![]() ![]() ![]() Here we can see that AHB is mainly linked to the system kernel and storage management, and APB is mainly distributed to my peripheral devices. Vc3ryb25npsnpoamkpgjypgokpgjyp goKPGJyPgoKPGJyPgoKPGJyPgoKPGJyPgoKPGJyPgoKPGgyPkNvcnRleC1NM7XEz7XNs8Sjv k8L2gyPgo8aW1nIHNyYz0="" alt="\"> ![]() The figure below illustrates the role of bus bridge between AHB and APB. At this time, we need a "translation" to convert the data and address on the bus on device a into a format that can be parsed by device B, and then put it on the bus of device B. However, if device a and device B do not have consistency, then device a and device B must be hung on two different buses. If device a and device B have consistency (the original is under discussion, I don't know how to translate it better here, let's just translate it into consistency for now), then device a and device B can directly hang on the same bus, and directly interpret the data on the bus. The function of the bus is to transfer data and address from device a to device B, APB (advanced peripheral bus)ĪHB and ASB are actually one thing, high-speed bus, mainly responsible for the interface of embedded processor, DMA controller, memory, etc.ĪPB is a low-speed bus, mainly responsible for peripheral interfaceĪs we all know, each module in a system communicates with each other through the bus. It defines two kinds of buses: AHB (advanced high performance bus) advanced high performance bus, also called ASB (advanced system bus). Here, I check some information and record itĪMBA (advanced microprocessorbus Architecture) is an open SoC Bus standard proposed by arm company, which has been widely used in RISC kernel.ĪMBA defines a multi level bus system, including system bus and peripheral bus with lower level.ĪMBA supports 32-bit, 64 bit, 128 bit data bus and 32-bit address bus, and supports byte and half word design. The first problem encountered is the internal bus AHB and APB of STM32. Today I started to see the program design of STM32. I saw the main peripherals and circuit design of STM32 a few days ago. ![]()
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