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MD82C237-12B

Intersil
Part Number MD82C237-12B
Manufacturer Intersil
Description CMOS High Performance Programmable DMA Controller
Published Apr 29, 2005
Detailed Description 82C237 March 1997 CMOS High Performance Programmable DMA Controller Description The 82C237 is a modified version of the ...
Datasheet PDF File MD82C237-12B PDF File

MD82C237-12B
MD82C237-12B

Overview
82C237 March 1997 CMOS High Performance Programmable DMA Controller Description The 82C237 is a modified version of the 82C37A.
The 82C237 is fully software and pin for pin compatible with the 82C37A but provides an additional mode for 16-bit DMA transfers, as well as enhanced speed.
Each channel may be individually programmed for 8-bit or 16-bit data transfers.
The 82C237 controller can improve system performance by allowing external devices to transfer data directly to or from system memory.
Memory-to-memory transfer capability is also provided, along with a memory block initialization feature.
DMA requests may be generated by either hardware or software, and each channel is independently programmable with a variety of features for flexible operation.
The 82C237 is designed to be used with an external address latch, such as the 82C82, to demultiplex the most significant 8 bits of address.
An additional latch is required to temporarily store the most significant 8 bits of data if 16-bit ...


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