Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

FOA3251B1 Datasheet(PDF) 9 Page - Infineon Technologies AG

Part No. FOA3251B1
Description  High Speed Clock and Data Recovery for Fiber Optic Applications
Download  25 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  INFINEON [Infineon Technologies AG]
Homepage  http://www.infineon.com
Logo 

FOA3251B1 Datasheet(HTML) 9 Page - Infineon Technologies AG

Zoom Inzoom in Zoom Outzoom out
 9 / 25 page
background image
FOA3251B1
S1028C1
Functional Description
Data Sheet
9
V1.0, 1999-08
2.3
Functional Block Diagram
Figure 2
Block Diagram
2.4
Functional Block Description
The clock and data recovery block (CDR) consists of a bang-bang phase detector (PD),
a frequency window detector (FWD) and a VCO. The PD also provides a kind of
statistical BER signal that is used to generate a loss of signal (LOS) signal. The FWD
moves the VCO in the right frequency range. The frequency window is about 10000 ppm
of the center frequency. When the frequency is out of range a los of lock signal (LOL) is
generated. The center frequency is given by a reference clock signal which is (signal
frequency)/128. The VCO is a 3 stage ring oscillator type.
The clock multiplier unit (CMU) consist of a phase frequency detector (PFD), a VCO and
a retiming Flip-Flop. The PFD is type 4 phase and frequency detector. The low pass
filtered PFD signal as a function of the phase error is shown in Figure 3.
ITB11417
FWD
VCO
PD
Loop
Filter
CDR
D
C
PFD
Loop
Filter
VCO
CMU
Delay Line
DATA
REFCLK
TRDATA
TRCLK
Recovered
DATA
Recovered
Clock
LOS
LOL
Postamp


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 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   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