
MVTX2803
Data Sheet
46
Zarlink Semiconductor Inc.
Map VLAN priority into frame discard when low priority buffer usage is above threshold. Frames with high
discard (drop) priority will be discarded (dropped) before frames with low drop priority.
0 – Low discard priority
1 – High discard priority
10.6.11 TOSDML – TOS Discard Map
I
2
C Address: h048, Serial Interface Address:h50A
Accessed by serial interface and I
2
C (R/W)
Map TOS into frame discard when low priority buffer usage is above threshold
Bit [0]:
Frame discard priority for frames with VLAN transmit priority 0
(Default 0)
Bit [1]:
Frame discard priority for frames with VLAN transmit priority 1
(Default 0)
Bit [2]:
Frame discard priority for frames with VLAN transmit priority 2
(Default 0)
Bit [3]:
Frame discard priority for frames with VLAN transmit priority 3
(Default 0)
Bit [4]:
Frame discard priority for frames with VLAN transmit priority 4
(Default 0)
Bit [5]:
Frame discard priority for frames with VLAN transmit priority 5
(Default 0)
Bit [6]:
Frame discard priority for frames with VLAN transmit priority 6
(Default 0)
Bit [7]:
Frame discard priority for frames with VLAN transmit priority 7
(Default 0)
7
6
5
4
3
2
1
0
FDT7
FDT6
FDT5
FDT4
FDT3
FDT2
FDT1
FDT0
Bit [0]:
Frame discard priority for frames with TOS transmit priority 0
(Default 0)
Bit [1]:
Frame discard priority for frames with TOS transmit priority 1
(Default 0)
Bit [2]:
Frame discard priority for frames with TOS transmit priority 2
(Default 0)
Bit [3]:
Frame discard priority for frames with TOS transmit priority 3
(Default 0)
Bit [4]:
Frame discard priority for frames with TOS transmit priority 4
(Default 0)
Bit [5]:
Frame discard priority for frames with TOS transmit priority 5
(Default 0)
Bit [6]:
Frame discard priority for frames with TOS transmit priority 6
(Default 0)
Bit [7]:
Frame discard priority for frames with TOS transmit priority 7
(Default 0)