STRFNFCA datasheet(15/74 Pages) STMICROELECTRONICS

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STRFNFCA

Commands

Doc ID 023077 Rev 10

15/74

Commands

5.1

Command format

●

The frame from the Host to the STRFNFCA has the following format:

●

The frame from the STRFNFCA to Host has the following format:

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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