
AT88RF1354 SPI User Guide For CryptoRF
®
2.1
Abort Command [$0D]
This command aborts a command in progress and places the reader in the idle state.
2.1.1
Command Format
ISTAT goes High
ACK/NACK
Abort ($0D)
ISTAT stays Low
Get one byte
Command Processing
Response Bytes
PICC
Host
Reader
Send one byte
2.1.2
Example
String Decode > O0001 Host sends one byte thru microcontroller to AT88RF1354 serial port.
>
0D
AT88RF1354 ABORT command.
Wait for AT88RF1354 ISTAT pin state.
ISTAT goes High.
The AT88RF1354 buffer has data ready. Data must be read before the next command can be issued.
String Decode >
I0001 Host gets one byte from AT88RF1354 buffer.
>
01
AT88RF1354 Response: $01 (Acknowledge).
ISTAT stays Low.
The AT88RF1354 buffer is empty. The AT88RF1354 will now accept a new command.
2.1.3
Operation
The Abort command stops a command operation in progress. The contents of the RAM buffer
and registers are not modified by the Abort command.
2-2
8586A—RFID—5/09