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ST25R3918 Datasheet(PDF) 66 Page - STMicroelectronics

Part # ST25R3918
Description  Multi-purpose NFC transceiver
PDF  141 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25R3918 Datasheet(HTML) 66 Page - STMicroelectronics

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Application information
ST25R3918
66/141
DS13490 Rev 2
4.5.4
Mode definition register
Register space: A
Address: 03h
Type: RW
Table 18. Mode definition register(1)
Bit
Name
Default
Function
Comments
7targ
0
0: Initiator
1: Target
-
6om3
0
Refer to Table 19 and Table 20
Selection of operation mode.
Different for initiator and target modes.
5om2
0
4om1
0
3om0
1
2
tr_am
0
0: OOK
1: AM
Selects RF modulation mode.
1RFU
0
-
-
0RFU
0
-
-
1. Register can be written only in case crystal clock is present and stable (oscok = 1).
Table 19. Initiator operation modes(1)
1. If a non supported operation mode is selected the Tx/Rx operation is disabled.
om3
om2
om1
om0
Comments
0001
ISO14443A
0010
ISO14443B
0100
NFC Forum Type 1 tag (Topaz)
1110
Sub-carrier stream mode
1111
BPSK stream mode
Other combinations
RFU
Table 20. Target operation modes(1)
om3
om2
om1
om0
Comments
0
0
0
1
ISO14443A passive target mode
010
0
FeliCa™ passive target mode
1x
x
x
Bit rate detection mode
– om2: enable FeliCa™ bit rate detection mode
–om1: RFU
– om0: enable ISO14443A bit rate detection mode
Other combinations
Not allowed



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