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ST25R3920B Datasheet(PDF) 24 Page - STMicroelectronics

Part # ST25R3920B
Description  Automotive NFC reader for CCC digital key and car center console
PDF  158 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25R3920B Datasheet(HTML) 24 Page - STMicroelectronics

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Application information
ST25R3920B
24/158
DS13890 Rev 4
The Operation control register contains bits rx_chn and rx_man, which define whether only
one or both demodulation channels are active:
•
bit rx_man defines the channel selection mode when both channels are active
(automatic or manual)
•
bit ch_sel defines which channel is used for decoding.
Figure 5. Receiver block diagram
Table 2. RX channel selection
rx_chn
rx_man
ch_sel
Selected reception channel
0
0
x
Automatic selection
0
1
0
AM or I channel
0
1
1
PM or Q channel
1
x
0
AM or I channel
1
x
1
PM or Q channel



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