Information

Section Number Title Page
41.3 Module signal descriptions...........................................................................................................................................926
41.4 Memory map/Register definition..................................................................................................................................927
41.4.1 Control register (USBDCD_CONTROL)....................................................................................................928
41.4.2 Clock register (USBDCD_CLOCK)............................................................................................................930
41.4.3 Status register (USBDCD_STATUS)..........................................................................................................931
41.4.4 TIMER0 register (USBDCD_TIMER0)......................................................................................................932
41.4.5 TIMER1 register (USBDCD_TIMER1)......................................................................................................933
41.4.6 TIMER2 register (USBDCD_TIMER2)......................................................................................................934
41.5 Functional description...................................................................................................................................................935
41.5.1 The charger detection sequence...................................................................................................................936
41.5.2 Interrupts and events....................................................................................................................................945
41.5.3 Resets...........................................................................................................................................................947
41.6 Initialization information..............................................................................................................................................948
41.7 Application information................................................................................................................................................948
41.7.1 External pullups...........................................................................................................................................948
41.7.2 Dead or weak battery...................................................................................................................................948
41.7.3 Handling unplug events...............................................................................................................................949
Chapter 42
USB Voltage Regulator
42.1 Introduction...................................................................................................................................................................951
42.1.1 Overview......................................................................................................................................................951
42.1.2 Features........................................................................................................................................................952
42.1.3 Modes of Operation.....................................................................................................................................953
42.2 USB Voltage Regulator Module Signal Descriptions..................................................................................................953
Chapter 43
SPI (DSPI)
43.1 Introduction...................................................................................................................................................................955
43.1.1 Block Diagram.............................................................................................................................................955
43.1.2 Features........................................................................................................................................................956
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 35