IC-TW8_13 Datasheet, PDF (28/63 Pages) IC-Haus GmbH – 16-BIT SIN/COS INTERPOLATOR WITH AUTO-CALIBRATION

iC-TW8 16-BIT SIN/COS INTERPOLATOR
Serial Configuration Mode
preliminary
Jan 9, 2013 Page SC1/36
Table of Contents
About This Document ........................................... 2
Documentation Conventions................................. 2
Functional Overview ............................................. 3
Functional Block Diagram.................................... 4
Clock Generator .................................................. 4
Power-On Reset .................................................. 4
Serial Ports .......................................................... 4
EEPROM Interface ............................................. 4
Internal Memory ................................................. 4
AB Signal Path.................................................... 5
Analog Gain.................................................... 5
Analog Offset Correction ............................... 5
Analog-to-Digital Converters (ADCs)............ 5
Digital Offset Correction ................................ 5
Digital Gain Match Correction ....................... 5
Digital Phase Correction ................................. 6
Angle Calculation (Arctan)............................. 6
Sensor Distortion LUT ................................... 6
Filter................................................................ 6
Digital Hysteresis............................................ 8
Interpolation Factor ........................................ 8
Output Generator ............................................ 8
Z Signal Path ....................................................... 8
Auto Calibration and Auto Adaption .................. 8
Auto Store ........................................................... 9
Fault Handling..................................................... 9
ADC and Adaption Quality Monitors ................. 9
Electrical Connections ........................................ 10
Providing a Clock.............................................. 11
Connecting the EEPROM ................................. 12
Connecting the Incremental Sensor .................. 12
Connecting an Index Sensor (If Used) .............. 13
Connecting the ABZ Outputs............................ 14
Connecting the Serial Ports............................... 14
Power-on-Reset................................................. 14
Startup.................................................................. 15
Serial Configuration Overview .......................... 15
Rotary Encoder Design Tool .............................. 16
General Configuration ...................................... 16
AB Configuration ............................................. 18
Filter Configuration .......................................... 19
Z Configuration................................................. 21
Auto Adaption Configuration ........................... 21
FAULT Pin Configuration................................ 22
ADC Quality Monitor ....................................... 23
Adaption Quality Monitor ................................ 24
STATUS Pin Configuration.............................. 24
LUT Configuration ........................................... 24
CFG Block ........................................................ 24
GUI Hex............................................................ 24
Auto Calibration.................................................. 25
Calibrating the Z Signal Path ............................ 26
No Index Sensor................................................ 26
Digital Output Index Sensor ............................. 27
Analog Output Index Sensor............................. 28
Using Serial-Only Output Mode ........................ 30
Using PWM Output Mode.................................. 31
Using the Post-AB Divider.................................. 32
Tuning the Internal Oscillator ........................... 33
Using the LUT ..................................................... 34
Revision History .................................................. 36
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