13
3.1.2 Features
Baseband
• High performance fixed-point TEAKlite DSP
• C166S high performance microcontroller
• There are several Interfaces:
– I2S interface for DAI connections (for Tape Approval)
– High Speed SSC Interface for connection of external peripherals
– SIM Interface
– Keypad Interface (6x4 or 5x5 keys)
– EBU for external RAM/FLASH connection
– Asynchronous serial interface (incl. IrDA support capability)
– JTAG Interface
– Black & white and color displays are supported
– PWM source to drive vibrator
– Keypad and display backlight supported.
Receiver
• Constant gain, direct conversion receiver with fully integrated blocking filter
• Two integrated LNAs
• No need of interstage and IF filter
• Highly linear RF quadrature demodulator
• Programmable DC output level
• Very low power budget.
Transmitter
• Digital Sigma-Delta modulator for GMSK modulation, typical -163.5 dBc/Hz @ 20 MHz
• Single ended outputs to PA, Pout = +3.5 dBm
• Very low power budget.
RF-Synthesizer
•
ΣΔ
Synthesizer for multi-slot operation
• Fast lock-in times (< 150
μ
s)
• Integrated loop filter
• RF Oscillator
• Fully integrated RF VCO.
Crystal Oscillator
• Fully digital controlled crystal oscillator core with a highly linear tuning characteristic.
Mixed Signal and Power Management Unit
• DC/DC boost for voltages up to 15 V for driving White or Blue LEDs
• 8-Ohm loud speaker driver (250/350 mW)
• 16-Ohm earpiece driver
• 32-Ohm headset driver
Содержание GB108
Страница 1: ...1 GB108 Service Manual LG Electronics ...
Страница 11: ...11 3 TECHNICAL BRIEF Digital Main Processor Figure 3 1 PMB7880 FUNCTIONAL BLOCK DIAGRAM ...
Страница 12: ...12 ...
Страница 22: ...22 RTC 32 768KHz Crystal Figure 3 4 E GoldVoice RTC Interface ...
Страница 23: ...23 3 5 LCD Interface 3 wire SPI interface Figure 3 5 1 LCD Interface Figure 3 5 2 Charging PUMP Interface ...
Страница 24: ...24 ...
Страница 25: ...25 3 6 SIM Card Interface Figure 3 6 SIM CARD Interface ...
Страница 26: ...26 3 7 KEYPAD Interface Figure 3 7 KEY MAXTRIX Interface ...
Страница 27: ...27 3 8 Battery Charging Block Interface Figure 3 8 Charging IC Interface ...
Страница 28: ...28 3 9 RF Interface Figure 3 9 RF Module SAW Filter Interface ...
Страница 29: ...29 ...
Страница 30: ...30 3 10 Audio Interface Figure 3 10 1 Audio Interface ...
Страница 31: ...31 ...
Страница 32: ...32 Figure 3 10 2 Main Speaker Receiver Interface ...
Страница 33: ...33 Figure 3 10 3 Main Microphone Interface Figure 3 10 4 Headset Interface ...
Страница 36: ...36 3 13 Memory Interface Figure 3 13 Memory Interface ...
Страница 39: ...39 3 15 FM Radio Interface GB105a b GB106 GB107a b GB108 only Figure 3 15 FM Radio Interface ...
Страница 41: ...41 ...
Страница 42: ...42 PAM Matching component Mobile SW Antenna Matching component Antenna connect point ...
Страница 43: ...43 ...
Страница 44: ...44 ...
Страница 45: ...45 ...
Страница 46: ...46 ...
Страница 47: ...47 ...
Страница 48: ...48 TP2 TP1 TP3 ...
Страница 49: ...49 TP2 TP1 TP3 ...
Страница 50: ...50 ...
Страница 52: ...52 Circuit Diagram TP5 TP6 TP1 TP3 TP4 TP2 ...
Страница 54: ...54 4 4 SIM Card Trouble Test Point Circuit Diagram ...
Страница 56: ...56 4 5 Vibrator Trouble Test Point Circuit Diagram ...
Страница 58: ...58 4 6 Keypad Trouble Test Point Circuit Diagram ...
Страница 59: ...59 Checking Flow Change Metal Dome Check Metal Dome Start Change PCB NG OK ...
Страница 60: ...60 4 7 RTC Trouble Test Point Circuit Diagram ...
Страница 62: ...62 4 8 Key Backlight Trouble Test Point ...
Страница 63: ...63 Circuit Diagram ...
Страница 65: ...65 4 9 LCM Backlight Trouble Test Point Circuit Diagram ...
Страница 67: ...67 4 10 LCM Trouble Test Point Circuit Diagram ...
Страница 69: ...69 4 11 Microphone Trouble Test Point Circuit Diagram ...
Страница 71: ...71 4 12 Receiver Trouble Test Point Circuit Diagram ...
Страница 73: ...73 4 13 Speaker Trouble Test Point Circuit Diagram TP6 TP5 TP2 TP3 TP4 TP1 ...
Страница 75: ...75 4 14 Headphone Trouble Test Point ...
Страница 76: ...76 Circuit Diagram TP1 TP2 ...
Страница 79: ...79 4 15 Charging Trouble Test Point Circuit Diagram ...
Страница 81: ...81 4 16 FM Radio Trouble GB105a b GB106 GB107a b only Test Point ...
Страница 82: ...82 Circuit Diagram ...
Страница 86: ...86 5 DOWNLOAD 5 1 Download Setup ...
Страница 91: ...91 6 BLOCK DIAGRAM ...
Страница 92: ...92 ...
Страница 93: ...93 ...
Страница 94: ...94 ...
Страница 95: ...95 ...
Страница 96: ...96 ...
Страница 97: ...97 ...
Страница 98: ...98 8 BGA IC PIN Check BGA PIN Check of main chip Bottom view Use U101 Main chip PMB7880 Not Use EUSY0317401 ...
Страница 99: ...99 BGA PIN Check of Memory Top View Use U201 Memory S71GL032N40BFW0P Not Use EUSY0328002 ...
Страница 100: ...100 9 PCB LAYOUT ...
Страница 105: ...105 11 Calibration 11 1 Test equipment setup 11 2 Calibration Steps Execute HK_36 exe ...
Страница 107: ...107 Select MODEL Click START for RF calibration RF Calibration finish ...
Страница 109: ...109 12 1 4 Press power on key then click V24AT ON and then Update Info for communicating Phone and Test Program ...
Страница 113: ...113 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 Exploded View GB108 ...
Страница 114: ...114 ...