MMC controller
SDRAM
controller
DDRAM
memory
Device
DMA
mmchs_050
MMC card
Public Version
MMC/SD/SDIO Use Cases and Tips
www.ti.com
24.6 MMC/SD/SDIO Use Cases and Tips
24.6.1 MMCHS Controller Usage
24.6.1.1 Overview
The MMCHS controller is in charge of managing raw data storage in a MMC memory card. The MMCHS
controller transfers data between DDRAM and MMC card.
gives an overview of MMCHS
controller position in the use case.
Figure 24-47. Overview
For the Camcorder use case, the MMCHS controller is configured to operate with the following features :
•
High speed mode with a card clock frequency of 48 MHz.
•
4 data lines.
•
1.8 V and 3.0 V voltage capabilities.
MMC card power supply is not provided by the MMCHS controller itself but rather by the companion
device. See
to learn how to set these voltage levels.
Only MMC1 controller is used in this configuration. Hence this document describes the output of the test
carried out with MMC1 controller.
3412
MMC/SD/SDIO Card Interface
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated
Содержание OMAP36 Series
Страница 174: ...174 List of Tables SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 692: ...692 MPU Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1084: ...1084 IVA2 2 Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1990: ...1990 2D 3D Graphics Accelerator SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2334: ...2334 Memory Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2700: ...2700 Memory Management Units SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2868: ...2868 HDQ 1 Wire SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2974: ...2974 UART IrDA CIR SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3054: ...3054 Multichannel SPI SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3462: ...3462 MMC SD SDIO Card Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3508: ...3508 General Purpose Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3584: ...3584 Initialization SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3648: ...3648 Debug and Emulation SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...