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AN3955 データシート(PDF) 25 Page - STMicroelectronics

部品番号 AN3955
部品情報  This document describes
PDF  68 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3955 データシート(HTML) 25 Page - STMicroelectronics

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AN3955
CR95HF low level layer
Doc ID 022017 Rev 1
25/68
4.18
Application example: protocol selection and communication
To communicate with a contactless tag, the application must select the RF protocol by
sending a ProtocolSelect command. Then, the application can use SendRecv commands to
send data to a contactless tag.
The user can select another protocol or change RF parameters (e.g. choose another
datarate) at any time by issuing again a ProtocolSelect command. Figure 3 shows an
example of function flowchart.
Figure 3.
Example of function flowchart
AI18875
Start
Echo
Echo
response?
Select
protocol
Selected?
SendRecv
Another
protocol?
No
Error code
Yes
No
Yes
Yes



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