SMSC LAN9311 Manual De Usuario

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

Revision 1.4 (08-19-08)

68

SMSC LAN9311/LAN9311i

 

The transmit queue priority is based on the packet type and device configuration as shown in

. Refer to 

 for definitions of the configuration bits.

Queue = 

ALR Priority

DA Highest 

Priority

ALR Static Bit

Y

Y

Resolved Priority =

Priority Regen[VLAN 

Priority]

N

Packet is IPv 4/v6

 & Use IP

Resolved Priority =

IP Precedence

Y

Use Precedence 

Y

N

Resolved Priority =

DIFFSERV[TC]

N

N

Y

VLAN Enable & 

Packet is 

Tagged

Y

N

N

Resolved Priority =

Default Priority[Source  

Port]

wait for ALR result

Queue =

Traffic Class[Resolved Priority]

Packet is IPv 4

Resolved Priority =

DIFFSERV[TOS]

Y

N

Get Queue Done

VL Higher 

Priority

VLAN Enable & 

Packet is 

Tagged

N

Y

Get Queue

Packet from Host

N

Y