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GTM general Architecture GTM 由很多子模块组成，形成了一个通用定时器平台，服务不同的应用程序领域，其中的子模块可以根据外部需求进行灵活配置，其架构如下图所示： 各个子模块总结如下： Advanced Routing Unit (ARU) Broadcast Module (BRC) 广播单元 First In First Out Module (FIFO) AEI to FIFO Data Interface (AFD) FIFO to ARU Unit (F2A) Cloc

Interrupt Router (IR) Feature List 支持多达1024个服务请求 每个中断控制单元ICU支持多达255个中断优先级 支持多达8个中断控制单元 每个CPU或者DMA(Direct Memory Access)都有专用的中断控制单元ICU 仲裁时间短，3-4个时钟周期就会将中断结果发送给中断服务者 每个外围中断请求源都有一个特定的中断节点Service Request Node (SRN) 每个SRN在寄存器中都有8bit的优先级field 每个中

System Timer (STM) The STM is designed for global system timing applications requiring both high precision and long period. Feature List The STM has the following features: • Free-running 64-bit counter • All 64 bits can be read synchronously • Differen

SCU(System Control Units) SCU模块组成 The System Control Unit (SCU) is a cluster of sub-modules which control various system functions, including: • Reset Control (RCU) • Trap generation (TR) • System Registers for miscellaneous functions (SRU) • Watchdog Time