资料介绍
MTK系统与驱动
MTK平台：
[pic]
基于32bit ARM7EJ-S Risc处理器，GPRS Class12 Modem.
功能扩展接口：３个port外部内存接口，３个 ８/16bit并行接口，Nand
Flash,IrDA,USB和MMC/SD/MS/MS Pro. 时钟频率：104MHz；
48K Bytes on-chip SRAM；72K Bytes MCU dedicated Tightly Coupled Memory
[pic] MCU_CLOCK = MCU_104M # MCU clock setting, MCU_13M, MCU_26M,
MCU_39M, MCU_52M, MCU_104M
EXT_CLOCK = EXT_26M # External clock source setting, EXT_13M,
EXT_26M
RF_MODULE = LENOVOSH25_06B_PMJ_MT6139E；
PMIC = MT6318 # Charge Function, NONE, MT6305 or MT6318
PLATFORM = MT6225 # Hardware Platform, MT6208, FPGA, MT6218,
MT6218B, MT6219, MT6226, MT6227, MT6228, MT6229 ...etc.
MCU启动流程：
[pic]
UART口在26Mhz环境下150ms内，若没收到start命令，它会自动从flash的0x0地址去执行
。
否则：Meta模式的触发(trigger)命令,是一个目标寄存器的写命令。
寄存器：0x80120000=0x01（MT62
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