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www.digiembedded.com 55

How the CMO

works

To measure the load current used on different power supplies, measure DC voltage

across the sense (CMO) resistor. The value of the resistor is 0.025

R ± 1%. Calculate

the current using this equation:

I = U/R

where

 I = current in Amps

 U = measured voltage in Volts

 R = 0.025 Ohms

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

JTAG interface

JTAG Multi-Ice connector X13

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 79 80

NS9210 Processor Module 1
Hardware Reference 1
Contents 3
About the Module 9
Features and functionality 10
Module pinout 10
. . . . 11
Chapter 1 12
Configuration pins — Module 24
Boot process 26
About the Development Board 35
Chapter 2 36
User interface 38
Serial UART ports 46
C interface 50
SPI interface 52
Current Measurement Option 54
Ethernet interface 58
Module and test connectors 62
Appendix A:Specifications 67
Power requirements 68
Module, top view 70
Module, side view 70
Appendix B:Certifications 75
Modifications (FCC 15.21) 76
Industry Canada 76
International EMC Standards 78

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Digi NS9210 Specifiche Pagina 55

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