参数资料
型号: ZL50418GKG2
厂商: ZARLINK SEMICONDUCTOR INC
元件分类: 网络接口
英文描述: DATACOM, LAN SWITCHING CIRCUIT, PBGA553
封装: 37.50 X 37.50 MM, 2.33 MM HEIGHT, LEAD FREE, MS-034, HSBGA-553
文件页数: 11/155页
文件大小: 1928K
代理商: ZL50418GKG2
ZL50418
Data Sheet
108
Zarlink Semiconductor Inc.
12.3.6.4
AVPML – VLAN Tag Priority Map
I2C Address h0AD; CPU Address:h503
Accessed by CPU, serial interface and I2C (R/W)
Registers AVPML, AVPMM and AVPMH allow the eight VLAN Tag priorities to map into eight Internal level transmit
priorities. Under the Internal transmit priority, seven is the highest priority where as zero is the lowest. This feature
allows the user the flexibility of redefining the VLAN priority field. For example, programming a value of 7 into bit 2:0
of the AVPML register would map packet VLAN priority 0 into Internal transmit priority 7. The new priority is used
inside the ZL50418. When the packet goes out it carries the original priority.
12.3.6.5
AVPMM – VLAN Priority Map
I2C Address h0AE, CPU Address:h504
Accessed by CPU, serial interface and I2C (R/W)
Map VLAN priority into eight level transmit priorities:
12.3.6.6
AVPMH – VLAN Priority Map
I2C Address h0AF, CPU Address:h505
Accessed by CPU, serial interface and I2C (R/W)
Map VLAN priority into eight level transmit priorities:
76
5
3
2
0
VP2
VP1
VP0
Bit [2:0]:
Priority when the VLAN tag priority field is 0 (Default 0)
Bit [5:3]:
Priority when the VLAN tag priority field is 1 (Default 0)
Bit [7:6]:
Priority when the VLAN tag priority field is 2 (Default 0)
7
6
43
10
VP5
VP4
VP3
VP2
Bit [0]:
Priority when the VLAN tag priority field is 2 (Default 0)
Bit [3:1]:
Priority when the VLAN tag priority field is 3 (Default 0)
Bit [6:4]:
Priority when the VLAN tag priority field is 4 (Default 0)
Bit [7]:
Priority when the VLAN tag priority field is 5 (Default 0)
75
4
2
1
0
VP7
VP6
VP5
Bit [1:0]:
Priority when the VLAN tag priority field is 5 (Default 0)
Bit [4:2]:
Priority when the VLAN tag priority field is 6 (Default 0)
Bit [7:5]:
Priority when the VLAN tag priority field is 7 (Default 0)
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