ACR122T – Application Programming Interface
Version 2.02
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Page 33 of 45
7.5. Getting the Current Setting of the Contactless Interface
Step 1) Get Status Command.
<< FF 00 00 00 02 D4 04h
>> D5 05h [Err] [Field] [NbTg] [Tg] [BrRx] [BrTx] [Type] 80 90 00h
Or if no tag is in the field
>> D5 05 00 00 00 80 90 00h
[Err] is an error code corresponding to the latest error detected.
Field indicates if an external RF field is present and detected (Field = 0x01h) or not (Field = 0x00h).
[NbTg] is the number of targets. The default value is 1.
[Tg]: logical number
[BrRx] : bit rate in reception
0x00h : 106 kbps
0x01h : 212 kbps
0x02h : 424 kbps
[BrTx] : bit rate in transmission
0x00h : 106 kbps
0x01h : 212 kbps
0x02h : 424 kbps
[Type ]: modulation type
0x00h : ISO 14443 or Mifare
0x10h : FeliCa
0x01h : Active mode
0x02h : Innovision Jewel tag