ST25R95 datasheet(26/61 Pages) STMICROELECTRONICS

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Table 20. Response codes from the ST25R95 in Listening mode

Direction

Data

Comments

Example

ST25R95 to Host

Result code

<<<0x80022627

The frame from the reader is decoded. This is an example of an

ISO/IEC 14443 Type A frame (REQA) received in card emulation

mode.

<Len>

Length of data

<Data>

Data received.

Interpretation depends

on protocol

ST25R95 to Host

Error code

<<<0x8500 Listening mode was cancelled by the application

Length of data

ST25R95 to Host

Error code

<<<0x8600 Communication error

Length of data

ST25R95 to Host

Error code

<<<0x8800 Invalid SOF

Length of data

ST25R95 to Host

Error code

<<<0x8900 Receive buffer overflow (too many bytes received)

Length of data

ST25R95 to Host

Error code

<<<0x8A00 Framing error (start bit=0, stop bit=1)

Length of data

ST25R95 to Host

Error code

<<<0x8B00 EGT time out (for ISO/IEC 14443B)

Length of data

ST25R95 to Host

Error code

<<<0x8D00 CRC error (Used in NFC Forum Tag Type 3 protocol)

Length of data

ST25R95 - Host

Error code

<<<0x8E00 Reception lost without EOF received

Length of data

If the request from the Reader was received and decoded correctly, the ST25R95 will send data back to the Host

(card emulation application). This is explained in Table 21.

Table 21. Data format sent to the Host in Listening mode

Protocol

Explanation

Response example

Comments

ISO/IEC-14443 Type

Request example

80 0A 9370800F8C8E 8D 4E01 08

<<<0x80 0A 9370800F8C8E

8D 4E01 08

Result code

Length of entire data field

Data received from reader

Received value of BCC (if any)

Received value of CRC (if any)

7: RFU

6: RFU

5: CRC error

4: Parity error

3:0: number of significant bits in last byte

ST25R95

Listen command (0x05) description

DS12807 - Rev 4

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