驱动讲义nzy.ppt

RK27驱动软件 内容提要 内容提要 RK27XX 系列资源列表(1) RK27XX 系列资源列表(2) RK27XX 芯片架构 系统特性 System Operation ? Dual Core Architecture (ARM7EJC+DSP) ? Support system boot sequentially from ARM7EJC to DSP ? Selectable JTAG debug method ? ARM7EJC debug only ? DSP debug only ? ARM7EJC+DSP dual core debug ? Selectable booting method ? Boot from NOR Flash ? Boot from Embedded ROM ? Internal memory space ? DSP IMEM 32Kwords ? DSP DMEM 32Kwords ? ARM7EJC Embedded Sync SRAM 4Kbytes ? ARM7EJC Embedded Boot ROM 8Kbytes 内容提要 LCD Controller LCDC Unit is a controller interface to LCD panel, including a 2048X32bit SRAM. Key features Compatible MCU and RGB interface。 Compatible 8bits series and 24bits parallel RGB interface. Support delta RGB interface panel. Support YUV or RGB image source data input relatively in line. Support 8 grade alpha operations. Support even/odd field mode. Support 4:2:2 or 4:2:0 YUV source data input. Support 16bits or 24bits RGB source data input. Support scale base on YUV source. Support MCU buffer write and bypass mode. DMA 系统中有3个独立的DMA模块 ? A2A DMA --- 用于总线间数据传输 ? HDMA --- 用于音频数据传输 ? DW DMA --- 用于视频和LCD数据传输 A2A DMA ? Integrated between AHB BUS0 and AHB BUS1 ? Provide AHB-to-AHB bus protocol translation ? Support AHB-to-AHB DMA or Single AHB DMA ? Two DMA Channels support ? On-the-fly mode between two level bus support ? 4 hardware request handshaking support ? Support hardware and software trigger DMA transfer mode HDMA ? DW DMA ? Integrated in AHB BUS1 ? Four DMA Channels support ? 8 hardware request handshaking support ? Support hardware and software trigger DMA transfer mode ? Build-in 4 data FIFO : 64bytes/64bytes/64bytes/64bytes ? Scatter/Gather transfer support ? LLP transfer support ? Two master for on-the-fly support DW DMA ? Integrated in AHB BUS1 ? Four DMA Channels support ? 8 hardware request handshaking support ? Support hardware and software trigger DMA transfer mode ? Build-in 4 data FIFO : 64bytes/64bytes/64bytes/64bytes ? Scatter/Gat