Справочник ПользователяСодержаниеDocument History8Introduction10Related Documents10Terms and Abbreviations10Regulatory and Type Approval Information131.3.1 Directives and Standards131.3.2 SAR requirements specific to portable mobiles151.3.3 SELV Requirements161.3.4 Safety Precautions16Product Concept182.1 Key Features at a Glance182.2 PCS3 System Overview202.3 Circuit Concept21Application Interface22Operating Modes23Power Supply243.2.1 Monitoring Power Supply by AT Command25Power-Up / Power-Down Scenarios263.3.1 Turn on PCS3263.3.2 Signal States after Startup273.3.3 Turn off PCS3 Using AT Command283.3.4 Configuring the IGT Line for Use as ON/OFF Switch293.3.5 Automatic Shutdown303.3.5.1 Thermal Shutdown313.3.5.2 Undervoltage Shutdown323.3.5.3 Overvoltage Shutdown323.3.6 Automatic Reset323.3.7 Turn off PCS3 in Case of Emergency33Power Saving343.4.1 Power Saving while Attached to CDMA Networks343.4.2 Timing of the CTS0 Signal, CDMA343.4.3 Wake up from or Disabling Power Saving35RTC Backup36USB Interface373.6.1 Reducing Power Consumption38Serial Interface ASC039Analog Audio Interface413.8.1 Microphone Inputs and Supply423.8.2 Loudspeaker Output45Digital Audio Interface463.9.1 Pulse Code Modulation Interface (PCM)463.9.2 Inter I2C Interface48Control Signals503.10.1 PWR_IND Signal503.10.2 Network Connectivity Status Signals503.10.3 Behavior of the RING0 Line (ASC0 Interface only)513.10.4 Host Wakeup513.10.5 Low Current Indicator523.10.6 RING0 (ASC0), WAKEUP and LCI_IND Startup Behavior53Antenna Interfaces554.1 CDMA Antenna Interface554.1.1 Antenna Installation564.1.2 RF Line Routing Design574.1.2.1 Line Arrangement Examples574.1.2.2 Routing Example59Electrical, Reliability and Radio Characteristics62Absolute Maximum Ratings62Operating Temperatures63Storage Conditions63Reliability Characteristics64Pad Assignment and Signal Description64Power Supply Ratings72Electrical Characteristics of the Voiceband Part735.7.1 Setting Audio Parameters by AT Commands735.7.2 Audio Programming Model745.7.3 Characteristics of Audio Modes755.7.4 Voiceband Receive Path775.7.5 Voiceband Transmit Path77RF Antenna Interface Characteristics78Electrostatic Discharge79Mechanics, Mounting and Packaging816.1 Mechanical Dimensions of PCS3816.2 Mounting PCS3 onto the Application Platform836.2.1 SMT PCB Assembly836.2.1.1 Land Pattern and Stencil836.2.1.2 Board Level Characterization856.2.2 Moisture Sensitivity Level856.2.3 Soldering Conditions and Temperature866.2.3.1 Reflow Profile866.2.3.2 Maximum Temperature and Duration87Durability and Mechanical Handling886.3.1.1 Storage Life886.3.1.2 Processing Life886.3.1.3 Baking886.3.1.4 Electrostatic Discharge88Packaging896.4.1 Tape and Reel896.4.1.1 Orientation896.4.1.2 Barcode Label906.4.2 Shipping Materials916.4.2.1 Moisture Barrier Bag916.4.2.2 Transportation Box93Sample Application94Reference Approval96Reference Equipment for Type Approval96Compliance with FCC and IC Rules and Regulations97Appendix989.1 List of Parts and Accessories989.2 Mounting Advice Sheet100Directives13Standards of North American type approval13Requirements of quality13People’s Republic of China14limits14Overview of operating modes23Signal states.27Temperature dependent behavior31DCE-DTE wiring of ASC040Feedback resistor values versus input gain43Configuration combinations for the PCM interface46Overview of PCM signal functions46Overview of I2C signal functions48Host wakeup lines51Low current indicator line52Return loss in the active band55Absolute maximum ratings62Board temperature63Storage conditions63Summary of reliability test conditions64Overview: Pad assignments65Signal description68Power supply ratings72Audio parameters adjustable by AT command73Voiceband characteristics75Voiceband receive path.77Voiceband transmit path77RF Antenna interface CDMA.78Electrostatic values80Reflow temperature ratings87List of parts and accessories.98Molex sales contacts (subject to change)99Hirose sales contacts (subject to change)99PCS3 system overview20PCS3 block diagram21Decoupling capacitor(s) for BATT+24Power-on with IGT26Signal states during turn-off procedure28Timing of IGT if used as ON/OFF switch29Shutdown by EMERG_OFF signal33RTC supply variants36USB circuit37Serial interface ASC039Structure of Audio Input and Supply42Single ended microphone connection44Differential microphone connection44Line input45Differential loudspeaker connection45Line output connection45PCM timing short frame (master/slave, 256, 512 or 2048KHz)47PCM timing long frame (master, 128kHz)47I2C interface timing49Dual microphone design example with I2S interface49PWR_IND signal50LED Circuit (Example).50Low current indication timing52RING0 (ASC0), WAKEUP and LCI_IND startup behavior53Antenna pads56Coated coplanar strip with ground57Differnetia coated coplanar strip with ground58Routing to application‘s RF connector59PCS3 evaluation board layer table59PCS3 bottom view: Pad assignments66Audio programming model74PCS3 – top and bottomview81Dimensions of PCS3 (all dimensions in mm)82Land pattern (top view)83Recommended design for 110 micron thick stencil (top view)84Recommended design for 150 micron thick stencil (top view)84Reflow Profile86Carrier tape89Roll direction89Barcode label on tape reel90Moisture barrier bag (MBB) with imprint91Moisture Sensitivity Label92Humidity Indicator Card - HIC93PCS3 sample application95Reference equipment for type approval96Размер: 1,5 МБСтраницы: 93Язык: EnglishПросмотреть