CY3676
Evaluation Kit User Guide
Doc No. 002-11165 Rev. *A
Cypress Semiconductor
198 Champion Court
San Jose, CA95134-1709
Phone (USA): 800.858.1810
Phone (Intnl): +1.408.943.2600
www.cypress.com
Copyrights
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 2
Copyrights
© Cypress Semiconductor Corporation, 2016. This document is the property of Cypress Semiconductor Corporation and its
subsidiaries, including Spansion LLC (“Cypress”). This document, including any software or firmware included or referenced
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stated in this paragraph, grant any license under its patents, copyrights, trademarks, or other intellectual property rights. If
the Software is not accompanied by a license agreement and you do not otherwise have a written agreement with Cypress
governing the use of the Software, then Cypress hereby grants you a personal, non-exclusive, nontransferable license
(without the right to sublicense) (1) under its copyright rights in the Software (a) for Software provided in source code form,
to modify and reproduce the Software solely for use with Cypress hardware products, only internally within your organization,
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infringed by the Software (as provided by Cypress, unmodified) to make, use, distribute, and import the Software solely for
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CY3676 Evaluation Kit Guide, Doc. No. 002-11165 Rev. *A 3
Contents
Safety Information .................................................................................................................................................................. 5
1 Introduction .................................................................................................................................................................... 6
1.1 CY3676 EVK Contents .......................................................................................................................................... 6
1.2 Getting Started ...................................................................................................................................................... 7
1.3 Additional Learning Resources .............................................................................................................................. 7
1.4 Technical Support .................................................................................................................................................. 7
1.5 Document Conventions ......................................................................................................................................... 7
1.6 Acronyms............................................................................................................................................................... 8
2 Software Installation ..................................................................................................................................................... 9
2.1 Before You Begin .................................................................................................................................................. 9
2.2 Install Software ...................................................................................................................................................... 9
2.3 Install Hardware ................................................................................................................................................... 12
2.4 Uninstall Software ................................................................................................................................................ 12
3 Kit Operation ................................................................................................................................................................ 13
3.1 Theory of Operation ............................................................................................................................................. 13
3.2 Functional Description ......................................................................................................................................... 14
3.3 CY3676 EVK USB Connection ............................................................................................................................ 14
3.4 Programming the CY29412 ................................................................................................................................. 15
3.5 Functional Programming of the CY29412 ............................................................................................................ 15
3.5.1 Generating and Programming the Device Configuration Profile ............................................................. 16
3.6 eFuse Programming of the CY29412 .................................................................................................................. 19
3.7 Custom Profile Generation .................................................................................................................................. 20
4 Hardware ...................................................................................................................................................................... 21
4.1 Board Overview ................................................................................................................................................... 21
4.2 Board Details ....................................................................................................................................................... 23
4.2.1 Default Jumper Settings ......................................................................................................................... 23
4.2.2 Power Settings........................................................................................................................................ 23
4.2.3 Functional Programming ......................................................................................................................... 23
4.2.4 LED Indicators ........................................................................................................................................ 24
4.3 Evaluating Different I/O Standards Using the CY3676 EVK ................................................................................ 24
5 Example Projects ......................................................................................................................................................... 26
A. Appendix ...................................................................................................................................................................... 29
A.1. Termination Settings of Differential Clock Outputs .............................................................................................. 29
A.2. Schematics .......................................................................................................................................................... 30
A.3. Fabrication Drawing ............................................................................................................................................. 34
Contents
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 4
A.4. Bill of Materials .................................................................................................................................................... 35
Revision History ................................................................................................................................................................... 38
Document Revision History ........................................................................................................................................... 38
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 5
Safety Information
The CY3676 Evaluation Kit is intended for use as an evaluation platform for hardware or software in a laboratory environment.
The board is an open system design, which does not include a shielded enclosure, so the board may cause interference to
other electrical or electronic devices in close proximity. In a domestic environment, this product may cause radio interference.
In such cases, the user may be required to take adequate preventive measures. Also, this board should not be used near any
medical equipment or RF devices.
Attaching additional wiring to this product or modifying the product operation from the factory default may affect its
performance and cause interference with other apparatus in the immediate vicinity. If such interference is detected, suitable
mitigating measures should be taken.
The CY3676 Evaluation Kit contains electrostatic discharge (ESD)-sensitive devices. Electrostatic
charges readily accumulate on the human body and any equipment, and can discharge without detection.
Permanent damage may occur on devices subjected to high-energy discharges. Proper ESD precautions
are recommended to avoid performance degradation or loss of functionality. Store unused CY3676
Evaluation Kit boards in the protective shipping package.
General Safety Instructions
ESD Protection
ESD can damage boards and associated components. Cypress recommends that the user perform procedures only at an
ESD workstation. If ESD workstation is not available, use appropriate ESD protection by wearing an antistatic wrist strap
attached to the chassis ground (any unpainted metal surface) on the board when handling parts.
Handling Boards
CY3676 Evaluation Kit is sensitive to ESD. Hold the board only by its edges. After removing the board from its box, place it
on a grounded, static free surface. Use a conductive foam pad if available. Do not slide board over any surface.
Certification Disclaimer
This kit is intended for demonstration, evaluation or development purposes only and is not considered by Cypress
Semiconductor to be a finished end-product fit for general consumer use. It generates and can radiate radio frequency energy
and has not been specifically tested for CE certification compliance. Operation of this equipment in other environments may
cause interference with radio communications, in which case the user at their own expense will be required to take whatever
measures may be required to correct this interference.
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 6
1 Introduction
Thank you for your interest in the CY3676 Evaluation Kit (EVK). The CY3676 EVK is designed to enable you to evaluate the
programmable clock device CY29412, the latest addition to programmable devices in Cypress’s timing product portfolio. The
CY29412 is a high performance programmable oscillator with one fractional PLL that generates any frequency up to 2.1 GHz
with jitter as low as 110 fs. The device offers one differential output. The CY29412 comes in an 8-pin LCC package for
industrial applications. The differential I/O standards supported are LVDS, LVPECL, High-Speed Current Steering Logic
(HCSL) and Current Mode Logic (CML). The device also supports features like a Voltage-Controlled Crystal Oscillator
(VCXO), and provides the user with an I2C programming interface.
The CY3676 EVK allows you to evaluate both AC and DC parameters of the output signals by making required on-board
termination settings.
The CY3676 EVK is available through the Cypress Online Store or through our distributors.
1.1 CY3676 EVK Contents
The CY3676 EVK includes the following:
CY3676 Evaluation Board
USB Standard-A to Mini-B cable
Quick Start Guide
Figure 1-1. CY3676 Kit Contents
Inspect the contents of the kit. If you find any part missing, contact your nearest Cypress sales office for assistance:
www.cypress.com/support.
Introduction
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1.2 Getting Started
To learn the solution quickly and apply it to your design, refer to the CY3676 Quick Start Guide inside the kit box or in the
Installation directory. The default location for the kit documents is:
<Install_Directory>\CY3676 Evaluation Kit\<version>\Documentation
This guide will help you get acquainted with the CY3676 EVK:
The Software Installation chapter describes the installation of the kit software.
The Kit Operation chapter describes the major features of CY3676 Evaluation Kit.
The Hardware chapter describes the hardware content of the CY3676 Evaluation Kit and the hardware operation.
The Example Projects chapter describes the multiple projects that will help you understand how to evaluate different
supported output standards on this kit.
The Appendix captures DC/AC Measurements of Clock Outputs, Schematics, Fab Drawing, and the bill of materials (BOM).
1.3 Additional Learning Resources
Visit www.cypress.com/CY3676 and www.cypress.com/HPO for additional learning resources including datasheets and
application notes.
1.4 Technical Support
For assistance, go to: www.cypress.com/support, or contact our customer support at +1(800) 541-4736 Ext. 2 (in the USA),
or +1 (408) 943-2600 Ext. 2 (International).
1.5 Document Conventions
Table 1-1. Document Conventions for Guides
Convention
Usage
Courier New
Displays file locations, user entered text, and source code:
C:\ ...cd\icc\
Italics
Displays file names and reference documentation.
[Bracketed, Bold]
Displays keyboard commands in procedures:
[Enter] or [Ctrl] [C]
File > Open
Represents menu paths:
File > Open > New Project
Bold
Displays commands, menu paths and icon names in procedures:
Click the File icon and then click Open.
Times New Roman
Displays an equation:
2 + 2 = 4
Text in gray boxes
Describes Cautions or unique functionality of the product.
Introduction
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1.6 Acronyms
Table 1-2. List of Acronyms used in this Document
Acronym
BOM
CML
DNP, DNM
HCSL
I2C
JEDEC
LDO
LVPECL
LVPECL2
LVDS
OE
SMA
VCXO
OTP
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2 Software Installation
This chapter describes the steps to install the software tools and packages on a PC for using the CY3676 Evaluation Kit.
2.1 Before You Begin
All Cypress software installations require administrator privileges. Ensure that you have the required privileges on the system
for successful installation. Before you install the kit software, close any other Cypress software that is currently running.
2.2 Install Software
Follow these steps to install the CY3676 Evaluation Kit software:
1. Download the CY3676 Evaluation Kit software from www.cypress.com/CY3676. The software is available in the following
formats:
a. CY3676 Evaluation Kit Complete Setup: This installation package contains the files related to the CY3676
Evaluation Kit. However, it does not include the Windows Installer or Microsoft .NET Framework packages. If these
packages are not available on your computer, the installer directs you to download and install them from the Internet.
b. CY3676 Evaluation Kit Only: This executable file installs only the CY3676 EVK contents, which include example
projects, hardware files, and user documents. This package can be used if all the software prerequisites (listed in
step 4) are installed on your PC.
c. CY3676 Evaluation Kit ISO: This file is a complete package, stored in a CD/DVD-ROM image format that you can
use to create a CD/DVD or extract using an ISO extraction program such as WinZip or WinRAR. The file can also
be mounted similar to a virtual CD/DVD using virtual drive programs such as Virtual CloneDrive and MagicISO. This
file includes all the required software, utilities, drivers, hardware files, and user documents.
2. If you have downloaded the ISO file, mount it on a virtual drive. If you do not have a virtual drive to mount, extract the
ISO contents using the appropriate ISO extractor (such as MagicISO or PowerISO). Double-click cyautorun.exe in the
root directory of the extracted content or the mounted ISO if the “Autorun from CD/DVD” option is not enabled on the PC.
The installation window will appear automatically.
Note: If you are using the “Kit Complete Setup” or “Kit Only” file, then go to step 4 for installation.
3. Click Install CY3676 EVK to start the installation as shown in Figure 2-1.
Software Installation
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Figure 2-1. Installer Screen
4. Click Change… if you want to install the CY3676 EVK in a location other than the default, and then click Next as shown
in Figure 2-2.
Note: When you click Next, the CY3676 EVK installer automatically installs the required software, if it is not present on
your computer. The pre-requisites are ClockWizard 2.1 and PSoC Programmer 3.25.0 or later.
Figure 2-2. InstallShield Wizard
Software Installation
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5. Select the Installation Type (see Figure 2-3). The drop-down menu contains three options: Typical (installs all the
required features), Custom (lets you choose the features to be installed), and Complete (installs all the contents). Click
Next after you select the Installation Type.
Note: It is recommended that you choose the Typical Installation Type.
Figure 2-3. Product Installation Overview
6. Read and accept the End-User License Agreement, and then click Next.
When the installation begins, a list of packages appears on the Installation page. A green check mark appears next to
each package after successful installation.
7. Enter your contact information or select the Continue Without Contact Information check box.
8. Click Finish to complete the CY3676 EVK installation.
After the installation is complete, the kit contents are available in the following location:
<Install_Directory>\CY3676 Evaluation Kit\<version>.
Default location:
Windows 7 (64-bit): C:\Program Files (x86)\Cypress\CY3676 Evaluation Kit
Windows 7 (32-bit): C:\Program Files\Cypress\CY3676 Evaluation Kit
Software Installation
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2.3 Install Hardware
No additional hardware installation is required for this kit.
2.4 Uninstall Software
You can uninstall the software using one of the following methods:
Go to Start > All Programs > Cypress > Cypress Update Manager > Cypress Update Manager, and select the
specific software package. Click the Uninstall button.
Go to Start > Control Panel > Programs and Features, and select the specific software package. Click the
Uninstall/Change button.
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3 Kit Operation
The CY3676 EVK can be used to evaluate the CY29412, a high performance programmable oscillator. Connect the CY3676
kit through a USB cable to a PC running Cypress’s ClockWizard 2.1 software. The clock device CY29412 can be configured
and programmed to generate frequencies with best-in-class performance.
3.1 Theory of Operation
The CY3676 EVK offers one differential clock output for evaluation. The CY29412 device is available with a crystal embedded
inside the package. There is no requirement for an external clock source or on-board crystal for this kit.
The kit is capable of generating fixed 3.3 V, 2.5 V, and 1.8 V voltages from a 5 V USB port. The on-board PSoC 5LP (U7)
performs USB-to-I2C conversion. There is one power LED (LED2) driven from the 5 V USB supply and one status LED (LED1)
controlled by the PSoC 5LP. The output of the LDO regulator (U8) is configurable (3.3 V, 2.5 V, or 1.8 V) through jumper J13.
Note: An additional on-board LDO (U9 – not shown here) generates a fixed 3.3 V supply for the PSoC 5LP in the CY3676
Rev ** EVK. This feature has been changed in CY3676 Rev *A EVK where the PSoC 5LP is directly powered by 5V USB
supply. The CY3676 kit revision is printed on the label at the back of the kit box.
Figure 3-1 illustrates the block diagram of the CY3676 EVK.
Figure 3-1. CY3676 EVK Block Diagram
Kit Operation
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3.2 Functional Description
The differential clock outputs (J6, J7) are driven out on to SMA connectors. The EVK is populated with 50 resistors (R30
and R31) for output termination. The termination options of the differential outputs in the evaluation board are listed in the
Hardware chapter. These termination circuits are designed to terminate the output clocks in LVPECL, LVDS, HCSL,
LVPECL2, and CML signal types by populating, or by not populating the J5 jumper shunt.
Figure 3-2 illustrates the top and bottom view of the CY3676 EVK.
Figure 3-2. CY3676 EVK (Top View, Bottom View)
CY3676 EVK Top View CY3676 EVK Bottom View
3.3 CY3676 EVK USB Connection
The clock device CY29412 on the kit is not loaded with any default configuration. To view and evaluate different configurations
on an oscilloscope (or other standard instruments), the clock device must be programmed with the desired configuration. The
ClockWizard 2.1 application is required for programming any configuration. Therefore, the kit should be connected
(see Figure 3-3) to the PC through the USB connection for programming.
Figure 3-3. Kit Connected through USB
Kit Operation
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The kit enumerates as a USB Composite Device as part of the Driver Software Installation on Windows.
Figure 3-4. USB Driver Installation
After the driver installation is complete, the device is ready to use.
Figure 3-5. USB Driver Installation Complete
3.4 Programming the CY29412
The CY29412 device has internal one-time programmable (OTP) nonvolatile memory called eFuse. The device also contains
volatile memory that stores an exact copy of the eFuse at the release of reset at power up. The output frequency depends on
the configurations in the volatile memory. Writing the entire device configuration in the volatile memory section of a blank
device after power up is called Functional Programming. The CY3676 kit is shipped with a blank CY29412 device. This kit
can be used to check both the Functional and eFuse Programming of the device using ClockWizard 2.1. See Functional
Programming of the CY29412 and eFuse Programming of the CY29412 for details.
3.5 Functional Programming of the CY29412
ClockWizard 2.1 is used for functional programming of the CY29412. A configuration created in ClockWizard 2.1 can be
downloaded to the volatile memory section of the device.
The example ClockWizard 2.1 projects can be found at the following location:
<Install_Directory>\CY3676 Evaluation Kit\<version>\Firmware\Example Projects
Configuration profiles generated from these projects can be used to evaluate the CY29412 device on the CY3676 EVK. Refer
to Functional Programming for the kit’s hardware settings prior to programming. It is recommended that you copy the example
projects to another location if you want to make any modifications to the settings so that the default project is retained in the
installation directory.
CAUTION
Before programming the CY3676 EVK through ClockWizard 2.1, it is recommended to go through
the Hardware section of this user guide. The mismatch between the hardware settings and the
ClockWizard 2.1 configuration may cause potential damage of the EVK. Specifically, the voltage
setting on the kit selected with J13 must match the voltage setting within the configuration to be
programmed.
Kit Operation
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3.5.1 Generating and Programming the Device Configuration Profile
The ClockWizard 2.1 is used to generate profiles and to perform functional programming of the device.
1. Verify that the power supply voltage jumper is set for the voltage used in the project that you intend to program. See the
Hardware section for details.
2. Connect the CY3676 EVK to your PC through the supplied USB cable.
3. To launch the ClockWizard 2.1 application, go to Start > All Programs > Cypress > ClockWizard 2.1.
The workspace files are located in the Workspace folders. The four workspaces available are:
CY3676_LVPECL_3p3_156p25.cpj
CY3676_LVDS_2p5_50.cpj
CY3676_HCSL_2p5_100.cpj
CY3676_HCSL_1p8_156p25.cpj
4. Select the File menu in ClockWizard 2.1, select Open workspace, browse the required workspace file with a .cpj
extension, and then click Open. Each Workspace file can contain multiple projects.
5. Click Configure, as shown in Figure 3-6.
6. Click the Generate button. This will generate the JEDEC file for the configuration selected. The various configuration
parameters appear on the right panel of the block diagram in the tabbed interface. For more information on configuration
parameters, refer to the ClockWizard 2.1 User Guide located in Help > User guide of the ClockWizard 2.1 software.
Figure 3-6. Generating a Configuration Profile using ClockWizard 2.1
7. Click Results to view the results generated from this configuration as shown in Figure 3-7.
Kit Operation
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Figure 3-7. View Results Generated from the Configuration Profile using ClockWizard 2.1
8. To program the CY29412 device, select Program in the left navigation pane, as shown in Figure 3-8. Choose the
appropriate device in the Select Device (I2C Master) drop-down list prior to programming, and then click the Functional
Program button. This will program the device directly from ClockWizard. LED1 blinks to indicate that the device is being
programmed.
For more information, refer to the ClockWizard 2.1 User Guide located in Help > User guide of the ClockWizard 2.1
software.
Figure 3-8. Programming Configuration Profile using ClockWizard 2.1
Kit Operation
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9. Executing the Functional Program operation will download the device configuration to the volatile memory. The required
output will appear on the oscilloscope.
10. After functional programming the frequency values of the current .cpj are displayed in the Profile 0 (MHz) field (see
Figure 3-9). You can change the frequency in this field. To make the changes effective, click Large change update. The
expected output frequency will appear on the oscilloscope.
Note: Large change programming refers to the case where the frequency is changing more than ±500 ppm.
Figure 3-9. Evaluation of Other Frequencies through Large Change Update
11. If you want to change the frequency less than ±500 ppm, fill in the desired ppm in the Small change (ppm) field, and
click on Small change update. An example is shown in Figure 3-10.
Figure 3-10. Evaluation of Other Frequencies through Small Change Update
Kit Operation
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3.6 eFuse Programming of the CY29412
After functional programming and evaluation of different clock configurations, the user may choose to write the configuration
to the non-volatile memory section of the device. The non-volatile memory of the CY29412 is a one-time programmable (OTP)
eFuse. Any configuration after functional evaluation can permanently be written to the eFuse of the device. See Figure 3-11
for the programming procedure.
Configure the device supply to 2.5 V before starting the eFuse programming. Table 4-2 provides the hardware configuration
(J13 settings) of CY3676 for setting the device supply to 2.5 V.
Figure 3-11. eFuse Programming using ClockWizard 2.1
CAUTION
Evaluate the configuration via functional programming prior to writing a configuration to the
eFuse. The configuration cannot be modified or erased once it is written to the eFuse.
The CY29412 supply must be set to 2.5 V for eFuse programming. Setting the CY29412 supply to
any other voltage during eFuse programming will cause potential damage of the device.
After the device is eFuse programmed, the user can change the output frequency through the following ways. Note that these
changes will revert after a power cycle.
Large change programming: Large change programming refers to the case where the frequency is changing more than
±500 ppm. Enter the desired frequency in the Profile 0 (MHz) field, and click on Large change update. The device will
recalibrate and reconfigure the internal circuit and the output will change to the desired frequency.
Small change programming: Small change programming refers to the case where the frequency is changing less than
±500 ppm. Enter the desired ppm in the Small change (ppm) field, and click on Small change update. The device will
recalibrate and reconfigure the internal circuit and the output will change to the desired frequency.
Kit Operation
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CAUTION
It is recommended that you do not perform any Large change programming operation while
performing Small change programming evaluation. In addition, you should not perform multiple
Small change programming operations while evaluating Small change programming.
Follow one of these prior to performing Small change programming:
Click the Functional Program button if the device is not eFuse-programmed.
Apply power cycle if the device is eFuse programmed.
3.7 Custom Profile Generation
ClockWizard 2.1 should be used to generate custom configuration profiles. For details on how to create custom profiles, refer
to the ClockWizard 2.1 User Guide located in Help > User guide of the ClockWizard 2.1 software.
To understand the output termination settings of different output standards (for example: LVPECL, HCSL, LVDS, or CML),
refer to the A.1. Termination Settings of Differential Clock Outputs section.
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4 Hardware
4.1 Board Overview
The CY3676 EVK is used for evaluating the CY29412 device.
Following are the key features of the CY3676 EVK:
Powered from a USB port
Jumper to configure on-board LDO output
Jumper to short or isolate external connection for termination settings
Figure 4-1 illustrates the CY3676 EVK with a markup of the on-board components.
Figure 4-1. CY3676 EVK On-board Components
Note: * Components are on the bottom-side of the Evaluation Board.
Hardware
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Table 4-1: CY3676 EVK Onboard Components Description
Label Name
Description
CY29412FLXI
CY29412FLXI is the Cypress clock chip that is evaluated with the CY3676 EVK.
Main Power Supply Jumper (J1)
Short pin 1 and 2 of jumper J1 to power up the CY29412. The core supply and I/O supply are the
same for the device.
LDO Settings Jumper (J13)
Set the J13 jumper settings as per Table 4-2 to set the LDO output voltage.
Note: The brightness of LED2 will vary depending on the voltage selection. It will be brightest at
3.3 V and dimmest at 1.8 V.
USB Mini-B Connector
Connect the kit to a PC using the USB Standard-A to Mini-B cable.
VCXO Input (J2)
This jumper can be used to evaluate the VCXO operation of the CY29412 device. Vc (voltage at
J2.1 pin) is by default set to 0 V via a jumper shunt. You can remove the shunt and instead apply
an external power supply voltage (DC) to pin J2.1 to evaluate the VCXO operation.
Cypress recommends that you contact our Technical Support team at www.cypress.com/support
before connecting any external power supply to this jumper.
Status LED
This LED (LED1) turns ON after the USB enumeration is completed. This LED blinks during
programming of the CY29412 device from a PC.
PSoC 5LP (CY8C5868LTI-LP039)
On-board PSoC 5LP device that converts the USB data-stream to I2C format to program the
CY29412 device.
OE Control (J16)
Jumper to set the OE input of the CY29412 to enable or disable the clock output.
Differential Clock Output
Connect SMA cables to the SMA connectors (J6 and J7) on one end and to an oscilloscope on the
other end.
Termination Jumper (J5)
The board has an on-board jumper (J5) to connect and disconnect output termination.
Power LED
This LED (LED2) turns ON when the CY29412 device is powered.
Table 4-2: J13 Jumper Settings
J13 Settings
LDO Output Voltage (Supply of CY29412)
Short pin 1 and 2
2.5 V
Short pin 2 and 3 (default)
3.3 V
Open
1.8 V
CAUTION
The kit should strictly be operated from a USB supply by connecting to a PC.
The PCB should not be powered by any external source. Application of an external power source
to any of the jumper pins or test points will cause potential damage of the PCB.
To configure the device to a clock standard other than those specified in the example projects, or
to apply a custom termination voltage, go to our support www.cypress.com/support web page, or
e-mail at clocks@cypress.com.
Incorrect application of supply or termination voltage will cause performance degradation of the
clock output. Prolonged incorrect operation may permanently damage the kit.
Hardware
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 23
4.2 Board Details
4.2.1 Default Jumper Settings
The CY3676 EVK comes with default jumper settings that set the I/O and core supply voltages as 3.3 V.
Table 4-3 lists the default jumper settings.
Table 4-3: Default Jumper Settings on the Kit
Jumper
Default Settings
Selection
J1
Pin 1 and 2 are shorted
Power on CY29412.
J2
Pin 1 and 2 are shorted
VCXO input set to 0 V.
J5
Pin 1 and 2 are shorted
CY29412 output termination voltage set to 0 V through the 50 Ω termination resistors.
J13
Pin 2 and 3 are shorted
3.3 V selected for CY29412.
J16
Pin 2 and 3 are shorted
OE pin set to 0 V (logic ‘0’).
4.2.2 Power Settings
The only power option of this EVK is 5V that comes from a USB port. The device has the same core and I/O supply voltage.
The supply voltage of the device can be selected from on-board generated supplies of 1.8 V, 2.5 V, or 3.3 V.
Table 4-2 lists the hardware settings required for power selection.
CAUTION
The J13 selection must match with the software configuration of the supply voltage. Mismatch
between the J13 setting and ClockWizard 2.1 setting may cause incorrect output or reliability
problems with the device.
4.2.3 Functional Programming
The board should be connected to a PC through a USB connector to configure and program the device. Refer to the CY3676
EVK USB Connection section to learn how to connect the kit to a PC.
Figure 4-2 illustrates the programming section of the kit.
Figure 4-2. Programming the CY29412 Device
The USB interface provides a 5 V power supply. The PSoC 5LP converts the JEDEC profiles into an I2C-compatible format,
which is then loaded into the CY29412 clock device.
Note: During functional programming, set the power supply of the CY29412 device (hardware settings) the same as in the
ClockWizard 2.1 configuration (software settings). Table 4-2 provides the supply settings for CY29412. During eFuse
programming, set the power supply of the CY29412 to 2.5V.
The Example Projects section provides the examples projects (.cpj files) created in ClockWizard 2.1.
Hardware
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 24
4.2.4 LED Indicators
Table 4-4: LED Indicators
LED
Label
Indicator
Description
LED1
USB_PWR_LED
USB Power and
Status Indicator
This LED turns ON when the kit is connected to the USB port on a PC using the cable
provided.
If this LED does not turn ON, it indicates that the USB enumeration of the kit did not
happen with the host PC. This LED blinks continuously when the device is being
programmed through the PSoC 5LP device.
Note: This LED may glow with low intensity under the following condition:
The CY29412 supply is disconnected through jumper J1. This low-intensity LED glow
may be misleading to the user on the status of the USB connection to the board. It
is, therefore, recommended to avoid this condition during usage of the kit.
LED2
POWER_LED
Clock Device
Power
This LED turns ON when the core of the CY29412 device is powered. Ensure that a
jumper shunt is populated or not populated on J13 as per Table 4-2 for proper supply
of the CY29412.
The intensity of the LED for 1.8 V is lower when compared to 2.5 V and 3.3 V.
4.3 Evaluating Different I/O Standards Using the CY3676 EVK
The CY29412 device has one differential clock output pair (CLOCK P and CLOCK N). The onboard components of the
CY3676 outputs can be configured to different settings for evaluating different clock standards.
Figure 4-3 and Table 4-5 provide the on-board components related to CY29412 output clocks.
Figure 4-3. CY3676 Output Termination Settings
Table 4-5: CY29412 Clock Outputs
Clock Output
CY29412 Pin
SMA Connector on CY3676
Resistor to Set Termination (50 )
CLOCK P
5
J7
R30
CLOCK N
4
J6
R31
The CY29412 device supports LVPECL, LVDS, HCSL, and CML differential output types. R30 and R31 are the output
termination resistors. The termination settings are controlled by the J5 jumper shunt. The typical laboratory setup for the
evaluation of this kit is shown in Figure 4-4.
Three on-board
components J5, R30, and
R31 set termination of
CLOCK N and CLOCK P
Hardware
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 25
See Table 4-6 to set correct on-board termination option of CLOCK P and CLOCK N.
Table 4-6: J5 Jumper Settings to Terminate Differential Clock Outputs
IO Standard
J5 Jumper Position
Description
LVPECL, HCSL
Short
CLOCK P and CLOCK N termination voltage set to 0 V through the 50 Ω termination
resistors.
LVDS
Open
100 differential impedance between the CLOCK P and CLOCK N.
CAUTION
If the user wants to configure this kit to any other mode, or any other termination setup, it is
recommended to contact our support through the www.cypress.com/support web page, or e-
mail at clocks@cypress.com.
J5 should not be powered by any external source. Connection of external power source may
damage the EVK.
Figure 4-4. CY3676 EVK Connected to Oscilloscope
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 26
5 Example Projects
The CY3676 EVK can be evaluated using example projects that configure the device with different output types and
frequencies. Each example project corresponds to a particular device configuration. This section provides the configuration
details of each example project. The configurations generated from the example projects need to be downloaded to the device
and to be evaluated with on-board termination options. All the example projects are located at:
<Install_Directory>\CY3676 Evaluation Kit\<version>\Firmware\Example Projects
The device is not loaded with any default configuration. To evaluate the example projects, follow the steps described in the
Programming the CY29412 section and refer to the Hardware and Software settings provided in Table 5-1 for programming
and evaluation.
Table 5-1: Example Projects Details
Software Configurations
Hardware Settings
Evaluation in Oscilloscope
Example Projects
I/O Type
VDD
J13
Jumper
Position
J5
Jumper
Position
Setup
Output
Frequency
(MHz)
Expected
Peak-to-
Peak Voltage
(mV)
CY3676_LVPECL_3p3_156p25.cpj
LVPECL
3.3V
2 and 3
Short
Connect SMA
cables to J6 and
J7, and connect
the other ends to
an oscilloscope.
156.25
375 to 450
CY3676_HCSL_2p5_100.cpj
HCSL
2.5V
1 and 2
Short
100
375 to 430
CY3676_LVDS_2p5_50.cpj
LVDS
2.5V
1 and 2
Open
50
40 to 50
CY3676_HCSL_1p8_156p25.cpj
HCSL
1.8V
Open
Short
156.25
340 to 400
The peak-to-peak voltage provided in Table 5-1 will vary with different types of oscilloscope probes, scope-termination, and
type of coupling used during measurement. These measurements are done using an 8 GHz oscilloscope, SMA cables, 50-Ω
scope termination, and DC coupling. Sample example project outputs are shown in Figure 5-1 through Figure 5-4.
Figure 5-1. LVPECL 3.3 V, 156.25 MHz Clock Measured with DC Coupling, 50-Ω Scope Termination
Example Projects
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 27
Figure 5-2. HCSL 2.5 V, 100 MHz Clock Measured with DC Coupling, 50-Ω Scope Termination
Figure 5-3. LVDS 2.5 V, 50 MHz Clock Measured with DC Coupling, 50-Ω Scope Termination
Example Projects
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 28
Figure 5-4. HCSL 1.8 V, 156.25 MHz Clock Measured with DC Coupling, 50-Ω Scope Termination
The example projects provide instruction guidelines for the three I/O standards (HCSL, LVPECL, and LVDS). Other than
these I/O standards, the CY29412 supports other standards such as CML and LVPECL2. Evaluation of these two standards
need additional laboratory setup and oscilloscope adjustments. Cypress recommends that you contact Cypress Technical
Support through www.cypress.com/support web page, or e-mail at clocks@cypress.com if you are evaluating CML, or
LVPECL2 I/O standard or want to use different coupling, or any other termination voltage that is not part of these example
projects.
Any of the four example projects provided in this document, or a project created by the user can be permanently programmed
to the eFuse section of the device. Refer to the eFuse Programming of the CY29412 section for required guidelines on using
this feature.
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 29
A. Appendix
A.1. Termination Settings of Differential Clock Outputs
The CY29412 device supports four high-speed differential I/O standards.
Figure A-1 illustrates industry standard termination techniques for reference.
Figure A-1. Recommended Termination Scheme for DC/AC Measurements
The desired output measurement can be done using an SMA cable connected to an oscilloscope. SMA offers an extra 50
to the oscilloscope ground, which should be taken into account while doing measurements. This kit does not have any on-
board series termination or AC coupling options. Cypress recommends contacting Cypress Technical Support through
www.cypress.com/support web page, or e-mail at clocks@cypress.com, if you want to evaluate any output with series
termination or with AC coupling.
Appendix
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 30
A.2. Schematics
Figure A-2. Sheet 1 – Block Diagram
Appendix
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 31
Figure A-3. Sheet 2 – Power Supply Design and LED Indicators
Appendix
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 32
Figure A-4. Controller Schematics
Appendix
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 33
Figure A-5. Schematics – CY29412
Appendix
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 34
A.3. Fabrication Drawing
Figure A-6. Fabrication Drawing
Appendix
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 35
A.4. Bill of Materials
Table A-1. Bill of Materials
Item
Quantity
Reference
Value
Description
Manufacturer
Manufacturing
Part Number
1
1
C6
0.01 UF
CAP CER 10000PF 50V 10%
X7R 0603
Murata Electronics
GRM188R71H103KA01D
2
2
C7,C10
4.7uF
CAP CER 4.7UF 6.3V X5R
0603
Murata Electronics
GRM188R60J475KE19D
3
15
C8,C9,C27,C38,C41,
C46,C49,C53,C54,C5
5,C56,C57,C66,C67,
C68
0.1uF
CAP CER 0.1UF 50V Y5V
0603
Yageo
CC0603ZRY5V9BB104
4
1
C26
2200pF
CAP CER 2200PF 50V NP0
0603
Murata Electronics
GRM1885C1H222JA01D
5
9
C30,C34,C39,C40,C5
0,C51,C52,C58,C59
1UF
CAP CER 1UF 25V 10% X5R
0603
Taiyo Yuden
TMK107BJ105KA-T
6
1
F1
PTC RESETABLE
FUSE
PTC RESETTABLE .50A 15V
1812
Bourns Inc.
MF-MSMF050-2
7
3
J1, J13, J16
JUMPER
CONN HEADR BRKWAY .100
03POS STR
TE Connectivity AMP
Connectors
9-146280-0-03
8
1
J2
VIN
CONN HEADR BRKWAY .100
02POS STR
TE Connectivity AMP
Connectors
9-146280-0-02
9
1
J5
VCM
CONN HEADR BRKWAY .100
02POS STR
TE Connectivity AMP
Connectors
9-146280-0-02
10
1
J3
USB MINI B
MINI USB RCPT R/A DIP
TE Connectivity AMP
Connectors
1734510-1
11
2
J6,J7
SMA
CONN SMA JACK 50 OHM EDGE
MNT
Cinch Connectivity
Solutions Johnson
142-0701-801
12
1
LED1
LED Green
LED GREEN CLEAR 0805 SMD
Visual
Communications
Company - VCC
CMD17-21VGC/TR8
13
1
LED2
LED Amber
LED AMBER CLEAR 0805 SMD
Bivar Inc.
SM0805AC
14
1
L7
FERRITE
CHIP 600
OHM 1.5A
FERRITE CHIP 600 OHM
1500MA 1206
Murata Electronics
BLM31PG601SN1L
15
2
R30,R31
49.9
RES SMD 49.9 OHM 0.1%
1/10W 0603
Panasonic Electronic
Components
ERA-3AEB49R9V
16
2
R1,R211
560
RES SMD 560 OHM 5% 1/10W
0603
Panasonic Electronic
Components
ERJ-3GEYJ561V
17
1
R3
100K
RES SMD 100K OHM 5%
1/10W 0603
Panasonic Electronic
Components
ERJ-3GEYJ104V
18
1
R4
0
RES SMD 0.0 OHM JUMPER
1/10W (0402pkg)
Panasonic Electronic
Components
ERJ-2GE0R00X
19
1
R5
127
RES SMD 127 OHM 1% 1/10W
0603
Panasonic Electronic
Components
ERJ-3EKF1270V
20
3
R16,R226,R228
15K
RES SMD 15K OHM 5% 1/10W
0603
Panasonic Electronic
Components
ERJ-3GEYJ153V
21
2
R17,R18
22
RES SMD 22 OHM 1% 1/10W
0603
Panasonic Electronic
Components
ERJ-3EKF22R0V
22
3
R20,R21,R227
30K
RES SMD 30K OHM 5% 1/10W
0603
Panasonic Electronic
Components
ERJ-3GEYJ303V
Appendix
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 36
Table A-1. Bill of Materials
Item
Quantity
Reference
Value
Description
Manufacturer
Manufacturing
Part Number
23
1
R201
10k
RES SMD 10K OHM 1% 1/10W
0603
Yageo
RC0603FR-0710KL
24
1
R202
22.6K
RES SMD 22.6K OHM 1%
1/10W 0603
Yageo
RC0603FR-0722K6L
25
1
R203
8.25K
RES SMD 8.25K OHM 1%
1/10W 0603
Yageo
RC0603FR-078K25L
26
1
R204
18k
RES SMD 18K OHM 1% 1/10W
0603
Yageo
RC0603FR-0718KL
27
7
R206,R213,R214,R22
3,R224,R229,R230
0 ohm
RES SMD 0.0 OHM JUMPER
1/10W
Panasonic Electronic
Components
ERJ-3GEY0R00V
28
2
R217,R218
1K
RES SMD 1K OHM 1% 1/10W
0603
Panasonic Electronic
Components
ERJ-3EKF1001V
29
1
U1
CY29412FLXI
Clock generator, LCC package
Cypress
CY29412FLXI
30
1
U7
CY8C5868LTI
-LP039
QFN68
CY8C5868LTI-LP039 QFN68
Cypress
CY8C5868LTI-LP039
31
1
U8
MIC5301
IC REG LDO ADJ 0.15A
TSOT23-5
Microchip Technology
MIC5301YD5-TR
32
1
U10
PUSBM12VX
4-TL,115
TVS DIODE 5.5VWM 12VC
6HXSON
NXP Semiconductors
PUSBM12VX4-TL,115
Special Jumper Installation Instructions
33
1
J1
Install jumper
across pins 1
and 2
HW, CONN, Rectangular, MINI
JUMPER, 6.5mm, CLOSE
TYPE, BLACK, NICKEL
Sullins Connector
Solutions
STC02SYAN
34
1
J2
Install jumper
across pins 1
and 2
HW, CONN, Rectangular, MINI
JUMPER, 6.5mm, CLOSE
TYPE, BLACK, NICKEL
Sullins Connector
Solutions
STC02SYAN
35
1
J5
Install jumper
across pins 1
and 2
HW, CONN, Rectangular, MINI
JUMPER, 6.5mm, CLOSE
TYPE, BLACK, NICKEL
Sullins Connector
Solutions
STC02SYAN
36
1
J13
Install jumper
across pins 2
and 3
HW, CONN, Rectangular, MINI
JUMPER, 6.5mm, CLOSE
TYPE, BLACK, NICKEL
Sullins Connector
Solutions
STC02SYAN
37
1
J16
Install jumper
across pins 2
and 3
HW, CONN, Rectangular, MINI
JUMPER, 6.5mm, CLOSE
TYPE, BLACK, NICKEL
Sullins Connector
Solutions
STC02SYAN
Labels
38
1
N/A
N/A
LBL, PCA Label, Vendor Code,
Datecode, Serial Number 121-
60307-01 Rev 03
(YYWWVVXXXXX)
Cypress
Semiconductor
No Load Components
39
3
C62,C63,C70
1UF
CAP CER 1UF 25V 10% X5R
0603
Taiyo Yuden
TMK107BJ105KA-T
Appendix
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 37
Table A-1. Bill of Materials
Item
Quantity
Reference
Value
Description
Manufacturer
Manufacturing
Part Number
40
1
C5
10UF
CAP TANT 10UF 16V 10%
1206
AVX Corporation
TAJA106K016R
41
2
C31,C35
33uF
CAP TANT 33UF 6.3V 20%
1206
Rohm Semiconductor
TCA0J336M8R
42
1
C33
4.7uF
CAP CER 4.7UF 6.3V X5R
0603
Murata Electronics
GRM188R60J475KE19D
43
1
H7
2 Pin Header
TE_640456-2 (2-pin Header)
TE Connectivity AMP
Connectors
640456-2
44
1
J4
I2C HEADER
CONN HEADER 5POS .100
VERT TIN
Molex, LLC
22-23-2051
45
1
L8
FERRITE
CHIP 600
OHM 1.5A
FERRITE CHIP 600 OHM
1500MA 1206
Murata Electronics
BLM31PG601SN1L
46
5
R14,R15,R216,R210,
R225
0 ohm
RES SMD 0.0 OHM JUMPER
1/10W
Panasonic Electronic
Components
ERJ-3GEY0R00V
47
1
R19
15K
RES SMD 15K OHM 5% 1/10W
0603
Panasonic Electronic
Components
ERJ-3GEYJ153V
48
1
R208
6.04K
RES SMD 6.04K OHM 1%
1/10W 0603
Yageo
RC0603FR-076K04L
49
1
R207
10k
RES SMD 10K OHM 1% 1/10W
0603
Yageo
RC0603FR-0710KL
50
1
U9
MIC5301
IC REG LDO ADJ 0.15A
TSOT23-5
Microchip Technology
MIC5301YD5-TR
51
8
TP13,TP14,TP15,TP3
1,TP34,TP35,TP36,T
P37
BLACK
TEST POINT 43 HOLE 65
PLATED BLACK
Keystone Electronics
5001
CY3676 Evaluation Kit User Guide, Doc. No. 002-11165 Rev. *A 38
Revision History
Document Revision History
Document Title: CY3676 Evaluation Kit User Guide
Document Number: 002-11165
Revision
Issue Date
Origin of
Change
Description of Change
**
06/30/2016
TAVA
Initial version of the kit guide.
*A
12/08/2016
TAVA
Updated Theory of Operation, Programming the CY29412, and Functional Programming.
Updated Figure 3-1, Figure 3-6 through Figure 3-11, Figure A-2, Figure A-3, Figure A-4, and
Figure A-5.
Updated Table 5-1.
Added Figure 3-10 and Figure 5-1 through Figure 5-4.
Updated the table description for Item 38 in Table A-1.
Updated Copyright.