LM3S2939 Datasheet, PDF (8/749 Pages) Texas Instruments – Stellaris® LM3S2939 Microcontroller

Table of Contents
16 Analog Comparators ............................................................................................ 596
16.1 Block Diagram ............................................................................................................ 597
16.2 Signal Description ....................................................................................................... 597
16.3 Functional Description ................................................................................................. 598
16.3.1 Internal Reference Programming .................................................................................. 599
16.4 Initialization and Configuration ..................................................................................... 600
16.5 Register Map .............................................................................................................. 600
16.6 Register Descriptions .................................................................................................. 601
17 Pulse Width Modulator (PWM) ............................................................................ 609
17.1 Block Diagram ............................................................................................................ 610
17.2 Signal Description ....................................................................................................... 611
17.3 Functional Description ................................................................................................. 612
17.3.1 PWM Timer ................................................................................................................. 612
17.3.2 PWM Comparators ...................................................................................................... 612
17.3.3 PWM Signal Generator ................................................................................................ 613
17.3.4 Dead-Band Generator ................................................................................................. 614
17.3.5 Interrupt/ADC-Trigger Selector ..................................................................................... 614
17.3.6 Synchronization Methods ............................................................................................ 614
17.3.7 Fault Conditions .......................................................................................................... 615
17.3.8 Output Control Block ................................................................................................... 615
17.4 Initialization and Configuration ..................................................................................... 615
17.5 Register Map .............................................................................................................. 616
17.6 Register Descriptions .................................................................................................. 617
18 Quadrature Encoder Interface (QEI) ................................................................... 647
18.1 Block Diagram ............................................................................................................ 647
18.2 Signal Description ....................................................................................................... 648
18.3 Functional Description ................................................................................................. 649
18.4 Initialization and Configuration ..................................................................................... 651
18.5 Register Map .............................................................................................................. 651
18.6 Register Descriptions .................................................................................................. 652
19 Pin Diagram .......................................................................................................... 665
20 Signal Tables ........................................................................................................ 667
20.1 100-Pin LQFP Package Pin Tables ............................................................................... 667
20.1.1 Signals by Pin Number ................................................................................................ 667
20.1.2 Signals by Signal Name ............................................................................................... 671
20.1.3 Signals by Function, Except for GPIO ........................................................................... 675
20.1.4 GPIO Pins and Alternate Functions .............................................................................. 678
20.2 108-Ball BGA Package Pin Tables ................................................................................ 680
20.2.1 Signals by Pin Number ................................................................................................ 680
20.2.2 Signals by Signal Name ............................................................................................... 684
20.2.3 Signals by Function, Except for GPIO ........................................................................... 688
20.2.4 GPIO Pins and Alternate Functions .............................................................................. 691
20.3 Connections for Unused Signals ................................................................................... 693
21 Operating Characteristics ................................................................................... 695
22 Electrical Characteristics .................................................................................... 696
22.1 DC Characteristics ...................................................................................................... 696
22.1.1 Maximum Ratings ....................................................................................................... 696
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June 18, 2012
Texas Instruments-Production Data