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
The FSDI field codes the FSD that defines the maximum size that an RF host is able to
receive. Table 47 gives the conversion from FDSI to FSD.
Table 47. Conversion from FDSI to FSD
FSDI 0x0
0x1
0x2
0x3
0x4
0x5 0x6 0x7 0x8
0x9h-
0xE
0xF
FSD
16
24
32
40
48
64 96 128 256 RFU
256
The DID field defines the value of the addressed SRTAG2K-D.
Table 48. ATS response
Name
TL
T0
TA(1)
TB(1)
Byte field
0x05
0x78
1 byte
1 byte
Bit field
Length of the ATS response
FSCI = 256 bytes
The maximum ascending data rate is 106 kbps
The maximum descending data rate is 106 kbps
FWI field (9.6 ms when TB = 0x50)
SFGI field (302 µs when TB = 0x50)
The DID is supported
2 CRC bytes
b8-b5
b4-b1
TC(1)
0x02
CRC
2 bytes
5.9.3
The FSCI codes the FSC which stands for the maximum frame size that the SRTAG2K-D is
able to receive. The SRTAG2K-D is able to receive up to 256 bytes of command. If the RF
host sends a command with more than 256 bytes, the SRTAG2K-D will not be able to treat
the command and will not reply.
The FWI which stands for the Frame Waiting time Integer codes the FWT. This time
corresponds to the maximum duration while an RF host shall send before sending the next
command.
The SFGI which stands for the Start-up Frame Guard Time is the minimum time that the
reader shall wait after receiving the response of the SRTAG2K-D.
PPS command & response
PPS (Protocol and Parameter Selection) command and response are defined in ISO/IEC
14443-4, in the Protocol Activation of PICC Type A.
The PPS command allows to change the data rates of the ascending (RF host to SRTAG2K-
D) and descending (SRTAG2K-D to RF host) data rates.
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