Raster operations unit with interleaving of read and write requests using PCI express
    1.
    发明授权
    Raster operations unit with interleaving of read and write requests using PCI express 有权
    光栅操作单元使用PCI express对读和写请求进行交错

    公开(公告)号:US08035647B1

    公开(公告)日:2011-10-11

    申请号:US11467132

    申请日:2006-08-24

    IPC分类号: G09G5/39 G06F13/14 G06F13/00

    CPC分类号: G06T1/20

    摘要: A raster operations (ROP) unit interleaves read and write requests for efficiently communicating with a frame buffer via a PCI Express (PCI E) link or other system bus that provides separate upstream and downstream data transfer paths. One example of a ROP unit processes pixels in groups, performing read modify writeback sequences for each group. The read requests associated with pixels in a second group are advantageously interleaved with the writeback requests for pixels in the first group prior to sending the requests on the system bus.

    摘要翻译: 光栅操作(ROP)单元经由PCI Express(PCI E)链路或提供单独的上游和下游数据传输路径的其他系统总线交错读写请求以有效地与帧缓冲器通信。 ROP单元的一个示例处理组中的像素,对每个组执行读修改回写序列。 与第二组中的像素相关联的读取请求有利地与在系统总线上发送请求之前与第一组中的像素的写回请求交错。