Slajd19 (162)

MCF5407- WŁASNOŚCI

♦ DMA contro 11 er

— Four fully progranimable cliaiinels: two support external reąuests ancl external a ckn owi e d ge s

— Dual-address and single-addresstransfer supportwitli 8-_? 16-, and 32-bitdata capability

— Source/destination address pointers tliat ean increment or reniain constant

— 24-bit transfer counter per cliannel

— Operand packing and unpaeking supported

—Auto-a li gnme nt transfer s suppoi*tedfor efficient błock movement

— Bursting and cycle steal support

— Two-bus-clock internal a ccess

—Automatic DMA transfers from 011-cliip UARTs using internal interrupts ♦ DRAM controller

— Synchronous DRAM (SDRAM), extended-data-out (EDO) DRAM, and fast page modę suppoii:

— Up to 512: Mbytes of DRAM

— Progranimable timer provides CAS-before-RAS refreslifor asynclironous DRAMs

— Suppoii: for two separate memoryblocks