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