
AT88RF1354 SPI User Guide For CryptoRF
Figure 2.
Illustration Example – Serial Communications with the SPI Interface
PICC CID
N
PICC
Command Processing
RF Transmit Response
Command Processing
Host
Reader
Send six bytes
AT88RF1354 command
Bytes sent to PICC
AT88RF1354 PARAM
FWI
PICC command
RF Transmit Command
PICC PARAM
ISTAT goes High
Response Processing
EREG Register Byte
PICC Bytes Received
ISTAT stays Low
Get six bytes
Response Bytes
PICC ACK/NACK
PICC Status Code
PARAM
1-4
8586A—RFID—5/09