WM8352 datasheet(6/336 Pages) WOLFSON

6 / 336 page

WM8352

Production Data

PD, February 2011, Rev 4.4

13.12.2

MICROPHONE DETECTION ............................................................................................. 100

13.12.3

MID-RAIL REFERENCE (VMID) ........................................................................................ 101

13.12.4

ANTI-POP CONTROL........................................................................................................ 102

13.12.5

UNUSED ANALOGUE INPUTS/OUTPUTS ....................................................................... 103

13.12.6

ZERO CROSS TIMEOUT .................................................................................................. 105

13.12.7

INTERRUPTS AND FAULT PROTECTION ....................................................................... 105

POWER MANAGEMENT SUBSYSTEM....................................................106

14.1

GENERAL DESCRIPTION ........................................................................... 106

14.2

POWER MANAGEMENT OPERATING STATES ......................................... 106

14.2.1

HIBERNATE STATE SELECTION ..................................................................................... 107

14.3

POWER SEQUENCING AND CONTROL .................................................... 108

14.3.1

STARTUP .......................................................................................................................... 108

14.3.2

POWER-UP SEQUENCING .............................................................................................. 109

14.3.3

SHUTDOWN...................................................................................................................... 109

14.3.4

POWER CYCLING ............................................................................................................ 110

14.3.5

REGISTER RESET............................................................................................................ 110

14.3.6

RESET SIGNALS............................................................................................................... 111

14.4

DEVELOPMENT MODE ............................................................................... 112

14.4.1

CONTROL INTERFACE REDIRECTION........................................................................... 112

14.4.2

STARTING UP IN DEVELOPMENT MODE ....................................................................... 113

14.4.3

CONFIGURING THE WM8352 IN DEVELOPMENT MODE .............................................. 115

14.5

CUSTOM MODES ........................................................................................ 117

14.5.1

CONFIGURATION MODE 01 ............................................................................................ 117

14.5.2

CONFIGURATION MODE 10 ............................................................................................ 120

14.5.3

CONFIGURATION MODE 11 ............................................................................................ 123

14.6

CONFIGURING THE DC-DC CONVERTERS .............................................. 126

14.6.1

DC-DC CONVERTER ENABLE ......................................................................................... 126

14.6.2

CLOCKING ........................................................................................................................ 127

14.6.3

DC-DC BUCK (STEP-DOWN) CONVERTER CONTROL.................................................. 127

14.6.4

DC-DC BOOST (STEP-UP) CONVERTER CONTROL...................................................... 130

14.6.5

INTERRUPTS AND FAULT PROTECTION ....................................................................... 132

14.7

CONFIGURING THE LDO REGULATORS .................................................. 135

14.7.1

LDO REGULATOR ENABLE ............................................................................................. 135

14.7.2

LDO REGULATOR CONTROL .......................................................................................... 136

14.7.3

INTERRUPTS AND FAULT PROTECTION ....................................................................... 138

14.7.4

ADDITIONAL CONTROL FOR LDO1 ................................................................................ 139

14.8

DC-DC CONVERTER OPERATION............................................................. 140

14.8.1

OVERVIEW........................................................................................................................ 140

14.8.2

DC-DC STEP DOWN CONVERTERS ............................................................................... 141

14.8.3

DC-DC STEP UP CONVERTERS...................................................................................... 142

14.9

LDO REGULATOR OPERATION ................................................................. 143

CURRENT LIMIT SWITCH ........................................................................144

15.1

GENERAL DESCRIPTION ........................................................................... 144

15.2

CONFIGURING THE CURRENT LIMIT SWITCH......................................... 144

15.2.1

CURRENT LIMIT SWITCH ENABLE ................................................................................. 144

15.2.2

CURRENT LIMIT SWITCH BULK DETECTION CONTROL .............................................. 145

15.2.3

INTERRUPTS AND FAULT PROTECTION ....................................................................... 145

CURRENT SINKS (LED DRIVERS) ..........................................................147

16.1

GENERAL DESCRIPTION ........................................................................... 147

16.2

CONSTANT-CURRENT SINKS.................................................................... 147

16.2.1

ENABLING THE SINK CURRENT ..................................................................................... 147

16.2.2

PROGRAMMING THE SINK CURRENT............................................................................ 148

16.2.3

FLASH MODE.................................................................................................................... 148

16.2.4

ON/OFF RAMP TIMING..................................................................................................... 150

16.2.5

INTERRUPTS AND FAULT PROTECTION ....................................................................... 150

WM8352 Datasheet(PDF) 6 Page - Wolfson Microelectronics plc

WM8352 Datasheet(HTML) 6 Page - Wolfson Microelectronics plc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL