SRTAG2KL View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'SRTAG2KL' PDF : 51 Pages View PDF
SRTAG2KL
RF command sets
Note:
Table 18. S-Block detailed format
b7-b6
b5-b4
b3
b2
b1
b0
0b11
X
X
0
1
0
S-Block
0b00: Deselect
0b11: WTX
0: DID field is not present
1: DID field is present
Must be set to 0
Must be set to 1
Must be set to 0
After receiving the deselect command, the session is released and SRTAG2KL enters the
Standby power mode.
In response to a RATS command, SRTAG2KL returns FWI parameter (default frame waiting
time used); when SRTAG2KL needs more time for a command execution, it requests a frame
waiting time extension by responding 0xF2 0xWTX (Request waiting time = FWI * WTX). If
the reader accepts SRTAG2KL request, it acknowledges by sending the command 0xF2
0xWTX. The frame waiting time becomes FWI * WTX for the current command only.
5.5
CRC of the RF frame
The two CRC bytes check the data transmission between the RF host and the SRTAG2KL.
For the RF frame, the CRC is computed on all the data bits in the frame, excluding parity
bits, SOF and EOF, and the CRC itself.
The CRC is as defined in ISO/IEC 13239. The initial register content shall be 0x6363 and
the register content shall not be inverted after calculation.
5.6
5.6.1
NFC Forum Type 4 Tag protocol
Commands set
SRTAG2KL command set is built to easily support the NFC Forum Type 4 Tag protocol.
Table 19. Command set overview
Command name
Brief description
NDEF Tag Application Select
Capability Container Select
NDEF Select
System File Select
Select the NDEF Tag Application
Select the capability container (CC) file using the
Select command
Select the NDEF file using the Select command.
Select the system file using the Select command.
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