MMCSD

Table of Contents

• Features Supported
• SysConfig Features
• Features not Supported
• Example Usage
• API

Note

EMMC Flash card is not available in AM263x board.

Multi-Media Card Secure Digital (MMCSD) peripheral is a driver which provides an interface with storage devices which follows MMC/SD/SDIO protocol. The driver supports single bit, four bit data lines to communicate with the connected media. The MMCSD controller provides accessibility to external MMC/SD/SDIO devices using a programmed IO method. There is only one MMCSD module inside the SOC - MMCSD0.

Features Supported

• 64-bit data, address width System Bus Interface
• SD command/response sets as defined in the SD Physical Layer specification v2.00
• Operating voltage range VCC = 3.3 V
• High-speed MMCSD protocol, Clock frequency : 0-200MHz

SysConfig Features

Note

It is strongly recommend to use SysConfig where it is available instead of using direct SW API calls. This will help simplify the SW application and also catch common mistakes early in the development cycle.

Features not Supported

• No integrated DMA Controller support
• MMCSD instance does not support DDR mode

Example Usage

Include the below file to access the APIs

#include <stdio.h>
#include <drivers/mmcsd.h>

Instance Open Example

    MMCSD_Params mmcsdParams;
 
    MMCSD_Params_init(&mmcsdParams);
    gMmcsdHandle = MMCSD_open(0, &mmcsdParams);
    DebugP_assert(gMmcsdHandle != NULL);

Instance Close Example

    MMCSD_close(gMmcsdHandle);

API

APIs for MMCSD