SD / SDIO / MMC Host Controller

Overview

Key Features

• Compliant with SD Host Controller Standard Specification Version 2.0
• Compliant with SD Physical Layer Specification Version 2.0
• Compliant with SDIO Specification 2.0
• Compliant with eMMC Specification Version 4.41
• Supports 1-bit,4-bit SD/eMMC modes and 8-bit eMMC modes
• Supports SD Card Detection input pin
• Supports SD Card Write Protection input pin
• Supports programmable clock frequency generation to the SD/eMMC card
• Supports Interrupt and ADMA2 transfer mode of operation
• Individual 2Kbyte data buffer for read and write
• Cyclic Redundancy Check (CRC) for command and data
• Supports timeout monitoring for response, data, CRC token & busy
• Supports a maximum block length of 2K-byte
• Supports both single block and multi block data transfer.
• Supports power ON/OFF control to SD/eMMC card

Benefits

• To enable memory storage (SD/MMC memory card) and Input/output (SDIO card) features in the product
• Host controller for SD/SDIO cards where the processor in the platform doesn’t support SD/SDIO interface
• To increase the number of SD/SDIO interface support in the platform

Block Diagram

Applications

• Handheld devices and consumer electronics
• SOC Integration with processor, where the processor in the platform doesn’t support SD/ SDIO/ MMC interface

Technical Specifications