
Data Sheet
57
Zarlink Semiconductor Inc.
In Tag based VLAN Mode
Bit [5:3]:
Fixed Transmit priority. Used when bit[7] = 1
(Default 0)
000 Transmit Priority Level 0 (Lowest)
001 Transmit Priority Level 1
010 Transmit Priority Level 2
011 Transmit Priority Level 3
100 Transmit Priority Level 4
101 Transmit Priority Level 5
110 Transmit Priority Level 6
111 Transmit Priority Level 7 (Highest)
Bit [6]:
Fixed Discard priority
(Default 0)
0 – Discard Priority Level 0 (Lowest)
1 – Discard Priority Level 7(Highest)
Bit [7]:
Enable Fix Priority
(Default 0)
0 Disable fix priority. All frames are analyzed. Transmit Priority and Drop Priority are based on VLAN
Tag or TOS.
1 Transmit Priority and Discard Priority are based on values programmed in bit [6:3]
Bit [1]:
Ingress filter enable
(Default 1)
0 Disable – Ingress filter. Packets with VLAN not belonging to source port are forwarded if
destination port belongs to the VLAN. Symmetric VLAN.
1 Enable – Packets are discarded when source port is not a VLAN member. Asymmetric VLAN.
Bit [2]:
Force untagged out
(Default 1).
0 Disable
1 Force untagged output.
All packets transmitted from this port are untagged. This register is used when this port is
connected to legacy equipment that does not support VLAN tagging.
Bit [5:3]:
Fixed Transmit priority
(Default 0)
Used When Bit [7] = 1
000 Transmit Priority Level 0 (Lowest)
001 Transmit Priority Level 1
010 Transmit Priority Level 2
011 Transmit Priority Level 3
100 Transmit Priority Level 4
101 Transmit Priority Level 5
110 Transmit Priority Level 6
111 Transmit Priority Level 7 (Highest)
Bit [6]:
Fixed Discard priority
(Default 0)
Used When Bit [7] = 1
0 - Discard Priority Level 0 (Lowest)
1 Discard Priority Level 1 (Highest)
Bit [7]:
Enable Fix Priority
(Default 0)
0 Disable fix priority. All frames are analyzed. Transmit Priority and Drop Priority are based on
VLAN Tag or TOS.
1 Transmit Priority and Discard Priority are based on values programmed in bit [6:3]