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TC9208M
Preliminary Data Sheet
11.3.11
CoS Bandwidth Register
Confidential.
40/53
August 1, 2003
Copyright © 2003, IC Plus Corp.
TC9208M-DS-R06
- Address: 43h, 44h
CoSBandwidth
Cos0Weight
not used
Cos1Weight
not used
Cos2Weight
not used
Cos3Weight
not used
7 6 5 4 3 2 1 0
15 14 13 12 11 10 9 8
Bit(s)
Field
Description
2 - 0
CoS0Weight
000
3
not used
not used
6 - 4
CoS1Weight
The weight for priority class 1 queue
7
not used
not used
10 - 8
CoS2Weight
The weight for priority class 2 queue
11
not used
not used
14 - 12
CoS3Weight
The weight for priority class 3 queue
15
not used
not used
CoS[y]Weight
This field sets the weight for its associated priority queue. The transmission
bandwidth percentage given to the associated queue is set by the formula below:
3
Queue y’s priority [%] = F(CoS[y]Weight) * 100 /
Σ ( F(CoS[n]Weight) )
n = 0
Note: y ranges in 0 to 3 and F is a tabled function described bellow:
f(“000”) = 1
f(“100”) = 16
f(“001”) = 2
f(“101”) = 32
f(“010”) = 4
f(“110”) = not used
f(“011”) = 8
f(“111”) = not used
11.3.12
Reserved Register
- Address: 45h, 46h
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