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TPS65950BZXN Fiches technique(PDF) 3 Page - Texas Instruments |
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TPS65950BZXN Fiches technique(HTML) 3 Page - Texas Instruments |
3 / 166 page TPS65950 Integrated Power Management/Audio Codec www.ti.com SWCS032A – OCTOBER 2008 – REVISED DECEMBER 2008 4.5.3.3 OMAP3 Power-On Sequence ....................................................................... 63 4.5.4 Power-Off Sequence ............................................................................................ 63 4.5.4.1 Power-Off Sequence in Master Modes ............................................................ 64 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 ............................................... 71 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 ................................................................................................ 77 6.1.6.1 Vibrator H-Bridge Output Characteristics .......................................................... 77 6.1.6.2 External Components and Application Schematic ............................................... 78 6.1.7 Carkit Output ..................................................................................................... 78 6.1.8 Digital Audio Filter Module ..................................................................................... 79 6.1.9 Digital Voice Filter Module ..................................................................................... 80 6.1.9.1 Voice Downlink Filter (Sampling Frequency at 8 kHz) ........................................... 80 6.1.9.2 Voice Downlink Filter (Sampling Frequency at 16 kHz) ......................................... 81 6.1.10 Boost Stage ..................................................................................................... 82 6.2 Audio/Voice Uplink (TX) Module ......................................................................................... 83 6.2.1 Microphone Bias Module ....................................................................................... 83 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 ................................................. 88 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 6.2.6 Uplink Characteristics ........................................................................................... 92 6.2.7 Microphone Amplification Stage ............................................................................... 93 6.2.8 Carkit Input ....................................................................................................... 93 6.2.9 Digital Audio Filter Module ..................................................................................... 94 6.2.10 Digital Voice Filter Module ..................................................................................... 95 6.2.10.1 Voice Uplink Filter (Sampling Frequency at 8 kHz) ............................................. 95 6.2.10.2 Voice Uplink Filter (Sampling Frequency at 16 kHz) ........................................... 97 7 USB HS 2.0 OTG Transceiver ............................................................................................... 99 7.1 USB Features ............................................................................................................... 99 7.2 USB Transceiver .......................................................................................................... 100 Contents 3 |
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