Information

Section Number Title Page
51.1.2 Modes of operation......................................................................................................................................1557
51.1.3 GPIO signal descriptions.............................................................................................................................1558
51.2 Memory map and register definition.............................................................................................................................1559
51.2.1 Port Data Output Register (GPIOx_PDOR).................................................................................................1562
51.2.2 Port Set Output Register (GPIOx_PSOR)....................................................................................................1562
51.2.3 Port Clear Output Register (GPIOx_PCOR)................................................................................................1563
51.2.4 Port Toggle Output Register (GPIOx_PTOR).............................................................................................1563
51.2.5 Port Data Input Register (GPIOx_PDIR).....................................................................................................1564
51.2.6 Port Data Direction Register (GPIOx_PDDR).............................................................................................1564
51.3 Functional description...................................................................................................................................................1565
51.3.1 General purpose input..................................................................................................................................1565
51.3.2 General purpose output................................................................................................................................1565
Chapter 52
Touch sense input (TSI)
52.1 Introduction...................................................................................................................................................................1567
52.2 Features.........................................................................................................................................................................1567
52.3 Overview.......................................................................................................................................................................1568
52.3.1 Electrode capacitance measurement unit.....................................................................................................1568
52.3.2 Electrode scan unit.......................................................................................................................................1569
52.3.3 Touch detection unit.....................................................................................................................................1570
52.4 Modes of operation.......................................................................................................................................................1570
52.4.1 TSI disabled mode.......................................................................................................................................1570
52.4.2 TSI active mode...........................................................................................................................................1570
52.4.3 TSI low power mode....................................................................................................................................1571
52.4.4 Block diagram..............................................................................................................................................1571
52.5 TSI signal descriptions..................................................................................................................................................1572
52.5.1 TSI_IN[15:0]................................................................................................................................................1572
52.6 Memory map and register definition.............................................................................................................................1572
52.6.1 General Control and Status Register (TSIx_GENCS).................................................................................1574
K20 Sub-Family Reference Manual, Rev. 6, Nov 2011
50 Freescale Semiconductor, Inc.