M82380 - HIGH PERFORMANCE 32-BIT DMA CONTROLLER WITH INTEGRATED SYSTEM SUPPORT PERIPHERALS

3 2 Interface Signals 3 2 1 DREQn and EDACK (0 2) 3 2 2 HOLD and HLDA 3 2 3 EOP 3 3 Modes of Operation 3 3 1 Target Requester Definition 3 3 2 Buffer Transfer Processes 3 3 3 Data Transfer Modes 3 3 4 Channel Priority Arbitration 3 3 5 Combining Priority Modes 3 3 6 Bus Operation 3 4 Bus A

• of the M82380 Each module has a corresponding detailed section later in this data sheet Those sections should be referred to for design and programming information 1 1 M82380 Architecture The M82380 is comprised of several computer system functions that are normally found in separate LSI and VLSI components These include a highperformance eight-channel 32-bit Direct Memory Access Controller a 20-level Programmable Interrupt Controller which is a superset of the M8259A four 16-bit Programmable I.