SRTAG2K-D View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
SRTAG2K-D
STMicroelectronics
'SRTAG2K-D' PDF : 51 Pages View PDF
SRTAG2K-D
RF command sets
b7-b6
0b11
S-Block
0b00: Deselect
0b11: WTX
0: DID field is not present
1: DID field is present
-
RFU
RFU
Table 17. S-Block detailed format
b5-b4
b3
b2
X
X
0
b1
b0
1
0
Note:
After receiving the deselect command, the session is released and SRTAG2K-D enters the
Standby power mode.
In response to a RATS command, SRTAG2K-D returns FWI parameter (default frame
waiting time used); when SRTAG2K-D 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 SRTAG2K-D 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 SRTAG2K-D.
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
SRTAG2K-D command set is built to easily support the NFC Forum Type 4 Tag protocol.
Table 18. Command set overview
Command name
Brief description
NDEF Tag Application Select
Select the NDEF Tag Application
Capability Container Select
Select the capability container (CC) file using the
Select command
NDEF Select
Select the NDEF file
System File Select
Select the system file
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