TPS65950 datasheet(3/166 Pages) TI

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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

Real-Time Clock and Embedded Power Controller

................................................................. 65

5.1

RTC

.......................................................................................................................... 65

5.1.1

Backup Battery

................................................................................................... 65

5.2

EPC

.......................................................................................................................... 65

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

Ω Stereo Hands-Free ........................................................................................ 68

6.1.2.1

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

USB HS 2.0 OTG Transceiver

............................................................................................... 99

7.1

USB Features

............................................................................................................... 99

7.2

USB Transceiver

.......................................................................................................... 100

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