Service Manual
Page 27
... 3.0 volt interface SIM card. F. SIM interface The AD6527 provides SIM Interface Module. The descriptions about the signals are generated by the Auxiliary ADC, audio, and charger modules. - 26 - Clock 3.25MHz frequency. The AD6527 detects whether key is inserted or not, but it doesn't check during established call mode whether SIM card...
... 3.0 volt interface SIM card. F. SIM interface The AD6527 provides SIM Interface Module. The descriptions about the signals are generated by the Auxiliary ADC, audio, and charger modules. - 26 - Clock 3.25MHz frequency. The AD6527 detects whether key is inserted or not, but it doesn't check during established call mode whether SIM card...
Service Manual
Page 29
TECHNICAL BRIEF 3.6 Analog Main & Power Management Processor (AD6537B, U101) AD6525 or AD6526 BSPORT CSPORT AD6537B Light Controllers Ram GMSK Filter Filter ADC DAC DAC DAC DAC ADC ADC LEDs Othello Crystal & Varactor Tone Filter DAC ASPORT Filter ADC Mic Battery Charger 8 Voltage Regulators Switch Headphones or Headset VCORE: 1.8 V, 80mA VMEM: 1.8 or 2.8V, 150mA VEXT: 2.8V, 170mA VSIM: 1.8 or 2.85V, 20mA VRTC: 1.8V, 200 µA VABB VMIC: 2.5V, 1mA VVCXO: 2.75V, 10mA Figure 3-11 AD6537B FUNCTION BLOCK DIAGRAM - 28 - 3.
TECHNICAL BRIEF 3.6 Analog Main & Power Management Processor (AD6537B, U101) AD6525 or AD6526 BSPORT CSPORT AD6537B Light Controllers Ram GMSK Filter Filter ADC DAC DAC DAC DAC ADC ADC LEDs Othello Crystal & Varactor Tone Filter DAC ASPORT Filter ADC Mic Battery Charger 8 Voltage Regulators Switch Headphones or Headset VCORE: 1.8 V, 80mA VMEM: 1.8 or 2.8V, 150mA VEXT: 2.8V, 170mA VSIM: 1.8 or 2.85V, 20mA VRTC: 1.8V, 200 µA VABB VMIC: 2.5V, 1mA VVCXO: 2.75V, 10mA Figure 3-11 AD6537B FUNCTION BLOCK DIAGRAM - 28 - 3.
Service Manual
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...; AD6537B consists of 1. BB Receive section • I -channel & Q-channel Transmit DACs and Filters • Power Ramping DAC 2. Power Management section • Voltage Regulators • Battery Charger • Battery Protection6. 3. Audio Section • 8 kHz & 16 kHz Voiceband Codec • 48 kHz Monophonic DAC • Power Amplifiers 5. Digital Processor section • Control, Baseband...
...; AD6537B consists of 1. BB Receive section • I -channel & Q-channel Transmit DACs and Filters • Power Ramping DAC 2. Power Management section • Voltage Regulators • Battery Charger • Battery Protection6. 3. Audio Section • 8 kHz & 16 kHz Voiceband Codec • 48 kHz Monophonic DAC • Power Amplifiers 5. Digital Processor section • Control, Baseband...
Service Manual
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... AUX ADC and Voltage Reference • IDAC: 10 bits • The Auxiliary ADC provides : -Two differential inputs for temperature sensing. -A differential input for the battery charger current sensor CSFS CSDI CSDO AD6537B Control Serial Port AFC DAC Voltage Reference Aux ADC REFTXCM Light Controllers AFCDAC REFBB REFOUT REFCHG REF TEMP1 TEMP2...
... AUX ADC and Voltage Reference • IDAC: 10 bits • The Auxiliary ADC provides : -Two differential inputs for temperature sensing. -A differential input for the battery charger current sensor CSFS CSDI CSDO AD6537B Control Serial Port AFC DAC Voltage Reference Aux ADC REFTXCM Light Controllers AFCDAC REFBB REFOUT REFCHG REF TEMP1 TEMP2...
Service Manual
Page 36
... battery voltage sense input. -BATTYPE : battery type identification input -REFCHG : voltage reference output 4. Charging Process -Check charger is inserted or not -If AD6537B detects that Charger is inserted, the CC-CV charging starts. -Exception : When battery voltage is lower than 3.2V, the precharge (... battery voltage reach to charge Lithium Ion and/or Nickel Metal Hydride batteries. Pins used to 3.2V the CC-CV charging starts. 3. Charger initialization, trickle charging, and Li-Ion charging control are implemented in hardware. 2. TA (Travel Adaptor) -Input voltage: AC 85V ~ ...
... battery voltage sense input. -BATTYPE : battery type identification input -REFCHG : voltage reference output 4. Charging Process -Check charger is inserted or not -If AD6537B detects that Charger is inserted, the CC-CV charging starts. -Exception : When battery voltage is lower than 3.2V, the precharge (... battery voltage reach to charge Lithium Ion and/or Nickel Metal Hydride batteries. Pins used to 3.2V the CC-CV charging starts. 3. Charger initialization, trickle charging, and Li-Ion charging control are implemented in hardware. 2. TA (Travel Adaptor) -Input voltage: AC 85V ~ ...