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CDCE62002 Datasheet(PDF) 32 Page - Texas Instruments

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Part # CDCE62002
Description  Four Output Clock Generator/Jitter Cleaner With Integrated Dual VCOs
PDF  49 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

CDCE62002 Datasheet(HTML) 32 Page - Texas Instruments

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SYNTHESIZER BLOCK
PFD/
CP
Prescaler
/2,/3,/4,/5
InputDivider
/1 - /256
SMART _MUX
SYNTH
70 kHz –
400 kHz
/1,/2,/5,/8,/10,/16,/20
/8 - /1280
FeedbackDivider
1.75 GHz –
2.356 GHz
Register 1
22
23
24
25
LoopFilterandChargePump
CurrentSettings
1
Register 1
2
3
4
5
6
7
8
InputDividerSettings
Register 1
8
9
Prescaler
11
Register 1
12
13
14
15
16
17
18
FeedbackDivider
Register 1
19
20
21
FeedbackBypassDivider
Register 1
0
VCOSelect
Input Divider
CDCE62002
SCAS882A – JUNE 2009 – REVISED JULY 2009.............................................................................................................................................................. www.ti.com
Figure 27 provides an overview of the CDCE62002 synthesizer block. The Synthesizer Block provides a Phase
Locked Loop, a partially integrated programmable loop filter, and two Voltage Controlled Oscillators (VCO). The
synthesizer block generates an output clock called “SYNTH” and drives it onto the Internal Clock Distribution
Bus.
Figure 27. CDCE62002 Synthesizer Block
The Input Divider divides the clock signal selected by the Smart Multiplexer and presents the divided signal to
the Phase Frequency Detector / Charge Pump of the frequency synthesizer.
Table 14. CDCE62002 Input Divider Settings
INPUT DIVIDER SETTINGS
DIVIDE
SELINDIV7
SELINDIV6
SELINDIV5
SELINDIV4
SELINDIV3
SELINDIV2
SELINDIV1
SELINDIV0
RATIO
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
2
0
0
0
0
0
0
1
0
3
0
0
0
0
0
0
1
1
4
0
1
0
0
0
1
0
0
5
0
1
0
0
0
1
0
1
6
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
1
1
1
1
1
1
1
1
256
32
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Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): CDCE62002



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