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TC65 Hardware Interface Description
Confidential / Released
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TC65_HD_V02.000 Page 4 of 120 08.06.2006
3.7 Summary of State Transitions (Except SLEEP Mode)........................................50
3.8 RTC Backup.......................................................................................................51
3.9 SIM Interface......................................................................................................52
3.10 Serial Interface ASC0.........................................................................................53
3.11 Serial Interface ASC1.........................................................................................55
3.12 USB Interface.....................................................................................................56
3.12.1 Installing the USB Modem Driver..........................................................57
3.13 I
2
C Interface .......................................................................................................59
3.14 SPI Interface ......................................................................................................61
3.15 Audio Interfaces.................................................................................................63
3.15.1 Speech Processing...............................................................................64
3.15.2 Microphone Circuit................................................................................64
3.15.2.1 Single-ended Microphone Input............................................................65
3.15.2.2 Differential Microphone Input................................................................66
3.15.2.3 Line Input Configuration with OpAmp ...................................................67
3.15.3 Loudspeaker Circuit..............................................................................68
3.15.4 Digital Audio Interface DAI ...................................................................69
3.16 Analog-to-Digital Converter (ADC) .....................................................................71
3.17 GPIO Interface...................................................................................................72
3.17.1 Using the GPIO10 Pin as Pulse Counter ..............................................72
3.18 Control Signals...................................................................................................73
3.18.1 Synchronization Signal .........................................................................73
3.18.2 Using the SYNC Pin to Control a Status LED.......................................74
3.18.3 Behavior of the RING0 Line (ASC0 Interface only)...............................75
3.18.4 PWR_IND Signal..................................................................................75
4 Antenna Interface......................................................................................................76
4.1 Antenna Installation............................................................................................76
4.2 Antenna Pad ......................................................................................................78
4.2.1 Suitable Cable Types ...........................................................................78
4.3 Antenna Connector ............................................................................................79
5 Electrical, Reliability and Radio Characteristics.....................................................83
5.1 Absolute Maximum Ratings................................................................................83
5.2 Operating Temperatures....................................................................................84
5.3 Storage Conditions.............................................................................................85
5.4 Reliability Characteristics ...................................................................................86
5.5 Pin Assignment and Signal Description..............................................................87
5.6 Power Supply Ratings........................................................................................95
5.7 Electrical Characteristics of the Voiceband Part.................................................98
5.7.1 Setting Audio Parameters by AT Commands .......................................98
5.7.2 Audio Programming Model ...................................................................99
5.7.3 Characteristics of Audio Modes ..........................................................100
5.7.4 Voiceband Receive Path ....................................................................101
5.7.5 Voiceband Transmit Path ...................................................................102
5.8 Air Interface .....................................................................................................103
5.9 Electrostatic Discharge ....................................................................................104
6 Mechanics................................................................................................................105
6.1 Mechanical Dimensions of TC65......................................................................105
6.2 Mounting TC65 to the Application Platform ......................................................107
6.3 Board-to-Board Application Connector.............................................................108
7 Sample Application .................................................................................................111
- Hardware Interface Descri 1
- Contents 3
- Figures 6
- 0 Document History 7
- 1 Introduction 10
- 1.2 Terms and Abbreviations 11
- 1.3 Type Approval 14
- 1.4 Safety Precautions 16
- 2 Product Concept 18
- 2.2 TC65 System Overview 21
- 2.3 Circuit Concept 22
- 3 Application Interface 23
- 3.1 Operating Modes 24
- 3.2 Power Supply 26
- 3.3.1 Turn on TC65 28
- 31
- Table 6: Signal states 34
- 3.3.3 Turn off TC65 36
- 3.3.4 Automatic Shutdown 39
- 3.3.4.5 Overvoltage Shutdown 41
- 3.5 Charging Control 43
- 3.5.1 Hardware Requirements 43
- 3.5.2 Software Requirements 43
- 3.5.4 Charger Requirements 45
- 3.6 Power Saving 48
- AT interface disabled 49
- AT interface enabled 49
- 3.8 RTC Backup 51
- 3.9 SIM Interface 52
- 3.10 Serial Interface ASC0 53
- 3.11 Serial Interface ASC1 55
- 3.12 USB Interface 56
- C Interface 59
- Figure 20: I 60
- 3.14 SPI Interface 61
- SPI MODE 0 SPI MODE 1 62
- SPI MODE 2 SPI MODE 3 62
- Clock phase 62
- Clock polarity 62
- 3.15 Audio Interfaces 63
- 3.15.1 Speech Processing 64
- 3.15.2 Microphone Circuit 64
- GSM module 68
- Figure 29: PCM timing 70
- 3.17 GPIO Interface 72
- 3.18 Control Signals 73
- 3.18.4 PWR_IND Signal 75
- 4 Antenna Interface 76
- Antenna 77
- 4.2 Antenna Pad 78
- 4.2.1 Suitable Cable Types 78
- 4.3 Antenna Connector 79
- 5.2 Operating Temperatures 84
- 5.3 Storage Conditions 85
- EMRG_RST 89
- 5.6 Power Supply Ratings 95
- 5.7.4 Voiceband Receive Path 101
- 5.8 Air Interface 103
- 5.9 Electrostatic Discharge 104
- 6 Mechanics 105
- Confidential / Released 106
- 7 Sample Application 111
- 8 Reference Approval 113
- 9 Appendix 115
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