參數(shù)資料
型號: MSX532-TB792
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 數(shù)字信號處理外設
英文描述: DSP-CROSSBAR SWITCH, PBGA792
封裝: TBGA-792
文件頁數(shù): 52/61頁
文件大?。?/td> 726K
代理商: MSX532-TB792
MSX Family Datasheet
56
[Rev. 1.10] 3/21/02
Fairchild Semiconductor
5. Power Consumption
There are three components to consider when calculating power for the MSX Family of devices:
1.
Steady State Component—This element equals 252 milliwatts.
2.
Connection Component—This element equals .006mW x Mb/s x connections.
3.
Output Drive Component—This element equals .013mW x number of outputs x Mb/s x capacitive
load (pF).
Power consumption = Steady State Component + Connection Component + Output Drive Component.
= 252mW + (0.006 x Mb/s x #connections) + (0.013 x Mb/s x #outputs x Cload)
The following examples shows the total power consumption as determined by the above formula:
Example 1
Using the MSX532 with 10 Mb/s into a 10pF load with 266 inputs connected to 266 outputs:
Power consumption = 252 mWatts + (0.006 x 10 x 266) + (0.013 x 266 x 10 x 10)
= 252mW
+
16mW
+
346mW
= 0.614 Watts
Example 2
Using the MSX532 with 150 Mb/s into a 10pF load with 266 inputs connected to 266 outputs:
Power consumption = 252 mWatts + (0.006 x 150 x 266) + (0.013 x 266 x 150 x 10)
= 252mW
+
239.4mW
+
5187mW
= 5.68 Watts
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