AT88RF04C-MY1G View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT88RF04C-MY1G

CryptoRF® Specification

Atmel Corporation 

6.14. Read System Zone Command, Read Checksum Option [$c6]

The Read Checksum Option of the System Read command reads the checksum from the cryptographic engine.

Reader

PICC

Command >

PARAM = $02 >

ADDR = $FF >

L = $01 >

CID

$6

PARAM

ADDR

“L”

CRC1

CRC2

Echo Command >

CID

$6

NACK

STATUS

CRC1

CRC2

FAILURE RESPONSE

< Error Code

Echo Command >

CID

$6

ACK

DATA 1

DATA 2

STATUS

CRC1

CRC2

SUCCESS RESPONSE

< MAC1

< MAC2

<Status Code

6.14.1. Operation

The Read Checksum Option of the Read System Zone command reads the checksum from the cryptographic engine.

This operation can be performed in the Normal, Authentication, or Encryption Communication modes. Only PICCs in

the Active State are permitted to answer this command.

6.14.2. Command Field Description

CID:

The Card ID assigned by the ATTRIB command.

PARAM:

The PARAM byte selects the type of read operation to be performed. PARAM must be $02 for Read

Checksum.

54 AT88SC0808/1616/3216/6416CRF, AT88RF04C

5276C–RFID–3/09

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