A descriptor controlled transmit and receive scatter/gather Direct Memory Access Controller efficiently moves data frames comprised of scattered blocks of data from within memory to a destination interface via a multibyte-wide buffer. The transfer of frames into a transmit buffer and out of a receive...http://www.google.com.tw/patents/US6185633?utm_source=gb-gplus-share專利 US6185633 - DMA configurable receive channel with memory width N and with steering logic compressing N multiplexors
