AT88RF04C-MY1G View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT88RF04C-MY1G

CryptoRF® Specification

Atmel Corporation 

AT88SC0808/1616/3216/6416CRF, AT88RF04C

Table 46. PARAM byte options for the Read System Zone command.

Command

Read System Zone

Read Fuse Byte

Read Checksum

PARAM

ADDR

$00

Address

$01

$FF

$02

$FF

All Other Values Are Not Supported

“L”

# of bytes – 1

$00

$01

ADDR:

L:

CRC:

The address must be $FF for Read Checksum.

The number of bytes to read minus 1. L must be $01 for Read Checksum.

Communication error detection bytes.

6.14.3. Response Field Descriptions

CID:

The PICC transmits its assigned card ID in the response.

DATA:

The two checksum bytes read from the cryptographic engine.

ACK:

Acknowledge, the command executed correctly.

NACK:

Not Acknowledge, the command did not execute correctly.

STATUS: PICC status code.

CRC:

Communication error detection bytes.

6.14.4. Error Handling

If a Read System Zone command containing transmission errors is received by the PICC, it is ignored and no response

is sent. The PICC reports errors in the status byte of the response.

Table 47. Status Codes returned in the Read System Zone response for Read Checksum.

Error/Status Message

Status Code

No errors

$00

PARAM Invalid

$A1

Address Invalid

$A2

Length Invalid

$A3

Memory Access Error

$EE

Type

ACK

NACK

NACK

NACK

ACK/NACK

6.14.5. Notes

The Read Checksum Option of the Read System Zone command is identical for 88SC and 88RF CryptoRF PICCs.

55

5276C–RFID–3/09

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