
AT88RF1354 SPI User Guide For CryptoRF
1.4.3
First Response Byte By Command
The first byte of each response indicates if the requested operation succeeded or failed. When a
command initiates a RF operation where the reader and PICC talk, the first response byte will
always be the AT88RF1354 EREG register contents.
When the command initiates a non-RF operation where there is no reader and PICC
communication the first response byte is usually the AT88RF1354 ACK/NACK response. The
exception is the Sleep command. There is no response to the sleep command.
The first byte response for the AT88RF1354 command set and the CryptoRF command set are
shown in Table 1 and Table 2, respectively.
Table 1.
AT88RF1354 Command Set – First Response Byte
Command Name
First Response Byte
Abort
AT88RF1354 ACK/NACK
Clear
AT88RF1354 ACK/NACK
Poll Continuous
AT88RF1354 EREG Register Contents
Poll Single (REQB)
AT88RF1354 EREG Register Contents
Poll Single (WUPB)
AT88RF1354 EREG Register Contents
Read Buffer
AT88RF1354 ACK/NACK
Read Register
AT88RF1354 ACK/NACK
RF OFF
AT88RF1354 ACK/NACK
RF ON
AT88RF1354 ACK/NACK
Sleep
No Response
TX Data
AT88RF1354 EREG Register Contents
Write Buffer
AT88RF1354 ACK/NACK
Table 2.
CryptoRF Command Set – First Response Byte
Command Name
First Response Byte
All commands
AT88RF1354 EREG Register Contents
1-7
8586A—RFID—5/09