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Summary of Contents for Texas Instruments SCAU020
- Page 1 10.9MHz–1175MHz Low Phase Noise Clock Evaluation Board User's Guide March 2007 Serial Link Products SCAU020...
- Page 2 SCAU020 – March 2007 Submit Documentation Feedback...
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Page 3: Table Of Contents
Programming and Testing Configuration (USB Cable Attached)—Default Configuration Programming Configuration (USB Cable Attached) Testing Configuration from a Saved Configuration (with USB Cable Removed After Programming) Schematics and Layout Important Notices SCAU020 – March 2007 Submit Documentation Feedback Contents Table of Contents... - Page 4 JP1 Setting for USB Programming Configuration CDCE421EVM Block Switch Off CDCE421EVM Board Schematic CDCE421EVM Board—Block A Schematic CDCE421EVM Board—Block B Schematic CDCE421EVM Board—Block C Schematic CDCE421EVM Board—Block D Schematic List of Figures List of Figures SCAU020 – March 2007 Submit Documentation Feedback...
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Page 5: General Description
For optimum performance, the board is equipped with 50 impedance microstrip transmission lines. Windows, Windows XP are registered trademarks of Microsoft Corporation. All other trademarks are the property of their respective owners. SCAU020 – March 2007 Submit Documentation Feedback Figure 1 illustrates the CDCE421EVM. -
Page 6: Signal Path And Control Circuitry
In LVDS mode, the device can achieve up to 500MHz output. In LVPECL mode, the device can achieve 1175MHz output. The output signaling level and LVPECL termination are selectable through the software interface. Figure 2. CDCE421EVM Programming Blocks 10.9MHz–1175MHz Low Phase Noise Clock Evaluation Board www.ti.com Figure 2. The SCAU020 – March 2007 Submit Documentation Feedback... -
Page 7: Programming
Note that the CDCE421 does have a permanent EEPROM lock mode. When this mode is selected, the embedded EEPROM in the CDCE421 cannot be changed. This mode is useful when setting final configurations. SCAU020 – March 2007 Submit Documentation Feedback Pletronics. -
Page 8: Installing The Software Gui And Usb Driver
Note the program file location; the USB controller driver is in the same location. 10.9MHz–1175MHz Low Phase Noise Clock Evaluation Board ® Figure Figure 3. Software Installation Screen Figure 4. Installation Prompt www.ti.com ® 2000 operating SCAU020 – March 2007 Submit Documentation Feedback... -
Page 9: Chronosgui
Device_EEPROM drop-down menu at the top of the software GUI. A menu item labeled Save Block B–XTAL Freq to EEPROM appears; this menu item must be selected. The crystal SCAU020 – March 2007 Submit Documentation Feedback Figure 5. -
Page 10: Chronos Gui-Loop Filter Configuration Pop-Up
EEPROM (No locking) and Write settings to EEPROM (Locking). Choose the appropriate option after setting the desired PLL configurations to write to the EEPROM in its appropriate mode. 10.9MHz–1175MHz Low Phase Noise Clock Evaluation Board www.ti.com SCAU020 – March 2007 Submit Documentation Feedback... -
Page 11: Manual Pll Block Selection (Advanced Control)
PLL. If a user is familiar with PLL operation, one may activate individual control of the PLL blocks by clicking on the Advanced Control button, activating the window shown in Figure 7. Chronos GUI—Manual PLL Block Selection Pop-Up SCAU020 – March 2007 Submit Documentation Feedback Figure 10.9MHz–1175MHz Low Phase Noise Clock Evaluation Board... - Page 12 A bright red light indicates that USB is not connected or not communicating properly. A green light indicates that a proper USB connection exists. www.ti.com for VCO tuning ranges. to determine to determine the Figure 6 Figure 7 Figure 6 Figure 7 SCAU020 – March 2007 Submit Documentation Feedback...
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Page 13: Configuring The Board
9). The power line switch for the respective block, however, should remain on. This sequence also allows the user to remove the USB cable without affecting performance while the CDCE421 is powered on. SCAU020 – March 2007 Submit Documentation Feedback as explained earlier. -
Page 14: Schematics And Layout
CDCE421EVM PCBs. 10.9MHz–1175MHz Low Phase Noise Clock Evaluation Board Figure 9. CDCE421EVM Block Switch Off show the printed circuit board (PCB) schematics. www.ti.com SCAU020 – March 2007 Submit Documentation Feedback... -
Page 15: Cdce421Evm Board Schematic
Schematics and Layout Figure 10. CDCE421EVM Board Schematic SCAU020 – March 2007 10.9MHz–1175MHz Low Phase Noise Clock Evaluation Board Submit Documentation Feedback... -
Page 16: Cdce421Evm Board-Block A Schematic
Schematics and Layout Figure 11. CDCE421EVM Board—Block A Schematic 10.9MHz–1175MHz Low Phase Noise Clock Evaluation Board SCAU020 – March 2007 Submit Documentation Feedback... -
Page 17: Cdce421Evm Board-Block B Schematic
Schematics and Layout Figure 12. CDCE421EVM Board—Block B Schematic SCAU020 – March 2007 10.9MHz–1175MHz Low Phase Noise Clock Evaluation Board Submit Documentation Feedback... -
Page 18: Cdce421Evm Board-Block C Schematic
Schematics and Layout Figure 13. CDCE421EVM Board—Block C Schematic 10.9MHz–1175MHz Low Phase Noise Clock Evaluation Board SCAU020 – March 2007 Submit Documentation Feedback... -
Page 19: Cdce421Evm Board-Block D Schematic
Schematics and Layout Figure 14. CDCE421EVM Board—Block D Schematic SCAU020 – March 2007 10.9MHz–1175MHz Low Phase Noise Clock Evaluation Board Submit Documentation Feedback... -
Page 20: Evaluation Board/Kit Important Notice
EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards. -
Page 21: Important Notice
TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products Amplifiers amplifier.ti.com...
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