ST25R95 datasheet(21/61 Pages) STMICROELECTRONICS

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Direction

Data

Comments

Example

ST25R95 to

Host

0x8A

Error code

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

0x00

Length of data

ST25R95 to

Host

0x8B

Error code

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

0x00

Length of data

ST25R95 to

Host

0x8C

Error code

<<<0x8C00 Invalid length. Used in NFC Forum Tag Type 3, when field

Length < 3

0x00

Length of data

ST25R95 to

Host

0x8D

Error code

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

0x00

Length of data

ST25R95 to

Host

0x8E

Error code

<<<0x8E00 Reception lost without EOF received

0x00

Length of data

1. See Table 16 for details.

Table 16 gives examples of communication between the ST25R95 and a contactless tag. The ST25R95 receives

a SendRecv command (>>> 0x04...) from the host and returns its response to the host (<<< 0x80...). Table 16

provides more details on the ST25R95 response format.

Table 16. List of <DATA> send values for the SendRecv command for different protocols

Protocol

Explanation

Command example

Comments

ISO/IEC 15693

NFC Forum Tag

Type 5

Send example

022000

Example of an Inventory command

using different protocol configuration:

Uplink: 100% ASK, 1/4 coding

Downlink: High data rate, Single sub-

carrier

>>>

0x0403260100 (Inventory - 1

slot)

<<<

0x800D0000CDE0406CD62902E

0057900

If length of data is ‘0’, only the EOF will

be sent. This can be used for an anti-

collision procedure.

Command code

Length of entire data field

Data

ST25R95

Send receive (SendRecv) command (0x04) description

DS12807 - Rev 4

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