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ST25R3910 Datasheet(PDF) 48 Page - STMicroelectronics

Part # ST25R3910
Description  AM/PM demodulator
PDF  65 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25R3910 Datasheet(HTML) 48 Page - STMicroelectronics

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ST25R3910
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DocID029768 Rev 2
1.3.16
External Trim Register
Address: 0Fh
Type: RW
Table 23. External Trim Register(1)
Bit
Name
Default
Function
Comments
7
trim_s
0
0: LC trim switches are defined
by result of Calibrate Antenna
command
1: LC trim switches are defined
by bits tre_x written in this
register
Defines source of driving switches on TRIMx pins
6tre_3
0
MSB
LC trim switches are defined by data written in
this register when trim_s=1.
A bit set to 1 indicates that the corresponding
transistor on TRIM1_x and TRIM2_x pin is
switched on.
5tre_2
0
-
4tre_1
0
-
3tre_0
0
LSB
2-
-
Not used
-
1-
-
-
0-
-
-
1. Default setting takes place at power-up and after Set Default command.



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