Vocon Audio Paths, Transmit Audio Path | Motorola SSETM 5000

2-32	Theory of Operation: VOCON Board

Programmable side buttons SB1, SB2, and SB3 are active-low (activated when side button voltage is 0V). When the side buttons are not pressed there are 2 V on the respective lines. S1 is a binary- coded switch. The output pins from U1, which are connected to GPIO pins on the dual-core processor, provide a four-bit binary word (signals RTA0, RTA1, RTA2, and RTA3) to the MCU, indicating to which of the 16 positions the rotary is set.

2.5.5VOCON Audio Paths

This section describes the VOCON transmit and receive audio paths.

2.5.5.1 Transmit Audio Path

Refer to Figure 2-11. The internal microphone audio enters the VOCON board through pin 8 of the M102 contact, and the internal microphone bias is set by circuitry that includes R531, R533, C519 and C521. The internal microphone signal is connected to the MICIN_NEG pin, which is the input terminal on the GCAP II IC internal op-amp A3. The gain of the A3 op-amp is set by the values of R540, R555, and the resistance of EEPOT U509 (digital potentiometer), which is programmed by dual-core processor GPIO lines.

The external microphone audio enters the VOCON board through the remote connector J102, pin 10, and the external microphone bias is set by circuitry that includes R563, R565, C547, and C548. The external microphone signal is connected to the AUX_MIC_NEG pin, which is an input terminal on the GCAP II IC internal op-amp A5. The gain of the A5 op-amp is set by the values of R566, R561, and the resistance of the EEPOT U509.

The dual-core processor, through the SPI bus, programs a multiplexer to select one of the microphone signals. Then, the selected amplified microphone signal goes through a programmable gain amplifier before it goes to the CODEC for A/D conversion. The resulting digital data is filtered and sent to the DSP on the SAP CODEC_TX line from the GCAP II IC TX pin. After additional filtering and processing, the DSP sends the data-out from the STDB pin to the RF interface connector P201 pin 4 (TX_DATA), which is connected to the DAC U203 on the transceiver board.

November 11, 2004

6881094C12-A

Image 54

Motorola SSETM 5000 service manual Vocon Audio Paths, Transmit Audio Path

Contents

SSE Page SSE UHF Range 2 450-488 MHz Portable Radio Foreword Before using this product, read the operating instructionsFor safe usage contained in the Product Safety and RF Exposure booklet enclosed with your radio Table of Contents Chapter Chapter Performance Checks Chapter Radio Alignment Procedures Chapter Encryption Chapter Troubleshooting Tables Chapter TroubleshootingChapter Troubleshooting Charts Chapter Troubleshooting Waveforms Related Publications Appendix a AccessoriesAppendix B Replacement Parts Ordering Glossary Viii November 11 List of Figures MHz Clock Waveform List of Tables Limited Warranty Commercial WarrantySpecial Note on Nypd Warranty Agreement What This Warranty Covers And For How Long II. General Provisions IV. How To Get Warranty ServiceWhat This Warranty Does Not Cover III. State Law Rights VI. Patent And Software Provisions VII. Governing Law Xiv Physical Features of the Radio Radio DescriptionFLASHport Portable Radio Model Numbering System Position SSE 5000 UHF Range 2 450-488 MHz Model Chart Item Number Description Specifications for UHF Range 2 450-488 MHz Radios General Receiver Transmitter Notations Used in This Manual Injury Radio Description Notations Used in This Manual Theory of Operation Major Assemblies Mode of Operation Receiving Transmitting RX LNA V5A Power DistributionPart Number Description V3A V3D Output Description Name DC Power Routing-Transceiver BoardDC Power Routing-VOCON Board V3A Supply Output Supply Type Unprogrammed Circuits Supplied Voltage Output Voltage Transceiver Board Battery Connector J3Vocon Connector P1 Interconnections Antenna Ports Serial Eeprom Receiver Front-End Power Conditioning ComponentsReceiver UHF Range Receiver Back-End Abacus III AD9874 Functional Block Diagram Transmitter Power Distribution Power Amplifier Transistor Q107Driver Amplifier Antenna Switch Directional CouplerHarmonic Filter Power-Control IC Pcic U104 RF Detector D101Pin Name Description VAR1 VAR2Vlim VAR3 Frequency Generation Unit FGU Reference Oscillator Y200Fractional-N Frequency Synthesizer FracN IC U202 Vocon Board Loop FilterVCO Buffer IC Vcobic Transceiver Board Connector P201 Universal Flex Connector J102 Functional Blocks Microcontroller Unit MCU External Interface Module EIM Digital Signal Processor DSP Baseband Interface Port BBP General-Purpose Input/Output Gpio Module System Clocks Audio and Power Gcap II IC U501 Voltage Regulation MCU Interface Audio Circuitry Audio PA Status Mode Voltage Interface Support One-Wire Support USB Transceiver Watchdog Timer KHz Oscillator and Cmos OutputMHz Reference Generation for Gcap II IC Universal Connector and Option Selects Universal Side Connector Pin Number Description Display Module Controls and Control Top FlexFunction Option Select Voltage Vocon Audio Paths Transmit Audio Path Receive Audio Path Gcap II IC U501 Radio Power-Up/Power-Down Sequence Theory of Operation Vocon Board Test Equipment and Service Aids Levels of ServiceTest Equipment 2Test Equipment and Service Aids Test Equipment Part Description Application Service AidsMotorola Number Motorola Service Part Description Application ChipMaster Options Service Level Motorola Part Description Application NumberSOIC-14/SOL-16J Field Programming Test Equipment Setup Performance Checks Radio Test Mode Access the Test ModeSystem Analyzer Test Set Power Supply Display Description Appears ESN No. Display Description Function Tones RF Test ModeTest Channel Astro Control Top Test Mode Test Name System Analyzer Radio Test Set Comments Test Mode CSQReceiver Performance Checks Sinad Transmitter Performance Checks Performance Checks Transmitter Performance Checks Radio Alignment Procedures Radio Alignment Test Setup Reading the Radio Tuner MenuRadio Information Transmitter Alignments SoftpotReference Oscillator Alignment Transmit Power Alignment Band Target Transmit Power Watts Transmit Power Alignment Screen High Power Transmit Deviation Balance Alignment Transmit Deviation Balance Alignment Screen Transmit Deviation Limit Alignment Transmit Deviation Limit Alignment Screen Performance Testing Battery Reading CalibrationTransmitter Test Pattern 11. Battery Reading Calibration Screen Multikey Feature EncryptionLoad an Encryption Key Encryption Multikey Feature Cleaning Disassembly/Reassembly ProceduresGeneral Maintenance Inspection Handling Precautions SSE 5000 Exploded View SSE 5000 Exploded View NNTN4825 KIT, Back Chassis includes items NNTN4826 KIT, Front Chassis includes items Antenna Disassembly/Reassembly Procedures for AccessoriesBattery Attach the Antenna Belt Clip Attach the BatteryRemove the Battery Attach the Belt Clip Remove the Belt Clip Attaching the Belt Clip Carry Case Assembling the Carry Case Remove the Universal Connector Dust Cover Disassembly/Reassembly Procedures for Radio KnobsUniversal Connector Dust Cover Attach the Universal Connector Dust Cover Remove the Volume Knob Install the Channel Select KnobVolume Knob Channel Select Knob Separate the Chassis and Housing Assemblies Disassembly Procedures for SSE 5000 RadioInstall the Volume Knob Disassemble the Chassis Assembly Disassemble the Control Top Disassemble the Housing Baseplate Reassembly Procedures for SSE 5000 Radio Reassemble the Control Top Reassemble the Chassis Assembly Join the Chassis and Housing Assemblies Reassemble the Housing Baseplate November 11 Signal Name Nominal Value Tolerance Vocon Board Source TroubleshootingVoltage Measurement and Signal Tracing Standard Bias Table Power-Up Error Codes Error Description Error Type Corrective Action Code Operational Error Codes Receiver TroubleshootingError Code Description Corrective Action Symptom Possible Cause Corrective Action Transmitter TroubleshootingEncryption Troubleshooting PL, DPL, MDC Troubleshooting Charts List of Troubleshooting Charts Main Troubleshooting Flowchart Vocon Power-Up Failure-Page OK? DC Supply Failure-Page Host C VHF U1 Display Failure-Page Regsel Check Active Low Status on both Reset and CS Volume Set Error Control top/PTT Channel Select Error RTA3 RTA2 RTA1 RTA0 Button Test PTT Top/Side Button Test VCO TX/RX Unlock VCO TX/RX Vocon TX Audio-Page OK? TX RF Vocon RX Audio-Page RX SAP Check Preamp Output Signal At C530 RX RF-Page Rxlo Vocon RX LNA RX RF-Page UHF TX RF-Page Measure RF levels at C723 Temp Keyload Failure Vocon Secure Hardware Failure Synopsis Troubleshooting Charts Secure Hardware Failure Troubleshooting Tables List of Board and IC Signals J102 Side Description Probe Point Connector Pin No Number J707 Description To/From Pin No J701 Description J701 Description To/From Pin No Address ResetADV Ground Data CS1 VPPEnoe CS2 Address Ground Not Used Data Extspkrsel Hostwake BatteryidEepotinc Audiopaen KPROW2 EncresetBoot KPROW3 Adtrig URXD1USBVMIURTS1XRXD URXD2 Spimisob Misob Not Used BtdisableSpimisoa Misoa Not Used Eepromsel Flprcs AbacuscsUnisel Gcapce Usbvmo UCTS1USBSPEEDUTXD1USBVPO Usbtxen Khzint Not Used Batbusen OnewireenKvlusbdet Usbvpi CKO Ebon OeenEB1N Wait RXDIN5V RXDINENC3VTXDOBDI5V RTS Spimosib Mosib Flprcs Uartint GcapresetxOnewireopt Spimisob Misoa TXDOBDIUP3V RTSFILLSEN3V CTSFILLREQ3VTXDOBDIENC3V AD4BDID XTAL2 PRSC2 Battery Auxbat AuxfetXTAL1 LX2 LS3RX PadrvPasense PGM0 Dgnd Dwnout Dwnin Simio AD5VOLUMEAGND3 Cmpout Dscinn Micinneg 10-24 Troubleshooting Waveforms List of Waveforms 11.2 13 MHz Clock MHz Clock Waveform 11.3 16.8 MHz Buffer Input and Output Trace 1 Buffer input at R452 Trace 2 Buffer output at C452 11.4 32.768 kHz Clock Outputs 768 kHz Clock Outputs Waveforms SPI B Data SPI B Data Waveforms Receive Serial Audio Port SAP Receive Serial Audio Port SAP Waveforms Receive Baseband Interface Port RX BBP Receive Baseband Interface Port RX BBP Waveforms Transmit Baseband Interface Port TX BBP Transmit Baseband Interface Port TX BBP Waveforms Schematics, Board Layouts, and Parts Lists List of Vocon Schematics, Board Layouts and Parts Lists Transceiver RF Board Txalc NUE7337 Receiver Front-End Circuit NUE7337 Receiver Back-End Circuit NUE7337 Transmitter and Automatic Level Control Circuits NUE7337 Frequency Generation Unit Synthesizer Circuit-1 NUE7337 Frequency Generation Unit Synthesizer Circuit-2 NUE7337 DC Power NUE7337 Antenna Switch and Harmonic Filter NUE7337 Transceiver RF Board Layout-Side 10. NUE7337 Transceiver RF Board Layout-Side NUE7337 Transceiver RF Board Parts List CAP Chip 12.0 PF 5% COG CAP Chip 8.0PF 16V .5PFCAP Chip 7.0PF 16V .5PF CAP CER Chip 4.7UF Contact RF Connector Connector ContactBattery COIL, 6.8 UH Power HDI Layers MA,.58OHM,SMNotplaced 64AM Dummy Part Number PCB Tstr P-CH Hdtmos IC Temperture Sensor Module Direct CouplerIC VHF/UHF/800 MHZ Ldmos Driver IC PWR Ctrl in MOS20 Schematics, Board Layouts, and Parts Lists Vocon Board 12. NCN6186 Vocon Board Overall Circuit Schematic-Sheet 2 13. NCN6186 Vocon Universal Connector Circuit 14. NCN6186 Vocon Flipper Circuit 15. NCN6186 Vocon Controller and Memory Circuits-Sheet 1 16. NCN6186 Vocon Controller and Memory Circuits-Sheet 2 17. NCN6186 Vocon Audio and DC Circuits 18. NCN6186 Vocon DC Clocks 19. NCN6186 Vocon Display-RF Interface 20. NCN6186 Vocon Spark Gaps 21. NCN6186 Vocon Board Layout-Side 22. NCN6186 Vocon Board Layout-Side NCN6186 Vocon Board Parts List IC Single FET BUS Switch ConnectorCoil 47UH SMT Power LED Stanley Bicolor RED Ohms IC Spdt Switch Power ManagementIC Cmos Bilateral Switch Shield SUB Patriot 23. Control Flex Overall Circuit Schematic Control Flex 24. Control Flex Board Layout-Side 26. Universal Flex Overall Circuit Schematic Universal Flex 27. Universal Flex Board Layout-Side 29. UCM Flex Overall Circuit Schematic 12.5 UCM 30. UCM Board Layout-Side Appendix a Accessories Surveillance Accessories Keyload AccessoriesMicrophones and Microphone Accessories Programming Cables Appendix B Replacement Parts Ordering Product Customer Service Fax OrdersParts Identification Glossary ALC Codeplug Term Definition Epot KVL MCU OSW Reset Sram Tsop Glossary-10 November 11 Index Vocon Specifications Index-3 Index-4 Page 6881094C12-A Motorola, Inc West Sunrise Boulevard Ft. Lauderdale, FL