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XRAG2 датащи(PDF) 18 Page - STMicroelectronics

номер детали XRAG2
подробное описание детали  432-bit UHF, EPCglobal Class1 Generation2 and ISO 18000-6C, contactless memory chip with user memory
PDF  33 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

XRAG2 датащи(HTML) 18 Page - STMicroelectronics

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Tag-to-reader protocol
XRAG2
18/33
Figure 12.
FM0 answer preamble with pilot tone (TRext=1).
1.
V = violation.
6.1.3
Tag-to-reader FM0 end of signaling
As specified in the EPCglobal Class 1 generation 2 RFID UHF specification, revision 1.0.9,
the tag ends transmissions with a dummy ‘1’. Figure 13 shows the different possibilities
occurring during communications.
Figure 13.
Tag-to-reader FM0 end of signaling
6.1.4
Tag-to-reader FM0 data rate
The Tag provides all FM0 backscattering modulation data rate specified in the EPCglobal
Class 1 generation 2 RFID UHF specification, revision 1.0.9:
40 Kbps
≤ LF ≤ 640 Kbps
6.1.5
Tag-to-reader Miller-modulated subcarrier encoding
The tag provides tag-to-reader Miller subcarrier modulation as specified in EPCglobal Class
1 generation 2 RFID UHF specification, revision 1.0.9.
The tag-to-reader Miller subcarrier modulation is chosen by the reader by setting the
Subcarrier Number parameter (M) to 2, 4 or 8 during the Query command starting the
inventory round. Figure 14 shows Miller subcarrier modulation sequence examples for M=2,
M=4 and M=8.
1
ai12316
010
1
0
0
0
0
12 leading zeroes (pilot tone)
V(1)
0
dummy 1
1
dummy 1
0
dummy 1
1
dummy 1
ai12317



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