The AD6522 is an digital processor made by ADI.
Figure 3-22. Top level block diagram of the AD6522 internal architecture.
3.6 Digital Main Processor
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3. TECHNICAL BRIEF
BUS Arbitration Subsystem
• It is to work as a cross point for data accesses between the three main buses.
• EBUS is for external accesses, primarily from Flash memory for code and data.
• RBUS is for internal RAM access.
• PBUS is for access to internal peripheral modules such as UART, RTC or SIM.
• In addition to the three main system buses, it has SBUS, IOBUS and DMABUS.
DSP subsystem
• It consists of ADI DSP, Viterbi coprocessor, ciphering unit and a cache memory/controller system.
• The DSP can run at a maximum clock frequency of 78MHz at 2.45V.
• The Viterbi and ciphering accelerators enable a very efficient implementation of the channel
equalization, encryption and decryption tasks.
AD6522
DSP
Subsystem
DMA and BUS
ARBITRATION
MCU
Subsystem
(ARM7TDMI)
Peripheral
Subsystem
PBUS
SBUS
DSP BUS
AD6521
(VBC)
EBUS
SRAM
FLASH
RF-Control
MMI
USC
Содержание G3100
Страница 32: ... 34 3 TECHNICAL BRIEF Figure 3 20 TX IQ Signal Figure 3 21 RX IQ Signal ...
Страница 40: ... 42 Figure 3 26 1 Voice band circuit diagram Headset Hands free kit part 1 3 TECHNICAL BRIEF ...
Страница 42: ... 44 Figure 3 27 AD6521 circuit diagram 3 TECHNICAL BRIEF ...
Страница 73: ... 75 4 3 8 Receiver RF Level Figure 4 1 Test Points of Rx Level 4 TROUBLE SHOOTING ...
Страница 74: ... 76 4 3 9 Transmitter RF Level Figure 4 2 Test Points of Tx Level 4 TROUBLE SHOOTING ...
Страница 81: ... 83 The Receiver part Circuit Diagram C203 C207 C206 4 TROUBLE SHOOTING ...
Страница 87: ... 89 R202 MIC201 R204 C204 C201 R208 R206 C208 Q203 4 TROUBLE SHOOTING ...
Страница 93: ... 95 Test SIM Connector Check J301 4 TROUBLE SHOOTING ...
Страница 97: ... 99 J201 R240 C234 L201 R241 4 TROUBLE SHOOTING U205 U203 U204 ...
Страница 101: ... 103 CN302 U203 U204 4 TROUBLE SHOOTING ...
Страница 102: ... 104 U205 4 TROUBLE SHOOTING ...
Страница 104: ...5 DISASSEMBLY INSTRUCTION 106 3 Detach the rest components as shown below Figure 5 3 Detaching the rest components ...
Страница 108: ...3 Press Start and Wait until Erase is completed 110 1 Press Start 2 Confirm completion 6 SOFTWARE DOWNLOAD ...
Страница 117: ... 119 9 PCB LAYOUT 9 1 Rear Part ...
Страница 118: ...9 2 Front Part 120 ...
Страница 124: ... 126 11 2 Standalone Test Equipment Setup GSM Test Equipment Power Supply PC JIG RS 232 Cable Phone 11 STAN ALONE TEST ...
Страница 134: ... 137 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 Exploded View ...