AT88RF04C-MY1G View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT88RF04C-MY1G

CryptoRF® Specification

Atmel Corporation 

6.18. IDLE Command [$cB]

The IDLE command resets the PICC and places it in the Idle State. This command is used at the end of a transaction.

Reader

PICC

Command >

CID

$B

CRC1

CRC2

Echo Command >

CID

$B

ACK

STATUS

CRC1

CRC2

6.18.1. Operation

Sending the IDLE command (with a matching CID) to a PICC in the Active State resets the PICC and places it in the

Idle State. The User Zone, password, and authentication registers are cleared before the PICC enters the Idle State.

The PICC responds only to successful IDLE commands. Only PICCs in the Active State are permitted to answer this

command.

6.18.2. Command Field Descriptions

CID:

The Card ID assigned by the ATTRIB command.

CRC:

Communication error detection bytes.

6.18.3. Response Field Descriptions

CID:

The PICC transmits its assigned card ID in the response.

ACK:

Acknowledge, the command executed correctly.

STATUS: PICC status code.

CRC:

Communication error detection bytes.

6.18.4. Error Handling

If an IDLE 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 52.

No errors

Status Codes returned in the IDLE response

Error/Status Message

Status Code

$00

Type

ACK

6.18.5. Notes

The HLTB command is identical for 88SC and 88RF CryptoRF PICCs.

62 AT88SC0808/1616/3216/6416CRF, AT88RF04C

5276C–RFID–3/09

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