AT88RF1354 SPI User Guide For CryptoRF
®
2.6.2
Example
String Decode > O0003 Host sends three bytes thru microcontroller to AT88RF1354 serial port.
>
08
AT88RF1354 Read Data Buffer Command.
>
00
Starting address.
>
04
Length "L" of data to be read in bytes.
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 >
I0005 Host gets five bytes from AT88RF1354 buffer.
>
01
AT88RF1354 Response: $01 (Acknowledge).
>
12
AT88RF1354 Response: Data 1
>
34
AT88RF1354 Response: Data 2
>
12
AT88RF1354 Response: Data "L - 1"
>
34
AT88RF1354 Response: Data "L"
ISTAT stays Low.
The AT88RF1354 buffer is empty. The AT88RF1354 will now accept a new command.
2.6.3
Operation
Read the internal 256 byte RAM buffer starting at the Address specified.
2-12
8586A—RFID—5/09