User's Manual
Table Of Contents
- Copyright
- Attention
- Trademark
- Versions
- Foreword
- Product Overview
- Structure
- Hardware Introduction
- Hardware Interface
- Power Interface
- Power on/off and Reset Signal
- Status Indicating Signal
- USB /SSIC Interface
- USIM Interface
- Digital Audio
- Win8/Android Switch Control Interface
- W_DISABLE# Interface
- TX_BLANKING Interface
- WAKEUP_Host Interface
- BODY_SAR Interface
- I2C Interface
- Clock Interface
- Config Interface
- RF Interface
- Other Interfaces
- Electrical and Environmental Features
- RF Interface
L830-EA M.2 Module Hardware User Manual Page
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5.5.2 USIM Interface Design....................................................................................................................30
5.5.2.1 “Normal Closed” SIM Card Circuit Design....................................................................... 30
5.5.2.2 “Normally Open” SIM Circuit Design.................................................................................30
5.5.3 Points for Attention in USIM Design............................................................................................. 31
5.5.4 USIM Hot-Plugging..........................................................................................................................32
5.5.4.1 Hardware Connection..........................................................................................................32
5.5.4.2 Software Settings................................................................................................................. 32
5.6 Digital Audio................................................................................................................................................. 33
5.6.1 I2S Interface..................................................................................................................................... 33
5.6.2 PCM Port Description..................................................................................................................... 33
5.7 Win8/Android Switch Control Interface................................................................................................... 34
5.8 W_DISABLE# Interface............................................................................................................................. 35
5.8.1 Description of WWAN_DISABLE# Interface...............................................................................35
5.8.2 GPS_DISABLE# Interface............................................................................................................. 35
5.9 TX_BLANKING Interface........................................................................................................................... 35
5.10 WAKEUP_Host Interface.........................................................................................................................36
5.11 BODY_SAR Interface...............................................................................................................................36
5.12 I2C Interface.............................................................................................................................................. 36
5.13 Clock Interface.......................................................................................................................................... 37
5.14 Config Interface......................................................................................................................................... 37
5.15 RF Interface............................................................................................................................................... 37
5.15.1 RF Connector Interface................................................................................................................ 37
5.15.2 RF Connecting Seat......................................................................................................................38
5.15.3 Main Performance of RF Connector.......................................................................................... 39
5.16 Other Interfaces........................................................................................................................................ 39
6 Electrical and Environmental Features...............................................................................................................39
6.1 Electrical Features...................................................................................................................................... 39
6.2 Environmental Features.............................................................................................................................40
7 RF Interface.............................................................................................................................................................41
7.1 Operating Frequency Band....................................................................................................................... 41
7.2 Receiving Sensitivity...................................................................................................................................42
7.3 GNSS............................................................................................................................................................ 43
7.4 RF PCB Design........................................................................................................................................... 43
7.4.1 Wiring Principle................................................................................................................................ 43