
AT88RF1354 SPI User Guide For CryptoRF
2.5
Poll Single (WUPB) Command [$01]
This command performs a single Type B polling sequence to detect cards in the Halt State or Idle
State near the antenna. The first response is returned to the host. In the event no error free
response is detected, then an error code is returned.
2.5.1
Command Format
APP 0
APP 1
APP 2
Command Processing
RF Transmit Response
Command Processing
ISTAT goes High
EREG Register Byte
Response Processing
Response Bytes
PICC
Protocol 3
Protocol 2
APP 3
Protocol 1
$50
PUPI 0
PUPI 1
PUPI 2
PUPI 3
ISTAT stays Low
Get thirteen bytes
RF Transmit Command
Host
Reader
Send three bytes
Poll Single ($01)
AFI
PARAM
2-9
8586A—RFID—5/09