IC-TW28 Datasheet, PDF (3/80 Pages) IC-Haus GmbH – 10-BIT SIN/COS INTERPOLATOR

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CONTENTS
Rev D2, Page 3/80
PACKAGING INFORMATION
5
Residual Error Calculation (Serial Only) . . . 17
PIN CONFIGURATION QFN32-5x5
(top view) . . . . . . . . . . . . . . . . . . . 5
EEPROM . . . . . . . . . . . . . . . . . . . . 17
PACKAGE DIMENSIONS . . . . . . . . . . . 6 ^{ELECTRICAL CONNECTIONS}
18
PIN FUNCTIONS . . . . . . . . . . . . . . . 7
Power and Ground . . . . . . . . . . . . . . . 20
ABSOLUTE MAXIMUM RATINGS
Reference Outputs . . . . . . . . . . . . . . . 20
8
xCALIB Input . . . . . . . . . . . . . . . . . . 20
THERMAL DATA
SIN and COS Inputs . . . . . . . . . . . . . . 21
8
ZERO Inputs . . . . . . . . . . . . . . . . . . 21
ELECTRICAL CHARACTERISTICS
9
ABZ Outputs . . . . . . . . . . . . . . . . . . 21
UVW Outputs . . . . . . . . . . . . . . . . . . 22
OPERATING REQUIREMENTS
12
xRST Input . . . . . . . . . . . . . . . . . . . 22
SPI Interface . . . . . . . . . . . . . . . . . . 12
xIRQ Output . . . . . . . . . . . . . . . . . . 22
Encoder Link Interface . . . . . . . . . . . . . 13
LED Output . . . . . . . . . . . . . . . . . . . 22
FUNCTIONAL OVERVIEW
PINCFG Input . . . . . . . . . . . . . . . . . 22
14
Configuration Resistors . . . . . . . . . . . . 23
FUNCTIONAL BLOCK DIAGRAM
15
Reference . . . . . . . . . . . . . . . . . . . . 15
SPI Port . . . . . . . . . . . . . . . . . . . . . 23
Reserved Pins . . . . . . . . . . . . . . . . . 23
Oscillator . . . . . . . . . . . . . . . . . . . . 15 _{CONFIGURATION OVERVIEW}
24
Power-On Reset . . . . . . . . . . . . . . . . 15
Pin Configuration Mode . . . . . . . . . . . . 24
SPI Port/Configuration Pins . . . . . . . . . . 15
Interpolation Factor . . . . . . . . . . . . . . 24
Encoder Link Interface . . . . . . . . . . . . . 15
Hysteresis and Filtering . . . . . . . . . . . . 24
Input Stage . . . . . . . . . . . . . . . . . . . 15
AB Frequency Limit and Auto Adaption . . . 25
Analog Error Correction . . . . . . . . . . . . 15
Analog-to-Digital Converters (ADCs) . . . . . 15
Input Range, Interpolation Group, and Z
Calibration . . . . . . . . . . . . . . . . 25
Digital Error Correction . . . . . . . . . . . . 15
Serial Configuration Mode . . . . . . . . . . . 26
Angle Calculation (Arctan) . . . . . . . . . . . 16
Filter . . . . . . . . . . . . . . . . . . . . . . . 16 ^{CALIBRATION OVERVIEW}
27
Hysteresis . . . . . . . . . . . . . . . . . . . . 16
Hardware Auto Calibration (xCALIB) . . . . . 27
Interpolation Factor . . . . . . . . . . . . . . 16
Software Auto Calibration . . . . . . . . . . . 28
Z Signal Path . . . . . . . . . . . . . . . . . . 16 _STARTUP
28
ABZ Generator . . . . . . . . . . . . . . . . . 16
Post-AB Divider . . . . . . . . . . . . . . . . 16 SPI COMMUNICATION
29
UVW Signal Path . . . . . . . . . . . . . . . . 16
Command Packet Format . . . . . . . . . . . 30
ABZ/UVW Outputs . . . . . . . . . . . . . . . 16
Null Write (Read Only) . . . . . . . . . . . . . 31
Auto Calibration . . . . . . . . . . . . . . . . 16
Multi-Cycle Counter Write . . . . . . . . . . . 31
Auto Adaption . . . . . . . . . . . . . . . . . 16
Multi-Cycle Counter Atomic Read/Write . . . 31
Fault Handling . . . . . . . . . . . . . . . . . 16
Register Write . . . . . . . . . . . . . . . . . 32
AB Output Frequency Limiter . . . . . . . . . 17
Register Data and Position Read . . . . . . . 32
Amplitude Monitor . . . . . . . . . . . . . . . 17
Response Packet Formats . . . . . . . . . . 32
LED Intensity Control (Serial Only) . . . . . . 17
Position and Status Read . . . . . . . . . . . 32
Multi-Cycle Counter (Serial Only) . . . . . . . 17
Captured Position and Status Read . . . . . 33
Position Capture (Serial Only) . . . . . . . . . 17
Sin, Cos, and Zero ADC Read . . . . . . . . 33
Filter Adaption (Serial Only) . . . . . . . . . . 17
Register Data and Position Read . . . . . . . 33