# IDMA

## Modules

| IDMA Symbols Defined
| IDMA Data Structures
| IDMA Functions
| IDMA Enumerated Data Types

## Detailed Description

## Introduction

### Overview

The iDMA is a simple DMA engine that can be used to perform block transfers between any two memory locations local to the GEM. A "local" memory is simply one whose controller is inside the GEM, which can be L1P, L1D, L2 (port A and port B), or peripheral configuration port (CFG). The iDMA controller allows rapid data paging between all local memories. To fully support this, the iDMA consists of two orthogonal channels caoable of working concurrently. The two channels are: a) IDMA Channel 0:- Intended for quick programming of configuration registers through external CFG port of GEM. b) IDMA Channel 1:- Intended for data paging between local memories.

### References

1. GEM Internal DMA (IDMA) Specification.

### Assumptions

The abbreviations IDMA, idma and Idma have been used throughout this document to refer to iDMA Controller.

Copyright 2012, Texas Instruments Incorporated