AS3953B datasheet(19/64 Pages) AMSCO

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[v1-04] 2016-Jan-07

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AS3953B − Detailed Description

Figure below defines the coding of the TC(1) byte.

Figure 23:

TC(1) Byte Coding

Proprietary Commands

Proprietary commands have the same format as blocks defined

in ISO 14443-4 with the difference that optional NAD field is

abandoned since NAD is not supported by the AS3953B. The

same format is used for commands sent by PCD and AS3953B

responses. Figure below defines the coding of the Proprietary

commands.

Figure 24:

Proprietary Commands Coding

Prologue field consists of the mandatory Protocol Control Byte

and an optional Card Identifier Byte. Card identifier byte is

according to ISO 14443-4 definition. Epilogue field contains

CRC over transmitted block.

MSB

LSB

Description

0000010

Coding of ATS byte TC(1)

CID

NAD

Prologue Field

Information

Field

Epilogue

Field

PCB

[CID]

INF

EDC

1 byte

2 bytes

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