STRFNFCA datasheet(16/74 Pages) STMICROELECTRONICS

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Commands

STRFNFCA

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Doc ID 023077 Rev 10

5.3

IDN command (0x01) description

The IDN command (0x01) gives brief information about the STRFNFCA and its revision.

It takes approximately 6 ms to calculate the CRC for the entire ROM. The application must

allow sufficient time for waiting for a response for this command.

0x09

WRREG

Writes Analog Register Configuration (ARC_B) register or writes

index of ARC_B register address.

Writes the Timer Window (TimerW) value dedicated to ISO/IEC

14443 Type A tags.

Writes the AutoDetect Filter enable register dedicated to ISO/IEC

18092 tags.

0x0A

BAUDRATE

Sets the UART baud rate.

0x0D

ACFILTER

Enables or disables the anticollision filter.

0x55

ECHO

STRFNFCA performs a serial interface ECHO command (reply data

0x55

or stops the Listening state when a listen command has been

sent without error).

Other codes

ST Reserved

Table 6.

List of STRFNFCA commands (continued)

Code

Command

Description

Table 7.

IDN command description

Direction

Data

Comments

Example

Host to

STRFNFCA

0x01

Command code

>>>0x0100

0x00

Length of data

STRFNFCA

to Host

0x00

Result code

<<<0x000F4E4643204653324A41535

4320075D2

In this example,

<<<0x4E4643204653324A415354320

: ‘NFC FS2JAST2’, #2 (Last Character

of NFC FS2JAST2 means ROM code

revision 2.)

0x75D2

: CRC of ROM (real CRC may

differ from this example)

<Len>

Length of data

Data in ASCII format

CRC calculated for ROM

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