The C8237 Programmable DMA Controller core（C8237 core）is a peripheral interface circuit for microprocessor systems. The core is designed for use with an external, 8-bit address latch. It contains four independent channels and may be expanded to any number or channels by cascading additional controller chips. Each channel has a full 64K address and word count capability.

Features

      •  Four, independent DMA channels
      •  Independent auto-initialization of all channels
      •  Memory-to-Memory transfers
      •  Memory block initialization
      •  Address increment or decrement
      •  Directly expandable to any number of channels
      •  End of process input for terminating transfers
      •  Software DMA requests
      •  Independent polarity control for DREQ and DACK signals
      •  The C8237 was developed in HDL and synthesizes to approximately 5,500 gates depending on the 
         technology used
      •  Functionality based on the Intel 8237


Applications

The C8237 core is designed to improve system performance by allowing external devices to directly transfer information from the system memory.