MICROCHIP Sinc3 Filter User Guide

: May 15, 2024
: MICROCHIP

Table of Contents

MICROCHIP Sinc3 Filter
Product Information
FAQs
Introduction
Features
Functional Description
Timing Diagrams
Revision History
Microchip Information
Customer Support
Worldwide Sales and Service
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

MICROCHIP Sinc3 Filter

MICROCHIP-Sinc3-Filter-PRO

Product Information

Specifications
- Core Version: Sinc3 Filter v4.3
- Supported Device Families: PolarFire MPF300T
Device Utilization:
- Resources: LUTs 157, DFF 218
- Performance: 200 MHz
Features
- The Sinc3 Filter is a low-pass filter that removes high-frequency components above the cutoff frequency while preserving frequencies below it. It implements three stages of integration and differentiation at a decimated clock.
Supported Tool Flow
- The Sinc3 Filter core comes with encrypted RTL code for instantiation with SmartDesign. Simulation, Synthesis, and Layout are done using Libero software. Licensing requires purchasing the encrypted RTL separately.
Device Utilization and Performance
- The Sinc3 Filter utilizes 157 LUTs, and 218 DFFs, and operates at a performance of 200 MHz on the PolarFire MPF300T device.
Functional Description
- The Sinc3 Filter hardware implementation involves three stages of integration and differentiation for low-pass filtering.
- Sinc3 Filter Parameters and Interface Signals
Configuration Settings
- Users can configure the cutoff frequency and other filter parameters for the Sinc3 Filter.
Input and Output Signals
- The Sinc3 Filter accepts input signals for filtering and provides filtered output signals based on the configured parameters.
Product Usage Instructions
- Configure the cutoff frequency and other filter settings as needed.
- Apply input signals to the Sinc3 Filter for processing.
- Retrieve the filtered output signals for further analysis or processing.

FAQs

Q: What is the ideal delay for the Sinc3 Filter?
- A: An ideal Sinc3 Filter requires an infinite delay, but a practical implementation involves three stages of integration and differentiation at a decimated clock.
Q: What tool flow is recommended for working with the Sinc3 Filter?
- A: The Sinc3 Filter core is designed to be used with Libero software for simulation, synthesis, and layout. The encrypted RTL code facilitates instantiation with SmartDesign.

Introduction

(Ask a Question)

The Sinc3 Filter is a low-pass filter that removes all high-frequency components above the cutoff frequency without affecting the frequencies below the cutoff frequency. An ideal Sinc3 Filter requires an infinite delay. A practical Sinc3 Filter has three stages of integration and three stages of differentiation at a decimated clock.

Summary

Core Version	This document applies to Sinc3 Filter v4.3.
Supported Device	• PolarFire® SoC
Families	• PolarFire
• RTG4™
• IGLOO® 2
• SmartFusion® 2
Supported Tool Flow	Requires Libero® SoC v11.8 or later

releases.
Licensing| Complete encrypted RTL code is provided for the core, enabling the core to be instantiated with SmartDesign. Simulation, Synthesis, and Layout are performed with Libero software. Sinc3 Filter is licensed with encrypted RTL that must be purchased separately. For more information, see Sinc3 Filter.

Features

Sinc3 Filter has the following key features:

Demodulate data from a Delta-Sigma modulator, which is widely used in delta-sigma-type Analog-to-Digital Converter (ADC)
Convert the serial bitstream from ADC to parallel data

Implementation of IP Core in Libero Design Suite

IP core must be installed to the IP Catalog of the Libero® System-on-Chip (SoC) software.
This is installed automatically through the IP Catalog update function in the Libero SoC software, or the IP core is manually downloaded from the catalogue.
Once the IP core is installed in the Libero SoC software IP Catalog, the core is configured, generated, and instantiated within the SmartDesign tool for inclusion in the Libero project list.

Device Utilization and Performance

Table 1. Sinc3 Filter Utilization

Device Details| Resources| Performance (MHz)| RAMs| Math Blocks| Chip Globals
---|---|---|---|---|---
Family| Device| LUTs| DFF| LSRAM| μSRAM
PolarFire® SoC| MPFS250T| 157| 218| 200| 0| 0| 0| 0
PolarFire| MPF300T| 157| 218| 200| 0| 0| 0| 0
SmartFusion® 2| M2S150| 157| 218| 200| 0| 0| 0| 0

Important:

The data in this table is captured using typical synthesis and layout settings. CDR reference clock source was set to Dedicated with other configurator values unchanged.
The clock is constrained to 200 MHz while running the timing analysis to achieve the performance numbers.

Functional Description

This section describes the implementation details of the Sinc3 Filter.
The following figure shows the system-level block diagram of the Sinc3 Filter.

Figure 1-1. System-Level Block Diagram of Sinc3 Filter

$MICROCHIP-Sinc3-Filter-FIG-1 $1$$

Hardware Implementation of Sinc3 Filter

The following figure shows the hardware implementation of the Sinc3 Filter.

Figure 1-2. Hardware Implementation of Sinc3 Filter

$MICROCHIP-Sinc3-Filter-FIG-1 $2$$

The clk_adc_i signal is the modulator clock from the ADC to the Sinc3 Filter. The filter implements three sequential integrations at the rate of clk_adc_i. A decimated clock is generated internally based on configuration parameters as shown in the following equation. The output of the third integrator is differentiated serially three times concerning the decimated clock to generate the output.

$MICROCHIP-Sinc3-Filter-FIG-1 $3$$

Sinc3 Filter Parameters and Interface Signals

This section discusses the parameters in the Sinc3 Filter GUI configurator and I/O signals.

Configuration Settings

The following table lists the description of the configuration parameters used in the hardware implementation of Sinc3 Filter.
These are generic parameters and are varied as per the requirement of the application.

Table 2-1. Configuration Parameters

Signal Name	Description
g_STD_IO_WIDTH	Width of the input and output signals
g_DECIMATION_FACTOR	Division factor used to generate the decimated clock from

the system clock input
g_BIPOLAR| Select 0, if ADC is unipolar Select 1 if ADC is bipolar
g_NEGATE_OUTPUT| Select 0 if the data at the data_o port must be negated Select 1 if the data at the data_o port must be passed through

Input and Output Signals

The following table lists the input and output ports of the Sinc3 Filter.

Table 2-2. Inputs and Outputs of Sinc3 Filter

Signal Name	Direction	Description
reset_i	Input	Active low asynchronous reset signal to design
clk_adc_i	Input	Modulator clock coming from ADC
data_adc_i	Input	Data bitstream from the modulator in ADC
reg_rst_i	Input	When 1, reset all the registers. When 0, the filter is

normally operated.
clk_dec_o| Output| Decimated clock output. This is the same clock used for a differentiator. The output of the filter updates at the rising edge of this output. This signal is not generated when res_rst_i is high.
data_o| Output| Filtered data output

Timing Diagrams

This section discusses the Sinc3 Filter timing diagram.
The following figure shows the timing diagram of the Sinc3 Filter.

Figure 3-1. Sinc3 Filter Timing Diagram

$MICROCHIP-Sinc3-Filter-FIG-1 $4$$

Testbench

A unified testbench is used to verify and test the Sinc3 Filter called user testbench.
Testbench is provided to check the functionality of the Sinc3 Filter IP.

Simulation

The following steps describe how to simulate the core using the testbench:

Open the Libero SoC application, click the Catalog tab, expand Solutions-MotorControl, double-click Sinc3 Filter, and then click OK. The documentation associated with the IP is listed under Documentation.
- Important: If you do not see the Catalog tab, navigate to View > Windows menu and click Catalog to make it visible.
- Figure 4-1. Sinc3 Filter IP Core in Libero SoC Catalog $MICROCHIP-Sinc3-Filter-FIG-1 $5$$
On the Stimulus Hierarchy tab, select the testbench (sin3_filter_tb.v), right-click and then click Simulate Pre-Synth Design > Open Interactively.
- Important: If you do not see the Stimulus Hierarchy tab, navigate to View > Windows menu and click Stimulus Hierarchy to make it visible.
- Figure 4-2. Simulating Pre-Synthesis Design $MICROCHIP-Sinc3-Filter-FIG-1 $6$$
- ModelSim opens with the testbench file, as shown in the following figure.
- Figure 4-3. ModelSim Simulation Window $MICROCHIP-Sinc3-Filter-FIG-1 $7$$
- Important: If the simulation is interrupted due to the runtime limit specified in the.do file, use the run -all command to complete the simulation.

Revision History

The revision history describes the changes that were implemented in the document. The changes are listed by revision, starting with the most current publication.

Table 5-1. Revision History

Revision	Date	Description
A	03/2023	The following is the list of changes in revision A of the

document:

• Migrated the document to the Microchip template.

• Updated the document number to DS00004938A from 50200733.

• Added 3. Timing Diagrams.

• Added 4. Testbench.

3.0| —| The following list of changes are made in revision 3.0 of the document.

• Block Diagram of Sinc3 Filter is edited to replace the input signal hold_i with reg_rst_i.

• Inputs and Outputs of the Sinc3 Filter are edited to replace the input signal hold_i with reg_rst_i and its description.

2.0| —| The following list of changes are made in revision 2.0 of the document.

• The Configuration Parameters table was updated to add the configuration parameters g_BIPOLAR and g_NEGATE_OUTPUT and their descriptions.

• A new equation to calculate the equivalent resolution of the Sinc3 Filter output concerning the decimation factor is added in Hardware Implementation.

• Block Diagram of Sinc3 Filter was edited to add the input signal hold_i.

• Inputs and Outputs of the Sinc3 Filter table were edited to add the input signal, hold_i and its description.

1.0| 09/2016| Revision 1.0 was the first publication of this document.

Microchip FPGA Support

Microchip FPGA products group backs its products with various support services, including Customer Service, Customer Technical Support Center, a website, and worldwide sales offices.
Customers are suggested to visit Microchip online resources before contacting support as it is very likely that their queries have been already answered.
Contact the Technical Support Center through the website at www.microchip.com/support. Mention the FPGA Device Part number, select the appropriate case category, and upload design files while creating a technical support case.
Contact Customer Service for non-technical product support, such as pricing, product upgrades, update information, order status, and authorization.
- From North America, call 800.262.1060
- From the rest of the world, call 650.318.4460
- Fax, from anywhere in the world, 650.318.8044

Microchip Information

The Microchip Website
Microchip provides online support via our website at www.microchip.com/. This website is used to make files and information easily available to customers. Some of the content available includes:

Product Support – Datasheets and errata, application notes and sample programs, design resources, user’s guides and hardware support documents, latest software releases and archived software
General Technical Support – Frequently Asked Questions (FAQs), technical support requests, online discussion groups, Microchip design partner program member listing
Business of Microchip – Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives

Product Change Notification Service

Microchip’s product change notification service helps keep customers current on Microchip products.
Subscribers will receive email notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest.
To register, go to www.microchip.com/pcn. and follow the registration instructions.

Customer Support

Users of Microchip products can receive assistance through several channels:

Distributor or Representative
Local Sales Office
Embedded Solutions Engineer (ESE)
Technical Support

Customers should contact their distributor, representative or ESE for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in this document. Technical support is available through the website at: www.microchip.com/support.

Microchip Devices Code Protection Feature

Note the following details of the code protection feature on Microchip products:

Microchip products meet the specifications contained in their particular Microchip Data Sheet.
Microchip believes that its family of products is secure when used in the intended manner, within operating specifications, and under normal conditions.
Microchip values and aggressively protects its intellectual property rights. Attempts to breach the code protection features of Microchip products are strictly prohibited and may violate the Digital Millennium Copyright Act.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of its code.
Code protection does not mean that we are guaranteeing the product is “unbreakable”.
Code protection is constantly evolving. Microchip is committed to continuously improving the code protection features of our products.

Legal Notice

This publication and the information herein may be used only with Microchip products, including to design, test, and integrate Microchip products with your application. Use of this information in any other manner violates these terms. Information regarding device applications is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets your specifications. Contact your local Microchip sales office for additional support or, obtain additional support at www.microchip.com/en-us/support/design-help/client-support- services. THIS INFORMATION IS PROVIDED BY MICROCHIP “AS IS”. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE, OR WARRANTIES RELATED TO ITS CONDITION, QUALITY, OR PERFORMANCE. IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL, OR CONSEQUENTIAL LOSS, DAMAGE, COST, OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE INFORMATION OR ITS USE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT ALLOWED BY LAW, MICROCHIP’S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY RELATED TO THE INFORMATION OR ITS USE WILL NOT EXCEED THE NUMBER OF FEES, IF ANY, THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THE INFORMATION. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from all damages, claims, suits, or expenses resulting from such use. Unless otherwise stated, no licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, Adaptec, AVR, AVR logo, AVR Freaks, BesTime, BitCloud, CryptoMemory, CryptoRF, dsPIC, flexPWR, HELDO, IGLOO, JukeBlox, KeeLoq, Kleer, LANCheck, LinkMD, maXStylus, maXTouch, MediaLB, megaAVR, Microsemi, Microsemi logo, MOST, MOST logo, MPLAB, OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, PolarFire, Prochip Designer, QTouch, SAM-BA, SenGenuity, SpyNIC, SST, SST Logo, SuperFlash, Symmetricom, SyncServer, Tachyon, TimeSource, tinyAVR, UNI/O, Vectron, and XMEGA are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AgileSwitch, APT, ClockWorks, The Embedded Control Solutions Company, EtherSynch, Flashtec, Hyper Speed Control, HyperLight Load, Libero, motorBench, mTouch, Powermite 3, Precision Edge, ProASIC, ProASIC Plus, ProASIC Plus logo, Quiet- Wire, SmartFusion, SyncWorld, Temux, TimeCesium, TimeHub, TimePictra, TimeProvider, TrueTime, and ZL are registered trademarks of Microchip Technology Incorporated in the U.S.A. Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, Augmented Switching, BlueSky, BodyCom, Clockstudio, CodeGuard, CryptoAuthentication, CryptoAutomotive, CryptoCompanion, CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, Espresso T1S, EtherGREEN, GridTime, IdealBridge, In-Circuit Serial Programming, ICSP, INICnet, Intelligent Paralleling, IntelliMOS, Inter-Chip Connectivity, JitterBlocker, Knob-on- Display, KoD, maxCrypto, maxView, membrane, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE, Ripple Blocker, RTAX, RTG4, SAM ICE, Serial Quad I/O, simple map, SimpliPHY, SmartBuffer, SmartHLS, SMART-I.S., storClad, SQI, SuperSwitcher, SuperSwitcher II, Switchtec, SynchroPHY, Total Endurance, Trusted Time, TSHARC, USBCheck, VariSense, VectorBlox, VeriPHY, ViewSpan, WiperLock, XpressConnect, and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. The Adaptec logo, Frequency on Demand, Silicon Storage Technology, and Symmcom are registered trademarks of Microchip Technology Inc. in other countries. GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are the property of their respective companies. © 2023, Microchip Technology Incorporated and its subsidiaries. All Rights Reserved. ISBN: 978-1-6683-2117-1

Quality Management System

For information regarding Microchip’s Quality Management Systems, please visit www.microchip.com/quality.

Worldwide Sales and Service

AMERICAS	ASIA/PACIFIC	ASIA/PACIFIC	EUROPE

Corporate Office

2355 West Chandler Blvd. Chandler, AZ 85224-6199

Tel: 480-792-7200

Fax: 480-792-7277

Technical Support: www.microchip.com/support Web Address: www.microchip.com Atlanta

Duluth, GA

Tel: 678-957-9614

Fax: 678-957-1455

Austin, TX

Tel: 512-257-3370

Boston Westborough, MA Tel: 774-760-0087

Fax: 774-760-0088

Chicago

Itasca, IL

Tel: 630-285-0071

Fax: 630-285-0075

Dallas

Addison, TX

Tel: 972-818-7423

Fax: 972-818-2924

Detroit

Novi, MI

Tel: 248-848-4000

Houston, TX

Tel: 281-894-5983

Indianapolis Noblesville, IN Tel: 317-773-8323

Fax: 317-773-5453

Tel: 317-536-2380

Los Angeles Mission Viejo, CA Tel: 949-462-9523

Fax: 949-462-9608

Tel: 951-273-7800

Raleigh, NC

Tel: 919-844-7510

New York, NY

Tel: 631-435-6000

San Jose, CA

Tel: 408-735-9110

Tel: 408-436-4270

Canada – Toronto

Tel: 905-695-1980

Fax: 905-695-2078

| Australia – Sydney

Tel: 61-2-9868-6733

China – Beijing

Tel: 86-10-8569-7000

China – Chengdu

Tel: 86-28-8665-5511

China – Chongqing

Tel: 86-23-8980-9588

China – Dongguan

Tel: 86-769-8702-9880

China – Guangzhou

Tel: 86-20-8755-8029

China – Hangzhou

Tel: 86-571-8792-8115

China – Hong Kong SAR

Tel: 852-2943-5100

China – Nanjing

Tel: 86-25-8473-2460

China – Qingdao

Tel: 86-532-8502-7355

China – Shanghai

Tel: 86-21-3326-8000

China – Shenyang

Tel: 86-24-2334-2829

China – Shenzhen

Tel: 86-755-8864-2200

China – Suzhou

Tel: 86-186-6233-1526

China – Wuhan

Tel: 86-27-5980-5300

China – Xian

Tel: 86-29-8833-7252

China – Xiamen

Tel: 86-592-2388138

China – Zhuhai

Tel: 86-756-3210040

| India – Bangalore

Tel: 91-80-3090-4444

India – New Delhi

Tel: 91-11-4160-8631

India – Pune

Tel: 91-20-4121-0141

Japan – Osaka

Tel: 81-6-6152-7160

Japan – Tokyo

Tel: 81-3-6880- 3770

Korea – Daegu

Tel: 82-53-744-4301

Korea – Seoul

Tel: 82-2-554-7200

Malaysia – Kuala Lumpur

Tel: 60-3-7651-7906

Malaysia – Penang

Tel: 60-4-227-8870

Philippines – Manila

Tel: 63-2-634-9065

Singapore

Tel: 65-6334-8870

Taiwan – Hsin Chu

Tel: 886-3-577-8366

Taiwan – Kaohsiung

Tel: 886-7-213-7830

Taiwan – Taipei

Tel: 886-2-2508-8600

Thailand – Bangkok

Tel: 66-2-694-1351

Vietnam – Ho Chi Minh

Tel: 84-28-5448-2100

| Austria – Wels

Tel: 43-7242-2244-39

Fax: 43-7242-2244-393

Denmark – Copenhagen

Tel: 45-4485-5910

Fax: 45-4485-2829

Finland – Espoo

Tel: 358-9-4520-820

France – Paris

Tel: 33-1-69-53-63-20

Fax: 33-1-69-30-90-79

Germany – Garching

Tel: 49-8931-9700

Germany – Haan

Tel: 49-2129-3766400

Germany – Heilbronn

Tel: 49-7131-72400

Germany – Karlsruhe

Tel: 49-721-625370

Germany – Munich

Tel: 49-89-627-144-0

Fax: 49-89-627-144-44

Germany – Rosenheim

Tel: 49-8031-354-560

Israel – Ra’anana

Tel: 972-9-744-7705

Italy – Milan

Tel: 39-0331-742611

Fax: 39-0331-466781

Italy – Padova

Tel: 39-049-7625286

Netherlands – Drunen

Tel: 31-416-690399

Fax: 31-416-690340

Norway – Trondheim

Tel: 47-72884388

Poland – Warsaw

Tel: 48-22-3325737

Romania – Bucharest

Tel: 40-21-407-87-50

Spain – Madrid

Tel: 34-91-708-08-90

Fax: 34-91-708-08-91

Sweden – Gothenburg

Tel: 46-31-704-60-40

Sweden – Stockholm

Tel: 46-8-5090-4654

UK – Wokingham

Tel: 44-118-921-5800

Fax: 44-118-921-5820

References

Read User Manual Online (PDF format)

Read User Manual Online (PDF format) >>

Download This Manual (PDF format)

Download this manual >>