| 摘要 |
<p>PURPOSE:To enable to realize high-speed processing, by using a common programmable data transfer module DAM and taking the multichannel interface to the system interface. CONSTITUTION:The instruction from an upper-rank system 1 is caught at a system interface unit SIU11. A CPU22 recognizes it and performs a suitable processing according to the program stored in a local memory LMU21. In this case, the transmission parameter instructed in DMAs 25 and 12 is set up. When this set-up is finished, a DMA12 outputs the request to SIU11 at the transfer of output, and SIU11 starts the data transfer with the request of system bus. The data given to the upper-rank system bus 3 enters the system buffer SBUF14, the arrival of this data is reported to DMA12, DMA12 makes bus request to the system bus 4 and writes in it in the data buffer area of LMU21. The following data makes the same operation repetitively.</p> |
