iC-Haus iC-TW29 User Manual

preliminary preliminary
iC-TW29 26-BIT ENCODER PROCESSOR
WITH INTERPOLATION AND BiSS INTERFACE
Rev C1, Page 1/28
FEATURES
• Any output resolution with any input resolution
• Independently-programmed ABZ, UVW, and BiSS resolutions
• Absolute data interface for external revolution counters
• BiSS C-Mode interface (Encoder Proles 3, 3S, and 4)
• 26-bit singleturn position and 32-bit revolution count via SPI
• Four capture registers for coded reference marks and
touch-probe applications
• Eccentricity compensation
• Input frequency up to 700 kHz
• AB output frequency of up to 12.5 MHz
• Differential RS422 line driver outputs for ABZ or UVW
• Simultaneous single-ended outputs for ABZ, UVW, BiSS
• Automatic compensation of amplitude, offset, and phase errors
• Digital ltering for ultra-low output jitter
• Encoder Link interface for in-eld re-conguration
• Internal EEPROM and oscillator
• LED intensity control by PWM output
• Low latency (2.4 µs or 5.0 µs)
• Pin-compatible with iC-TW28
APPLICATIONS
• Rotary and linear incremental or
absolute encoders
• Magnetic or optical sin/cos
sensor interface
• Brushless motor commutation
(2...64 poles)
• Imbedded motion control
PACKAGES
32-pin QFN
5 mm x 5 mm x 0.9 mm
RoHS compliant
BLOCK DIAGRAM
Interpolated Angle (IA)
SPI
Interface
xSS
SCK
SO
SI
Interpolator
ZERO
Channel
SIN+
SIN–
COS+
COS–
ZERO+
ZERO–
26-Bit
Gearbox
Includes
Filter,
Hysteresis,
and
Eccentricity
Correction
Zero Gating Window (ZW)
ABZ with
Output Freq.
Limiter
Normalized Angle (NR)
Revolution Count (RC)
UVW
BiSS Slave
with Encoder
Profile and
EDS
UVW Scan
Absolute Data
Interface
(ADI)
Revolution Count (RC),
Cycle Count (CC), and Sync Bits
I/O
Multiplexer
A+
A–
B+
B–
Z+
Z–
Auto Calibration,
Auto Adaption,
LED Control, Startup,
ID, EEPROM
xCALIBxIRQ LED
Position
Capture
BiSS Control Data
Encoder Link
Monitors:
Status/Fault, Temp.,
Sin/Cos Amplitude,
Excessive Error,
Excessive Adaption
GPIO
IA
CC
RC
AVDD AVSS DVDD DVSS IOVDD
IOVSS
iC-TW29
Copyright © 2019, 2020 iC-Haus http://www.ichaus.com

iC-Haus iC-TW29 Specifications

General

Brand	iC-Haus
Model	iC-TW29
Category	Computer Hardware
Language	English

Summary

PACKAGING INFORMATION

PIN CONFIGURATION QFN32-5x5

Visual representation of the pin layout for the QFN32-5x5 package.

PACKAGE DIMENSIONS

Mechanical dimensions and tolerances for the QFN32-5x5 package.

PIN FUNCTIONS

Detailed Pin Descriptions

Detailed list of each pin's name, I/O type, function, and description.

ABSOLUTE MAXIMUM RATINGS

THERMAL DATA

ELECTRICAL CHARACTERISTICS

Differential Signal Inputs

Electrical parameters for differential sine and cosine sensor inputs.

Zero Signal Inputs

Electrical parameters for differential zero signal inputs.

RS422 Output Drivers

Current and voltage characteristics for RS422 differential outputs.

LED Intensity Control Output

Parameters for the LED intensity control output.

Bias Voltage Outputs

Characteristics of bias voltage outputs.

OPERATING REQUIREMENTS

SPI Interface Timing

Timing requirements for the SPI serial interface.

Encoder Link Interface Timing

Timing and sequence requirements for the Encoder Link interface.

BISS Interface Timing

Timing requirements for BISS and SSI protocols.

ADI Interface Timing

Timing parameters for ADI interface with BISS and SSI protocols.

ELECTRICAL CONNECTIONS

Incremental Stand-Alone Connections

Typical connections for a standalone incremental encoder.

Absolute BiSS Stand-Alone Connections

Typical connections for an absolute BiSS multiturn encoder.

Hosted Application Connections

Typical connections for a hosted application with a host processor.

CONFIGURATION AND CALIBRATION

Configuration Introduction

Overview of configuration process using GUI and demo boards.

Default Configuration

Steps to load default settings and restart the device.

Input Configuration and Calibration

Guide to configuring sensor inputs and performing auto-calibration.

ORDERING INFORMATION