AT88SC0104CRF_08 Datasheet, PDF (46/108 Pages) ATMEL Corporation – CryptoRF Specification

PW: The password bytes.
CRC: Communication error detection bytes.
4.18.3 Response Field Descriptions
CID: The PICC transmits it’s assigned card ID in the response.
ACK: Acknowledge, the command executed correctly.
NACK: Not Acknowledge, the command did not execute correctly.
STATUS: PICC status code.
4.18.4
CRC: Communication error detection bytes.
Error Handling
If a Check Password command containing transmission errors is received by the PICC, it is
ignored and no response is send. The PICC reports errors in the status byte of the response..
Table 4-30. Status Codes returned in the Check Password response
Error/Status Message
Status Code
No errors
$00
Password Index Invalid
$A1
Check Password Failure
$D9
Memory Access Error (Security Operation)
$F9
Memory Access Error
$EE
Type
ACK
NACK
NACK
NACK
ACK/NACK
46 AT88SC0104/0204/0404/0808/1616/3216/6416CRF
5276A–RFID–07/08