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STRFNFCA 数据表(PDF) 15 Page - STMicroelectronics |
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STRFNFCA 数据表(HTML) 15 Page - STMicroelectronics |
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15 / 74 page ![]() STRFNFCA Commands Doc ID 023077 Rev 10 15/74 5 Commands 5.1 Command format ● The frame from the Host to the STRFNFCA has the following format: <CMD><Len><Data> ● The frame from the STRFNFCA to Host has the following format: <RespCode><Len><Data> These two formats are available either in both UART and SPI modes. Fields <Cmd>, <RespCode> and <Len> are always 1 byte long. <Data> can be from 0 to 255 bytes. Note: The ECHO command is an exception as it has only one byte (0x55). The following symbols correspond to: >>> Frame sent by the Host to STRFNFCA <<< Frame sent by the STRFNFCA to the Host 5.2 List of commands Table 6 summarizes the available commands. Table 6. List of STRFNFCA commands Code Command Description 0x01 IDN Requests short information about the STRFNFCA and its revision. 0x02 PROTOCOLSELECT Selects the RF communication protocol and specifies certain protocol-related parameters. 0x03 POLLFIELD Returns the current value of the FieldDet flag (used in Card Emulation mode). 0x04 SENDRECV Sends data using the previously selected protocol and receives the tag response. 0x05 LISTEN Listens for data using previously selected protocol (used in Card Emulation mode). 0x06 SEND Sends data using previously selected protocol (used in Card Emulation mode). 0x07 IDLE Switches the STRFNFCA into a low consumption Wait for Event (WFE) mode (Power-up, Hibernate, Tag Detector, or Sleep/Field Detector), specifies the authorized wake-up sources and waits for an event to exit to Ready state. 0x08 RDREG Reads Wake-up event register or the Analog Register Configuration (ARC_B) register. |
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