资料介绍
BB Circuit Introduction 12202004GSM Solution Block Diagram
MT6205 GSM Baseband
T/R Switch
MT6119 RF Transceiver
PLL VCO
ADC I/Q DAC Control
DSP 52MHz MCU/DSP Interface
DSP Coprocessors RAM ROM
ADC DAC
PA
TXVCO
26MHz VCTCXO
GPIO JTAG Debug ARM7TDMI 26MHz 256Kb RAM WDT GPT PWM EMI LCD ROM KP UART
1 4 7
2 5 8 0
3 6 9 #
TDMA Timer
Interrupts DMAs System Bus RTC SIM
PLL
DC In
FET + 0.2
MT6305 PMIC
Battery Buzzer M
Power Supplies
Flash
Sub LCD
SIM Card
SRAM
Main LCD
External Memory Interface
4 Chip select Pins: (CS0~3) /CS0-1. Flash and SRAM (PSRAM) AMD combo memory -AM41DL6408G (Compatible with 32+8 MCP) NVRAM: 1Mb /CS2. Sub LCM or YAMAHA MA3 Melody IC (NC) /CS3. Main LCM
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