RF command sets
SRTAG2KL
Name
Byte field
Bit field
Instruction code
FSDI
DID (0 ≤ DID ≤ 14)
2 CRC bytes
Table 48. RATS command
INS
Param
0xE0
1 byte
b7-b4
b3-b0
CRC
2 bytes
The FSDI field codes the FSD that defines the maximum size that an RF host is able to
receive. Table 49 gives the conversion from FDSI to FSD.
Table 49. 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 SRTAG2KL.
Name
TL
Table 50. ATS response
T0
TA(1)
TB(1)
Byte field
0x05
0x75
0x80
Bit field
Length of the ATS
response
FSCI = 5 => FSC = 64 bytes
The maximum ascending data rate is 106 kbps
The maximum descending data rate is 106 kbps
FWI field (FWI = 6 => FWT = 19.2 ms)
SFGI field (SFGI = 0 => SFGT =302 µs)
The DID is supported
2 CRC bytes
0x60
b8-b5
b4-b1
TC(1)
0x02
CRC
2 bytes
The FSCI codes the FSC which stands for the maximum frame size that the SRTAG2KL is
able to receive. The SRTAG2KL is able to receive up to 64 bytes of command. If the RF host
sends a command with more than 64 bytes, the SRTAG2KL 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.
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