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TPS65950A2ZXN Datasheet(PDF) 3 Page - Texas Instruments |
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TPS65950A2ZXN Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 171 page  TPS65950 www.ti.com SWCS032E – OCTOBER 2008 – REVISED JANUARY 2011 4.5.2.1 C027.0 Mode ....................................................................................... 59 4.5.2.2 C021.M Mode ...................................................................................... 59 4.5.3 Power-On Sequence ........................................................................................... 59 4.5.3.1 Timings Before Sequence_Start ................................................................. 59 4.5.3.2 OMAP2 Power-On Sequence .................................................................... 60 4.5.3.3 OMAP3 Power-On Sequence .................................................................... 61 4.5.3.4 Power On in Slave_C021_Generic Mode ....................................................... 63 4.5.4 Power-Off Sequence ........................................................................................... 63 4.5.4.1 Power-Off Sequence in Master Modes .......................................................... 63 5 Real-Time Clock and Embedded Power Controller ................................................................. 65 5.1 RTC ......................................................................................................................... 65 5.1.1 Backup Battery .................................................................................................. 65 5.2 EPC ......................................................................................................................... 65 6 Audio/Voice Module ........................................................................................................... 66 6.1 Audio/Voice Downlink (RX) Module ..................................................................................... 67 6.1.1 Earphone Output ................................................................................................ 67 6.1.1.1 Earphone Output Characteristics ................................................................ 67 6.1.1.2 External Components and Application Schematic ............................................. 68 6.1.2 8- Ω Stereo Hands-Free ........................................................................................ 68 6.1.2.1 8- Ω Stereo Hands-Free Output Characteristics ................................................ 68 6.1.2.2 External Components and Application Schematic ............................................. 69 6.1.3 Headset .......................................................................................................... 70 6.1.3.1 Headset Output Characteristics .................................................................. 70 6.1.3.2 External Components and Application Schematic ............................................. 72 6.1.4 Headset Pop-Noise Attenuation .............................................................................. 75 6.1.5 Predriver for External Class-D Amplifier ..................................................................... 76 6.1.5.1 Predriver Output Characteristics ................................................................. 76 6.1.5.2 External Components and Application Schematic ............................................. 77 6.1.6 Vibrator H-Bridge ............................................................................................... 78 6.1.6.1 Vibrator H-Bridge Output Characteristics ....................................................... 78 6.1.6.2 External Components and Application Schematic ............................................. 78 6.1.7 Carkit Output .................................................................................................... 79 6.1.8 Digital Audio Filter Module .................................................................................... 80 6.1.9 Digital Voice Filter Module ..................................................................................... 80 6.1.9.1 Voice Downlink Filter (Sampling Frequency at 8 kHz) ........................................ 81 6.1.9.2 Voice Downlink Filter (Sampling Frequency at 16 kHz) ...................................... 82 6.1.10 Boost Stage ..................................................................................................... 82 6.2 Audio/Voice Uplink (TX) Module ......................................................................................... 84 6.2.1 Microphone Bias Module ...................................................................................... 84 6.2.1.1 Analog Microphone Bias Module Characteristics .............................................. 85 6.2.1.2 External Components and Application Schematic ............................................. 86 6.2.1.3 Digital Microphone Bias Module Characteristics ............................................... 87 6.2.1.4 Silicon Microphone Characteristics .............................................................. 89 6.2.2 Stereo Differential Input ........................................................................................ 90 6.2.3 Headset Differential Input ...................................................................................... 90 6.2.4 FM Radio/Auxiliary Stereo Input .............................................................................. 91 6.2.4.1 External Components ............................................................................. 91 6.2.5 PDM Interface for Digital Microphones ...................................................................... 91 Copyright © 2008–2011, Texas Instruments Incorporated Contents 3 |
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