ADF7021 datasheet(58/64 Pages) AD

tên linh kiện	ADF7021

Giải thích chi tiết về linh kiện	High Performance Narrow-Band Transceiver IC

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58 / 64 page

ADF7021

Data Sheet

Rev. B | Page 58 of 64

PL2

PL1

SYNC BYTE

LENGTH

12 BITS

16 BITS

20 BITS

24 BITS

MT2

MT1

MATCHING

TOLERANCE

ACCEPT 0 ERRORS

ACCEPT 1 ERROR

ACCEPT 2 ERRORS

ACCEPT 3 ERRORS

SYNC_BYTE_SEQUENCE

CONTROL

BITS

Figure 73. Register 11—Sync Word Detect Register Map

DATA_PACKET_LENGTH

CONTROL

BITS

LOCK THRESHOLD MODE

THRESHOLD FREE RUNNING

LOCK THRESHOLD AFTER NEXT SYNCWORD

FOR DATA PACKET LENGTH NUMBER OF BYTES

LOCK THRESHOLD

DATA PACKET LENGTH

INVALID

1 BYTE

...

255

255 BYTES

SWD MODE

SWD PIN LOW

SWD PIN HIGH AFTER NEXT SYNCWORD

FOR DATA PACKET LENGTH NUMBER OF BYTES

INTERRUPT PIN HIGH

Figure 74. Register 12—SWD/Threshold Setup Register Map

Lock threshold locks the threshold of the envelope detector. This has the effect of locking the slicer in linear demodulation and locking

the AFC and AGC loops when using linear or correlator demodulation.

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