Analog Devices AD9551 Bedienungsanleitung

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Evaluation Board User Guide
UG-002
One Technology Way P. O. Box 9106 Norwood, MA 02062-9106, U.S.A. Te l: 781.329.4700 Fax: 781.461.3113 www.analog.com
Evaluating the AD9551 Multiservice Clock Generator
See the last page for an important warning and disclaimers. Rev. 0 | Page 1 of 12
FEATURES
Simple power connection using USB connection and
on-board LDO voltage regulators
LDOs are easily bypassed for power measurements
AC-coupled differential LVPECL SMA connectors
SMA connectors for
2 reference inputs
2 PLL lock detect outputs
Microsoft Windows®–based evaluation software
with simple graphical user interface
On-board PLL loop filter
Easy access to digital I/O and diagnostic signals
via I/O header
Status LEDs for diagnostic signals
USB computer interface
Dip switch configurable for manual operation
Software calculator provides flexibility, allowing programming
almost any rational input/output frequency ratio
GENERAL DESCRIPTION
This user guide describes the hardware and software of the
AD9551 evaluation board and includes detailed schematics and
PCB layout artwork. The AD9551 Revision D evaluation board
is a compact, easy to use platform for evaluating all features of the
AD9551 multiservice clock generator.
The AD9551 accepts one or two reference input signals to
synthesize one or two output signals. The AD9551 uses a
fractional-N PLL that precisely translates the reference frequency
to the desired output frequency. The input receivers and output
drivers provide both single-ended and differential operation.
Reference conditioning and switchover circuitry internally
synchronizes the two references so that if one reference fails,
there is virtually no phase perturbation at the output.
The AD9551 uses an external crystal and an internal DCXO to
provide for holdover operation. If both references fail, the device
maintains a steady output signal. This may mislead you to believe
that the PLL is locked and the board is configured properly. A
simple test is to move the input REF A or REF B clock a few kilo-
hertz and verify that the changes in output frequency track the input.
DIGITAL PICTURE OF THE EVALUATION BOARD
08129-001
Figure 1.
AD9551 Evaluation Board, Revision D
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Inhaltsverzeichnis

Seite 1 - Evaluation Board User Guide

Evaluation Board User GuideUG-002One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Te l: 781.329.4700 • Fax: 781.461.3113 • ww

Seite 2 - TABLE OF CONTENTS

UG-002 Evaluation Board User Guide Rev. 0 | Page 10 of 12 Feedback Window Clicking Click for Details in the Feedback Divider box of the main window a

Seite 3 - EVALUATION BOARD HARDWARE

Evaluation Board User Guide UG-002 Rev. 0 | Page 11 of 12 7. The Calculator window, shown in Figure 21, appears. 08129-022 Figure 21. Calculator Win

Seite 4 - EVALUATION BOARD SOFTWARE

UG-002 Evaluation Board User Guide Rev. 0 | Page 12 of 12 08129-026 08129-027 Figure 25. Register Debug Window Figure 26. Input PLL + DCXO Window 11.

Seite 5 - (SOFTWARE CONTROL)

UG-002 Evaluation Board User Guide Rev. 0 | Page 2 of 12 TABLE OF CONTENTS Features ...

Seite 6 - SOFTWARE OPERATION

Evaluation Board User Guide UG-002 Rev. 0 | Page 3 of 12 EVALUATION BOARD HARDWARE The following instructions are for setting up the physical connect

Seite 7 - 08129-008

UG-002 Evaluation Board User Guide Rev. 0 | Page 4 of 12 EVALUATION BOARD SOFTWARE The instructions included in this section are for setting up the A

Seite 8 - 08129-011

Evaluation Board User Guide UG-002 Rev. 0 | Page 5 of 12 GUIDE TO PROGRAMMING THE AD9551 The AD9551 can be programmed via an SPI port or by setting t

Seite 9 - 08129-016

UG-002 Evaluation Board User Guide Rev. 0 | Page 6 of 12 SOFTWARE OPERATION The main window of the AD9551 evaluation board software is comprised of s

Seite 10 - 08129-021

Evaluation Board User Guide UG-002 Rev. 0 | Page 7 of 12 MENU BAR OF MAIN WINDOW File Menu The File menu allows you to load a previously saved AD9551

Seite 11 - 08129-024

UG-002 Evaluation Board User Guide Rev. 0 | Page 8 of 12 BUTTON BAR OF MAIN WINDOW The buttons described in this section provide easy access to commo

Seite 12 - 08129-028

Evaluation Board User Guide UG-002 Rev. 0 | Page 9 of 12 DLL Window Clicking Click for Details in the DLL box of the main window accesses the DLL win

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