DMA

Introduction

The MMSP2 has 16 DMA channels, which can be used for both copying between regions of memory, and to/from IO devices.

A proportion of the memory bandwidth is allocated to groups of channels, and thence to individual channels within those groups:

Channels	Proportion of bandwidth
0, 1, 2, 3	50%
4, 5, 6, 7	25%
8, 9, 10, 11	12.5%
12, 13, 14, 15	12.5%