Skyworks Si5332-8A-EVB Manuale utente
UG398: Si5332-8A-EVB User's Guide
(Using Si5332-AM2-QFN40-EVB)
The Si5332-8A-EVB is used for evaluating the eight-output Automotive Grade
Si5332 Low Jitter Any-Frequency Clock Generator. The Si5332-AM2 device uses
the patented Multisynth™ technology to generate up to eight independent clock fre-
quencies each with 0 ppm synthesis error. The Si5332-8A-EVB has three independ-
ent input reference clocks or can use the on-board 25 MHz crystal as reference.
The Si5332-8A-EVB can be controlled and configured using the Skyworks Clock
Builder Pro™ (CBPro™) software tool.
KEY FEATURES
• Powered from either USB port or external +5V
power supply.
• 25 MHz crystal reference or external input clock
reference.
• Programmable device VDD supply for operation
at 3.3 V, 2.5 V, or 1.8 V, controlled by CBPro™
Software.
• Programmable VDDO supplies allow each of
the 6 clock output banks to have its own power
supply voltage selectable from 3.3 V, 2.5 V, 1.8
V, or 1.5 V (1.5 V LVCMOS only).
• CBPro™ GUI-controlled voltage, current, and
power measurements of VDD and all VDDO
supplies.
• SMA connectors for all input and output clocks.
• External digital input functions emulated via on-
board switches.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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Table of Contents
1. Functional Block Diagram ..........................3
2. Si5332 CBPro™ Overview ..........................4
3. Si5332-8A-EVB Operation ..........................5
3.1 Initial Default Configuration ..........................5
3.2 DIP Switch Functions ............................5
3.3 LEDs .................................6
3.4 Input Clocks ...............................7
3.5 Output Clocks ..............................8
4. Using CBPro™ with Si5332-8A-EVB .......................9
4.1 CBPro™ EVB GUI.............................10
4.2 Device Register Changes Using the CBPro™ EVB GUI ................12
4.3 Creating a New Si5332-AM2 CBPro™ Configuration .................13
5. Si5332-8A-EVB Rev 1.0 Schematics ...................... 15
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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1. Functional Block Diagram
Below is a functional block diagram of the Si5332-8A-EVB. This EVB can be connected to a PC via the main USB connector for
configuration, control, and monitoring using Skyworks’ CBPro software. The EVB’s power can be supplied from the USB connection or
external +5V power source.
USB
Connector
Ext +5V
Connector
C8051F380
MCU
Si5332
Variable Power
Supplies
Digital Inputs
(GPIO)
Crystal,
Ext. Clocks Si5332
USB +5V
USB
Ext +5V
I2C Bus
VDD_CORE
VDDOs (6)
Output
Termination
Output
Clocks
Input Clock
Reference
(optional)
USB
Windows PC
running
CBProTM
Si5332-8A-EVB
Figure 1.1. Si5332-8A-EVB Functional Block Diagram
UG398: Si5332-8A-EVB User's Guide (Using Si5332-AM2-QFN40-EVB) • Functional Block Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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2. Si5332 CBPro™ Overview
All Si5332 devices, and corresponding EVBs, are fully supported in Skyworks’ ClockBuilder Pro (CBPro) software. Note that CBPro
software is required to configure and use the Si5332-8A-EVB. Please download and install CBPro from the link shown below.
https://www.skyworksinc.com/en/Application-Pages/Clockbuilder-Pro-Software
With CBPro, users can perform the following:
• Create full device configurations (frequency plans) including multi-profile configurations.
• Get estimated power consumption and estimated operating junction temperature of the configuration.
• Evaluate/Test configurations using a supported EVB.
•Create downloadable configuration files designed to be I2C, downloaded into target Si5332 device.
• Submit a configuration for creation of a custom, factory-programmed device with a unique orderable part number (no added cost).
• Submit a request for a phase noise report of the specific configuration.
Figure 2.1. CBPro Start-up Window
UG398: Si5332-8A-EVB User's Guide (Using Si5332-AM2-QFN40-EVB) • Si5332 CBPro™ Overview
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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3. Si5332-8A-EVB Operation
3.1 Initial Default Configuration
The Si5332-8A-EVB has power supply configuration DIP switches (SW1 – SW7) which are set at the factory to the OFF position.
The EVB also has a programmable digital I/O (GPIO) configuration DIP switch (SW8) also with all switches set to OFF position. The
required EVB default DIP switch settings are all switches OFF (as shown below) and these settings are required to allow CBPro
software to control and configure the EVB. In addition, JP1 jumper should be installed on the “USB” side (pins 1 & 2).
Figure 3.1. Si5332-8A-EVB Initial Default Configuration
3.2 DIP Switch Functions
The power supply DIP switches (SW1 – SW7) are intended to provide flexibility in cases when a pre-programmed Si5332-AM2 device
is installed on the board and CBPro will not be used to configure the Si5332-AM2 device or to control the on-board power supply
settings. Typically, the power supply DIP switches (SW1- SW7) will only be used if a configuration is burned into the Si5332-AM2’s NVM
by using the CBPro Field Programming Dongle or a pre-configured Si5332-AM2 (custom OPN) is installed on the EVB.
The programmable digital input (GPIO) signal configuration switch (SW8) will only be used to turn specific features on/off based on the
CBPro configuration loaded into the Si5332-AM2 device. For example, a programmable digital input, such as an Output Enable (OE),
can be assigned to Input 1. Once the Si5332-AM2 configuration with Input 1 assigned as OE is loaded, Input 1 on SW8 can be used to
control this OE input signal by setting high/low. Input 1 switch OFF = 1, Input 1 switch ON = 0.
UG398: Si5332-8A-EVB User's Guide (Using Si5332-AM2-QFN40-EVB) • Si5332-8A-EVB Operation
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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3.3 LEDs
The Si5332-8A-EVB has 3 indicator LEDs (D2, D3, D4) near the USB connector as shown and defined below.
Figure 3.2. Si5332-8A-EVB LED Locations
D2: This Blue LED (+5VUSB) lights to indicate USB +5V is present.
D3: This Green LED (Ready) lights to indicate the EVB’s USB has enumerated with the host PC.
D4: This Green LED (Busy) lights to indicate that CBPro has successfully connected to the EVB.
UG398: Si5332-8A-EVB User's Guide (Using Si5332-AM2-QFN40-EVB) • Si5332-8A-EVB Operation
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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3.4 Input Clocks
The Si5332-AM2 device can support 3 sources of input reference clock. One source is the crystal input on XA/XB pins. (XA can also be
used as a single-ended external input if the crystal is removed, see Si5332-AM2 Data Sheet for more details.). The other 2 are separate
external input clock sources which can be either differential or single-ended clocks.
As shown in the schematic below, the Si5332-8A-EVB is pre-populated with a 25 MHz crystal on the XA/XB crystal input. Both
differential external clock inputs have 50-ohm terminations installed by default. The CLKIN1 input has “not-installed” (“NI”) components
to isolate the CLKIN1 input from the crystal circuit when the crystal is installed.
Figure 3.3. Si5332-8A-EVB Input Clock Circuit
UG398: Si5332-8A-EVB User's Guide (Using Si5332-AM2-QFN40-EVB) • Si5332-8A-EVB Operation
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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3.5 Output Clocks
The Si5332-AM2 device can support up to 8 differential pair outputs, or 8 pairs of LVCMOS outputs (16 total LVCMOS outputs). Each
output pair has an output termination circuit as shown in figure below. The default output termination is AC coupled outputs from
Si5332-AM2 device with no other termination.
The default output termination components (0 Ω & 0.1 µF) combined with the “NI” (not installed) component sites on the EVB can be
used as locations to create the desired output termination configuration. For example, if DC output termination is required, the 0.1 µF
caps can be replaced with 0 Ω resistors. Note that not all possible termination schemes can be supported by the circuit below and in
some cases external components may be required.
Figure 3.4. Si5332-8A-EVB Single Pair Output Clock Termination Circuit
UG398: Si5332-8A-EVB User's Guide (Using Si5332-AM2-QFN40-EVB) • Si5332-8A-EVB Operation
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
8Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 21, 2022 8
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4. Using CBPro™ with Si5332-8A-EVB
Skyworks’ CBPro software is required for using the Si5332-8A-EVB. It can be downloaded from Skyworks' download link: https://
www.skyworksinc.com/en/Application-Pages/Clockbuilder-Pro-Software.
Once downloaded and installed, running CBPro should present the following window:
Figure 4.1. CBPro Start-up Window
If an evaluation board is connected via USB, the EVB should be detected and will be indicated as shown at the arrow in the above
image. Multiple EVBs can be connected and individually selected in CBPro.
The EVB GUI is a useful tool as it will allow monitoring and control of EVB functions like the digital inputs and power supply voltage and
current measurements. The EVB GUI can also be used to read and write on-chip registers and report other useful status information.
UG398: Si5332-8A-EVB User's Guide (Using Si5332-AM2-QFN40-EVB) • Using CBPro™ with Si5332-8A-EVB
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
9Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 21, 2022 9
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4.1 CBPro™ EVB GUI
The EVB GUI is invoked by pressing the “EVB GUI” button from CBPro’s main window. Across the top of the EVB GUI window, as
shown below, are several tabs for selection of various useful informational pages, and pages for configuration, control, or monitoring of
the EVB.
Figure 4.2. EVB GUI - Info Page
The “Info” tab shows information regarding EVB board and DUT device identification. Both the “Control Registers” and “Log” windows
are shown in all EVB GUI tabs. The “Control Registers” are useful buttons to place Si5332 device in Active or Ready mode and well
as Reset the device. (Refer to follow-on description of “Status Registers” tab for important information on device mode and its effect on
register accesses.) The “Log” window is a log of all CBPro – EVB communications.
The “DUT Settings Editor” and “DUT Register Editor” tabs allow registers to be read/written by either the setting name or by direct hex
byte access.
Figure 4.3. EVB GUI - DUT Settings / DUT Register Editors
UG398: Si5332-8A-EVB User's Guide (Using Si5332-AM2-QFN40-EVB) • Using CBPro™ with Si5332-8A-EVB
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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