RX95HF Datasheet, PDF (37/44 Pages) STMicroelectronics – Near field communication transceiver for tag emulation

RX95HF
Card emulation communication
Appendix A Card emulation communication
The following information is a log of basic exchanges between the CR95HF transceiver and
RX95HF card emulator.
CR95HFDLL_STCMD: Is the standard RX95HF frame exchange command. In this command,
the first byte 01 is not sent, it is only requested by the RX95HF development software in
order to recognize if it is a user or service command.
CR95HFDLL_SENDRECV: Is the encapsulated CR95HF SendReceive command for which
command codes, number of bytes, and CRC are automatically appended to the parameter.
In this section,
 The CR95HF data exchanges are in blue.
 The RX95HF card emulation data exchanges are in green.
 The CR95HF and RX95HF command overhead (command code, length of data and
transmission flag) is in bold.
 The CRC value is in red.
When the CRC append option is set in the Protocol Select command, the CRC is
automatically appended by the RX95HF, but the CRC is not visible in the instruction log file.
When the CRC is present in the command or response, CRC reply is in italics.
The following symbols correspond to:
>>> Frame sent by Host to RX95HF
<<< Frame received by Host from RX95HF
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