Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

Preview PDF HTML

RF69 Datasheet(PDF) 60 Page - List of Unclassifed Manufacturers

Part # RF69
Description  Low Power Integrated UHF Transceiver with On-Chip 20dBm PA
PDF  81 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ETC2 [List of Unclassifed Manufacturers]
Direct Link  
Logo ETC2 - List of Unclassifed Manufacturers

RF69 Datasheet(HTML) 60 Page - List of Unclassifed Manufacturers

Back Button RF69 Datasheet HTML 56Page - List of Unclassifed Manufacturers RF69 Datasheet HTML 57Page - List of Unclassifed Manufacturers RF69 Datasheet HTML 58Page - List of Unclassifed Manufacturers RF69 Datasheet HTML 59Page - List of Unclassifed Manufacturers RF69 Datasheet HTML 60Page - List of Unclassifed Manufacturers RF69 Datasheet HTML 61Page - List of Unclassifed Manufacturers RF69 Datasheet HTML 62Page - List of Unclassifed Manufacturers RF69 Datasheet HTML 63Page - List of Unclassifed Manufacturers RF69 Datasheet HTML 64Page - List of Unclassifed Manufacturers Next Button
Zoom Inzoom in Zoom Outzoom out
 60 / 81 page
background image
RF69
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com
5.5.8.2. Data Whitening
Another technique called whitening or scrambling is widely used for randomizing the user data before radio transmission.
The data is whitened using a random sequence on the Tx side and de-whitened on the Rx side using the same sequence.
Comparing to Manchester technique it has the advantage of keeping NRZ data rate i.e. actual bit rate is not halved.
The whitening/de-whitening process is enabled if DcFree = 10. A 9-bit LFSR is used to generate a random sequence. The
payload and 2-byte CRC checksum is then XORed with this random sequence as shown below. The data is de-whitened
on the receiver side by XORing with the same random sequence.
Payload whitening/de-whitening is thus made transparent for the user, who still provides/retrieves NRZ data to/from the
FIFO.
L F S R P o l yn o m ia l = X 9 + X 5 + 1
X 8
X 7
X 6
X 5
X 4
X 3
X 2
X 1
X 0
T ra n s m it d a ta
W h ite n e d d at a
Figure 38. Data Whitening
Page 59



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com