TIDEP0050

EnDat 2.2 System Reference Design

TIDEP0050

Design files

Overview

This reference design implements EnDat 2.2 Master protocol stack and hardware interface based on HEIDENHAIN EnDat 2.2 standard for position or rotary encoders. The design is composed of EnDat 2.2 Master protocol stack, half-duplex communications using RS-485 transceivers and the line termination implemented on the Sitara AM437x industrial development kit.  This design is fully tested to meet HEIDENHAIN EnDat 2.2 standard. Along with EnDat position feedback, AM437x IDK is able to support industrial communications and motor drive as described in the AM437x single-chip motor-control design guide.

Features
  • Enables you to use EnDat 2.2 encoder interlaces to implement low footprint, low-power single chips in applications such as industrial automation and factory automation
  • EnDat 2.2 interface is the technical standard for direct drive technology due to its high resolution, short cycle times, commutation information, long line length support and encoder diagnostics.
  • EnDat 2.2 digital technology, simple connection technology and simple voltage supply requirements reduce overall system cost.
  • Based on Sitara AM437x processor which supports single-chip motor-control applications and other embedded control and communication applications
  • Production-ready development platform sub-system which includes schematics, BOM, user guide, benchmarks, software, demos and more.
  • Free board support package and industrial software development kit from TI.
  • Sitara AM437x supports a number of industrial communications standards including EtherCAT, Profinet, PROFIBUS, Ethernet/IP, Powerlink and Sercos.

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUAL5.PDF (1752 K)

Reference design overview and verified performance test data

TIDRC79A.ZIP (1276 K)

Detailed schematic diagram for design layout and components

TIDRI18.PDF (119 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRC76A.ZIP (870 K)

Detailed overview of design layout for component placement

TIDRC77A.ZIP (21148 K)

Files used for 3D models or 2D drawings of IC components

TIDC823A.ZIP (11389 K)

Design file that contains information on physical board layer of design PCB

TIDRC78A.ZIP (6065 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AND gates

SN74LVC1G08Single 2-input, 1.65-V to 5.5-V AND gate

Data sheet document-pdfAcrobat PDF
Arm-based processors

AM4379Sitara processor: Arm Cortex-A9, PRU-ICSS, EtherCAT, 3D graphics

Data sheet document-pdfAcrobat PDF open-in-new HTML
Auto-direction voltage translators

TXS01022-Bit Bidirectional Voltage-Level Shifter for Open-Drain and Push-Pull Application

Data sheet document-pdfAcrobat PDF
Automotive LED drivers

TPIC28108-bit LED driver with I2C interface

Data sheet document-pdfAcrobat PDF
Brushless DC (BLDC) motor drivers

DRV831365-V max, 3-A peak 3-phase motor driver

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck converters (integrated switch)

TPS54023.5V to 28V Input, 1.7A Output, Non-Synchronous Step-Down Regulator with Integrated MOSFET

Data sheet document-pdfAcrobat PDF
Buck converters (integrated switch)

TPS62362Processor Core Supply with I2C Compatible Interface and Remote Sense. 0.77 to 1.4 Vout

Data sheet document-pdfAcrobat PDF
Clock generators

CDCE913Programmable 1-PLL VCXO clock synthesizer with 2.5-V or 3.3-V LVCMOS outputs

Data sheet document-pdfAcrobat PDF open-in-new HTML
DDR memory power ICs

TPS512003A Sink/Source DDR Termination Regulator w/ VTTREF Buffered Reference for DDR2, DDR3, DDR3L and DDR4

Data sheet document-pdfAcrobat PDF open-in-new HTML
Direction-controlled voltage translators

SN74AVC1T45Single-Bit Dual-Supply Bus Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs

Data sheet document-pdfAcrobat PDF open-in-new HTML
Direction-controlled voltage translators

SN74AVC2T245Dual-Bit, 2-DIR pin Dual-Supply Bus Transceiver w/ Configurable Voltage Translation, 3-State Output

Data sheet document-pdfAcrobat PDF open-in-new HTML
Direction-controlled voltage translators

SN74LVC8T2458-Bit Dual-Supply Bus Transceiver with Configurable Voltage-Level Shifting and Three-State Outputs

Data sheet document-pdfAcrobat PDF open-in-new HTML
ESD & surge protection ICs

TPD2E001Dual 1.5-pF, 5.5-V, ±8-kV ESD protection diode with 1-nA max leakage & VCC pin for USB 2.0

Data sheet document-pdfAcrobat PDF open-in-new HTML
ESD & surge protection ICs

TPD6E0016 channel 1.5-pF, 5.5-V, ±8-kV ESD protection diode with 1-nA max leakage & VCC pin for USB 2.0

Data sheet document-pdfAcrobat PDF open-in-new HTML
Ethernet PHYs

TLK105LIndustrial temperature, single port 10/100-Mbps Ethernet physical layer

Data sheet document-pdfAcrobat PDF open-in-new HTML
Fixed-direction voltage translators

SN74AVC2T244Dual-Bit Dual-Supply Bus Transceiver

Data sheet document-pdfAcrobat PDF open-in-new HTML
High-speed op amps (GBW>=50MHz)

OPA3652.2V, 50MHz, Low-Noise, Single-Supply Rail-to-Rail Operational Amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML
Inverting buffers & drivers

SN74LVC1G04Single 1.65-V to 5.5-V inverter

Data sheet document-pdfAcrobat PDF
Load switches

TPS229223.6-V, 2-A, 14-mΩ, 35-nA leakage load switch with output discharge

Data sheet document-pdfAcrobat PDF open-in-new HTML
Multi-switch detection interface (MSDI) ICs

SN65HVS88234-V, 8-channel digital-input serializer for industrial automation & process control

Data sheet document-pdfAcrobat PDF
NAND gates

SN74LVC1G00Single 2-input, 1.65-V to 5.5-V NAND gate

Data sheet document-pdfAcrobat PDF open-in-new HTML
Noninverting buffers & drivers

SN74LV244A8-ch, 2-V to 5.5-V buffers with 3-state outputs

Data sheet document-pdfAcrobat PDF open-in-new HTML
Noninverting buffers & drivers

SN74LVC1G07Single 1.65-V to 5.5-V buffer with open-drain outputs

Data sheet document-pdfAcrobat PDF open-in-new HTML
RS-485 & RS-422 transceivers

SN65HVD783.3 V Half-Duplex RS-485, with IEC ESD, 50 Mbps

Data sheet document-pdfAcrobat PDF open-in-new HTML
Series voltage references

LM41320.05% 20-ppm/°C drift precision series voltage reference with shutdown enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
Series voltage references

REF30252.5-V, 50-ppm/°C, 50-µA in 3-pin SOT-23 package series (bandgap) voltage reference

Data sheet document-pdfAcrobat PDF open-in-new HTML
Supervisor & reset ICs

TPS386000Open-drain, quad-supply voltage supervisors with programmable delay & watchdog timer

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide EnDat 2.2 System Design Guide Sep. 14, 2015
Technical article Designing an EMC-compliant interface to motor position encoders – Part 6 Nov. 20, 2015

Related design resources

Reference designs

REFERENCE DESIGN
TIDA-00172 Reference Design for an Interface to a Position Encoder with EnDat 2.2 TIDEP0025 Single Chip Drive for Industrial Communications and Motor Control TIDEP0039 Sercos III Slave For AM437x Communication Development Platform Reference Design

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