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ST25R3911B Datasheet(PDF) 82 Page - STMicroelectronics

Part # ST25R3911B
Description  High performance HF reader / NFC initiator with 1.4 W supporting VHBR and AAT
PDF  116 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25R3911B Datasheet(HTML) 82 Page - STMicroelectronics

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1.3.41
External field detector threshold register
Address: 29h
Type: RW
Table 67. External field detector threshold register
Bit
Name
Default
Function
Comments(1)
7
-
0
Not used
-
6
trg_l2
0
Peer Detection Threshold.
Refer to Table 68. Peer detection threshold as seen on RFI1 input.
-
5
trg_l1
1
4
trg_l0
1
3
rfe_t3
0
Collision Avoidance Threshold.
Refer to Table 69. Collision avoidance threshold as seen on RFI1 input.
-
2
rfe_t2
0
1
rfe_t1
1
0
rfe_t0
1
1. Default setting takes place at power-up and after Set Default command.
Table 68. Peer detection threshold as seen on RFI1 input
trg_I2
trg_I1
trg_I0
Target peer detection
threshold voltage (mVpp on RFI1)
0
0
0
75
0
0
1
105
0
1
0
150
0
1
1
205
1
0
0
290
1
0
1
400
1
1
0
560
1
1
1
800
ST25R3911B
Registers
DS11793 - Rev 6
page 82/116



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