mds108 Zarlink Semiconductor, mds108 Datasheet - Page 18

• Manufacturer Part Number: mds108
• Description: Unmanaged 9-port 10/100 Mbps Ethernet Switch
• Manufacturer: Zarlink Semiconductor

12.11
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12.12
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12.13
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Access: parallel interface and I
Address: h07
Access: parallel interface and I
Address: h08
Access: parallel interface and I
Address: h09
Enable and configure port-based priorities for ports 0, 1, 2, and 3
Bit 0
Bit 1
Bit 2
Bit 3
AVDM – VLAN Discard Map
TOSPM – TOS Priority Map
PTPRI – Port Priority
Map VLAN tag into frame discard levels (0 = low drop, 1 = high drop).
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Map TOS field in IP packet into 2 transmit queues (0 = low priority, 1 = high priority).
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
1. TOS = 1 means the appropriate 3-bit TOS subfield is “001.
EN0
P0
EN1
P0
Frame discard for tag value 0
Frame discard for tag value 1
Frame discard for tag value 2
Frame discard for tag value 3
Frame discard for tag value 4
Frame discard for tag value 5
Frame discard for tag value 6
Frame discard for tag value 7
Mapped priority when TOS is 0
Mapped priority when TOS is 1
Mapped priority when TOS is 2
Mapped priority when TOS is 3
Mapped priority when TOS is 4
Mapped priority when TOS is 5
Mapped priority when TOS is 6
Mapped priority when TOS is 7
Port 0: Enable; 1 = enabled
Port 0: Priority; 1 = high, 0 = low
Port 1: Enable; 1 = enabled
Port 1: Priority; 1 = high, 0 = low
2
2
2
C, Read/Write
C, Read/Write
C, Read/Write
Zarlink Semiconductor Inc.
MDS108
1
18
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
(Default 0)
Data Sheet