Analog Devices ADSP-BF506F Hardware Reference Manual page 22

Contents
Programming Examples .............................................................. 12-8
Unique Information for the ADSP-BF50x Processor .................. 12-11
GENERAL-PURPOSE COUNTER
Specific Information for the ADSP-BF50x ................................... 13-1
Overview .................................................................................... 13-2
Features ...................................................................................... 13-2
Interface Overview ..................................................................... 13-3
Description of Operation ............................................................ 13-4
Quadrature Encoder Mode .................................................... 13-4
Binary Encoder Mode ........................................................... 13-5
Up/Down Counter Mode ...................................................... 13-6
Direction Counter Mode ....................................................... 13-6
Timed Direction Mode ......................................................... 13-7
Functional Description ............................................................... 13-7
Input Noise Filtering (Debouncing) ....................................... 13-7
Zero Marker (Push Button) Operation ................................... 13-9
Boundary Comparison Modes ............................................. 13-10
Control and Signaling Events .............................................. 13-11
Illegal Gray/Binary Code Events ...................................... 13-12
Up/Down Count Events ................................................. 13-12
Zero-Count Events ......................................................... 13-13
Overflow Events ............................................................. 13-13
Boundary Match Events .................................................. 13-13
Zero Marker Events ........................................................ 13-14
xxii ADSP-BF50x Blackfin Processor Hardware Reference