Specifications

Introduction
ARM DDI 0287B Copyright © 2004, 2006 ARM Limited. All rights reserved. 1-13
1.3.2 DMA support
The PrimeCell Dual-Master DMAC is provided to take full advantage of the multilayer
AHB architecture. This enables memory-to-memory data transfers to be performed
anywhere in the ARM926EJ-S Development Chip address space. Additionally, DMA
handshake signals are provided, enabling memory-to-peripheral and
peripheral-to-memory transfers to be supported.
Sixteen peripheral DMA request interfaces are provided by the PrimeCell DMAC. Ten
of these are used by the ARM926EJ-S Development Chip peripherals:
• three UARTs
•SCI
• SSP.
Six DMAC interfaces are available for off-chip peripherals. See Chapter 8 Direct
Memory Access Controller (DMAC) for more detail on the DMA controller.