3. TECHNICAL BRIEF
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• AD6537B is an ADI designed Analog Baseband processor. AD6537B covers the processing
GMSK modulation interface, Aux ADC, Voice signal processing and Power Management.
• AD6537B consists of
1. BB Transmit section
• GMSK Modulation
• I-channel & Q-channel Transmit DACs and Filters
• Power Ramping DAC
2. BB Receive section
• I-channel & Q-channel Receive ADCs and Filters
3. Auxiliary section
• Voltage Reference
• Automatic Frequency Control DAC
• Auxiliary ADC
• Light Controllers
4. Audio Section
• 8 kHz & 16 kHz Voiceband Codec
• 48 kHz Monophonic DAC
• Power Amplifiers
5. Power Management section
• Voltage Regulators
• Battery Charger
• Battery Protection
6. Digital Processor section
• Control, Baseband, and Audio Serial Ports
• Interrupt Logic
Summary of Contents for B2070
Page 68: ... 67 4 TROUBLE SHOOTING TEST POINT 4 6 LCD Trouble ...
Page 72: ... 71 4 TROUBLE SHOOTING TEST POINT 4 8 Speaker Trouble ...
Page 79: ... 78 4 TROUBLE SHOOTING 4 11 KEY backlight Trouble TEST POINT ...
Page 107: ... 106 8 PCB LAYOUT Figure 8 1 B2070 BOTTOM SIDE PCB LAYOUT ...
Page 108: ... 107 8 PCB LAYOUT Figure 8 1 B2070 TOP SIDE PCB LAYOUT ...
Page 109: ... 108 ...
Page 117: ...10 STAND ALONE TEST 116 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 121: ... 120 ...
Page 123: ... 122 ...