AT88RF04C-WA1 Atmel, AT88RF04C-WA1 Datasheet - Page 59
AT88RF04C-WA1
Manufacturer Part Number
AT88RF04C-WA1
Description
Manufacturer
Atmel
Datasheet
1.AT88RF04C-WA1.pdf
(158 pages)
Specifications of AT88RF04C-WA1
Lead Free Status / RoHS Status
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6.16.
6.16.1. Operation
6.16.2. Command Field Description
6.16.3. Response Field Descriptions
5276C–RFID–3/09
Send Checksum Command [$c9]
The Send Checksum command is used to authenticate data sent to the PICC in the Authentication Communication
Security mode or the Encryption Communication Security mode.
When a Write User Zone command is sent in Authentication Communication mode or Encryption Communication mode
the data received by the PICC is saved in a buffer until a cryptographic Checksum is received. The host uses the Send
Checksum command to transmit the Checksum it has computed. If the checksum is valid the PICC writes the data; if
the checksum is incorrect the data is discarded and the cryptographic engine is reset.
CID:
MAC:
CRC:
CID:
ACK:
NACK:
STATUS:
CRC:
Only PICCs in the Active State are permitted to answer this command.
Echo Command >
Command >
The Card ID assigned by the ATTRIB command.
The cryptographic checksum computed by the Host.
Communication error detection bytes.
The PICC transmits its assigned card ID in the response.
Acknowledge, the command executed correctly.
Not Acknowledge, the command did not execute correctly.
PICC status code.
Communication error detection bytes.
AT88SC0808/1616/3216/6416CRF, AT88RF04C
CID
Reader
MAC1
MAC2
CRC1
CRC2
$9
CID
ACK/NACK
STATUS
CRC1
CRC2
PICC
$9
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