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| NXP ISP1181x USB固件解决方案 | |||||
作者：NXP 文章来源：NXP 点击数： 更新时间：2007-10-12  |
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The ISP1181x is a full-speed cost-optimized and feature-optimized Universal Serial Bus (USB) Peripheral Controller with up to 14 configurable endpoints. It has a high-speed general-purpose parallel interface to communicate with many types of microcontrollers or microprocessors. It supports bus configurations and local Direct Memory Access (DMA) transfers of up to 16 bytes per cycle. To a microcontroller, the ISP1181x appears as a memory device with an 8-bit or 16-bit data bus and a 1-bit address bus. The ISP1181x supports both multiplexed and nonmultiplexed address and data bus. The ISP1181x can also be configured as a DMA slave device to allow more efficient data transfer. One of the 14 endpoint FIFOs may directly transfer data to or from the local shared memory. Feature evaluation of the ISP1181x, firmware and product prototype development can easily be done with this set up. The ISP1181x microcontroller evaluation (eval) kit comes with the ISP1181x, microcontroller boards, test application program, USB driver, and sample firmware source codes. The firmware provided with the kit is written in the C language, allowing you to port it to other platforms for compilation. With this kit, you can develop your USB peripherals through firmware and hardware schematics.  图1. ISP1181x USB固件电路图(1)  图2. ISP1181x USB固件电路图(2)  图3. ISP1181x USB固件电路图(3)  图4. ISP1181x USB固件电路图(4)  图5. ISP1181x USB固件电路图(5) 详情请见: >http://www.nxp.com/acrobat_download/usermanuals/UM10064_1.pdf |
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