Information

Section Number Title Page
41.3 Module signal descriptions...........................................................................................................................................928
41.4 Memory map/Register definition..................................................................................................................................929
41.4.1 Control register (USBDCD_CONTROL)....................................................................................................930
41.4.2 Clock register (USBDCD_CLOCK)............................................................................................................932
41.4.3 Status register (USBDCD_STATUS)..........................................................................................................933
41.4.4 TIMER0 register (USBDCD_TIMER0)......................................................................................................934
41.4.5 TIMER1 register (USBDCD_TIMER1)......................................................................................................935
41.4.6 TIMER2 register (USBDCD_TIMER2)......................................................................................................936
41.5 Functional description...................................................................................................................................................937
41.5.1 The charger detection sequence...................................................................................................................938
41.5.2 Interrupts and events....................................................................................................................................947
41.5.3 Resets...........................................................................................................................................................949
41.6 Initialization information..............................................................................................................................................950
41.7 Application information................................................................................................................................................950
41.7.1 External pullups...........................................................................................................................................950
41.7.2 Dead or weak battery...................................................................................................................................950
41.7.3 Handling unplug events...............................................................................................................................951
Chapter 42
USB Voltage Regulator
42.1 Introduction...................................................................................................................................................................953
42.1.1 Overview......................................................................................................................................................953
42.1.2 Features........................................................................................................................................................954
42.1.3 Modes of Operation.....................................................................................................................................955
42.2 USB Voltage Regulator Module Signal Descriptions..................................................................................................955
Chapter 43
SPI (DSPI)
43.1 Introduction...................................................................................................................................................................957
43.1.1 Block Diagram.............................................................................................................................................957
43.1.2 Features........................................................................................................................................................958
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 35