zl50400 Zarlink Semiconductor, zl50400 Datasheet - Page 83
zl50400
Manufacturer Part Number
zl50400
Description
Lightly Managed/unmanaged 9-port 10/100 M Ethernet Switch
Manufacturer
Zarlink Semiconductor
Datasheet
1.ZL50400.pdf
(124 pages)
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12.3.6.11
I²C Address h077, CPU Address 51B
Accessed by CPU and I²C (R/W)
Buffer reservation for class 3. Granularity 16 granules. (Default 0)
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 ZL50400. 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:
Bits [7:0]:
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]:
C3RS – Class 3 Reserve Size
AVPML – VLAN Tag Priority Map
AVPMM – VLAN Priority Map
AVPMH – VLAN Priority Map
Class 3 FCB Reservation
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)
Zarlink Semiconductor Inc.
ZL50400
83
Data Sheet
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