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TDMA M3090/M3097: DCI (U201)
B24
Description
The DCI (U201) is data converter interface between the DSP and the RF functions of a dual band TDMA transceiver. It incorporates
the following functions:
• Dual channel forward data I and Q(RX_I & RX_Q)
• Two DACs for reverse data I and Q(TX_I & tx_Q)
• DAC for AFC
• DAC for AGC & DAC for reverse PA control
• DAC for PA bias
• Serial Synchronous Interface(SSI)
• Serial Peripheral Interface(SPI)
• Countdown timer for call processor wake-up
• Free-running Real Time Counter to keep track of the time when control processor is stopped
• Internally generates clocks from single master input
• Power saving power-down modes
• Analog wide band forward data signalling functions with SPI interface
• Analog modulator interface
• Analog discriminator interfaces
• RF Discontinuous Receive du ring Manchester decoding
• On chip voltage reference for transmit I and Q
BLOCK DIAGRAM NOT NECESSARY
REFER TO PAGE B25
- TDMA M3090/M3097 1
- Service Manual 1
- Level III 1
- COMPUTER SOFTWARE COPYRIGHTS 2
- About This Manual 4
- Specifications 6
- ©1999Motorola, Inc 7
- Table 3. DAMPS System 7
- Table 4. Environment 7
- Table of Contents 8
- Section B 11
- Cellular Overview 12
- US Cellular Frequency Band 13
- 832 channels 13
- Analog Cellular 16
- Cellular System 17
- AMPS Deviation in kHz 18
- Going Into Service 20
- ©1999 Motorola, Inc 23
- Figure 9. Cell Site Handoffs 25
- Cellular Telephone 26
- Landline Network 26
- Switch / Cell Site 26
- Amplitude (voltage) 28
- Microphone Speaker 30
- Accessories 32
- TDMA Easy NAM 34
- Programming 34
- Programming Sequence 35
- TDMA Test Mode 36
- NAM Programming 36
- IMPORTANT 37
- Factory 38
- Manual Test Mode 42
- Servicing Level 43
- Status Display Line 1 44
- Status Display Line 2 44
- Test Procedures 46
- Zero Bd-P3 47
- RF Cable Test 48
- Set up for Analog call 49
- RX Sensitivity Test (SINAD) 50
- TX Power Out Test 51
- 834.9900 52
- TX Maximum Deviation Test 53
- TX SAT Deviation Test 54
- TX ST Deviation Test 55
- On / Off 56
- ON / Off 56
- Set up for TDMA call 58
- >= -51 59
- < 0.01 59
- BER Measurements 60
- TX Power Measurements 61
- -2.35879 62
- Disassembly 64
- Battery Removal 65
- Antenna Removal 66
- Back Housing Removal 66
- Transceiver Board Removal 67
- Display Removal 67
- Keypad Removal 68
- Speaker Removal 68
- TDMA M3090/M3097Disassembly 69
- Parts List 70
- TDMA M3090/M3097Parts List 71
- General Description 72
- 1900 MHz IC 73
- TX Operational Description 73
- Analog TX Audio Processing 74
- Digital TX Audio Processing 74
- DSP Lucent 1629 74
- Stuart IC 75
- Figure 40. RF Block Diagram 76
- Figure 41. AL Block Diagram 77
- Electrical Parts List 78
- Service Diagrams 84
- Internal External 86
- 800*_1900 87
- -30.47 dBm@Cellular 88
- 992.31MHz 88
- RF_19.44MHZ 90
- TDMA M3090/M3097: VCO 91
- TX SIGNAL 94
- VCC_OFFSET 96
- OVCO_OUT 96
- TDMA M3090/M3097: Amp Drivers 97
- TX ON TX OFF 100
- Description 101
- DET_800_1900 102
- -10 dBm 106
- -11 dBm 106
- TDMA M3090/M3097: DCI (U201) 107
- TDMA M3090/M3097: DCI(U201) 108
- BLOCK DIAGRAM NOT NECESSARY 109
- REFER TO PAGE B27 109
- MIC_BIAS 110
- AUDIO_OUT 110
- [email protected] 110
- VOLTAGE SUPPLIES 112
- SW_EXT_B+ 114
- TDMA M3090/M3097: Charger 115
- Battery type 116
- BLOCK DIAGRAM NOT NECESSARY 117
- REFER TO PAGE B35 117
- U1000,U1500 118
- TDMA M3090/M3097: Headset/MIC 119
- TDMA M3090/M3097: DSP (U1900) 121
- TDMA M3090/M3097: DSP(U1900) 122
- REFER TO PAGE B41 123
- U201,CR1561 124
- REFER TO PAGE B43 125
- BOOM_MIC_DET 126
- U1700,U1200 126
- U1500,U1800 126
- TDMA M3090/M3097: Memory 127
- TDMA M3090/M3097: MEMORY 128
- TDMA M3090/M3097: Keypad 129
- Board Issue: P5 132
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