ZL50405GDC ZARLINK [Zarlink Semiconductor Inc], ZL50405GDC Datasheet - Page 90

• Manufacturer Part Number: ZL50405GDC
• Description: Managed5-Port 10/100 M Ethernet Switch
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

12.3.6.12
I²C Address h056; CPU Address:h530
Accessed by CPU 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 ZL50405. When the packet goes out it carries the original priority.
12.3.6.13
I²C Address h057, CPU Address:h531
Accessed by CPU and I²C (R/W)
Map VLAN priority into eight level transmit priorities:
12.3.6.14
I²C Address h058, CPU Address:h532
Accessed by CPU and I²C (R/W)
Map VLAN priority into eight level transmit priorities:
12.3.6.15
I²C Address h05C, CPU Address:h533
Accessed by CPU and I²C (R/W)
Map VLAN priority into frame discard when low priority buffer usage is above threshold
Bits [2:0]:
Bits [5:3]:
Bits [7:6]:
Bit [0]:
Bits [3:1]:
Bits [6:4]:
Bit [7]:
Bits [1:0]:
Bits [4:2]:
Bits [7:5]:
Bit [0]:
AVPML – VLAN Tag Priority Map
AVPMM – VLAN Priority Map
AVPMH – VLAN Priority Map
AVDM – VLAN Discard Map
Priority when the VLAN tag priority field is 0 (Default 0)
Priority when the VLAN tag priority field is 1 (Default 0)
Priority when the VLAN tag priority field is 2 (Default 0)
Priority when the VLAN tag priority field is 2 (Default 0)
Priority when the VLAN tag priority field is 3 (Default 0)
Priority when the VLAN tag priority field is 4 (Default 0)
Priority when the VLAN tag priority field is 5 (Default 0)
Priority when the VLAN tag priority field is 5 (Default 0)
Priority when the VLAN tag priority field is 6 (Default 0)
Priority when the VLAN tag priority field is 7 (Default 0)
Frame drop priority when VLAN Tag priority field is 0 (Default 0)
Zarlink Semiconductor Inc.
ZL50405
90
Data Sheet