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Evaluation Board User Guide

UG-077

Rev. 0 | Page 7 of 16

EVALUATION SOFTWARE COMPONENTS

MAIN WINDOW

08747-

008

Figure 8. AD9522 Evaluation Software Main Window

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Summary of Contents for AD9522 Series

Page 1: ...ttenuation Clock distribution GENERAL DESCRIPTION The AD9522 x hereafter referred to as AD9522 is a very low noise PLL clock synthesizer featuring an integrated VCO clock dividers and up to 24 outputs...

Page 2: ...nfiguration Window Config PLL 8 REFMON STATUS and LD Buttons 9 Register W R Box 9 SYNC PD Power Down and RESET Buttons 9 EEPROM Control Window 9 Reference R Divider Window 9 Feedback N Divider Window...

Page 3: ...ct that signal to the J13 SMA connector DC coupling is recommended in applications requiring automatic hitless reference switching There is a possibility that the AD9522 receive buffer can chatter whe...

Page 4: ...w indicating that the evaluation board was found or red text appears indicating that the evaluation board was not found 2 If the evaluation board is found click anywhere in the pop up window with the...

Page 5: ...MODE box found at the top of the main window see Figure 8 2 Enter the intended reference input frequency in megahertz in the REF 1 MHz box at the upper left corner of the main window 3 Click the tria...

Page 6: ...modified 10 Set the VCO divider by clicking the green VCO box in the center of the main window immediately to the left of the Cal VCO button 11 Power down unused drivers by clicking the numbered tria...

Page 7: ...Evaluation Board User Guide UG 077 Rev 0 Page 7 of 16 EVALUATION SOFTWARE COMPONENTS MAIN WINDOW 08747 008 Figure 8 AD9522 Evaluation Software Main Window...

Page 8: ...Single Ended Mode check box Note that this mode should not be used simultaneously with Enable REF 1 or Enable REF 2 If Disable Switchover De Glitch is activated the AD9522 maintains the phase relation...

Page 9: ...issue an I O update command whenever registers are written to the AD9522 SYNC PD POWER DOWN AND RESET BUTTONS The SYNC PD and RESET buttons allow you to control these pins on the AD9522 Each button ha...

Page 10: ...r value For example it is not possible to use the internal VCO and a feedback divider of 30 However the R divider can be doubled which allows a feedback divider of 60 The feedback divider window has a...

Page 11: ...ow shown in Figure 19 is accessed by clicking the Cal VCO button on the main window A valid reference input signal must be present to complete VCO calibration and the VCO must be recalibrated any time...

Page 12: ...nation require ments and OUT9 through OUT11 have been terminated differently from OUT0 through OUT8 OUT0 through OUT8 are ac coupled and this termination scheme is ideal for LVDS drivers However this...

Page 13: ...a recently connected evaluation board 08747 022 Figure 25 USB Device Selection Window Configure Serial Port The I O Interface window allows you to control how the USB controller interacts with the AD9...

Page 14: ...hoice Typical phase detector frequencies for these applications are 10 MHz to 100 MHz and typical loop bandwidths for this loop filter are 50 kHz to 500 kHz depending on the configuration The user sho...

Page 15: ...Configuration A dialog box appears and acknowledges the I2 C mode and address The evaluation software starts at I2 C Address 0x058 and stops at the first valid I2 C address that it finds If the targe...

Page 16: ...set in the register setup stp file because the user normally initiates VCO calibration manually while running the evaluation software To avoid a checksum mismatch it is recommended that the user manu...

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