Copyright © by Eureka Technology Inc.

4962 El Camino Real,

Los Altos, CA 94022, USA

Tel: 1 650 960 3800

Fax: 1 650 960 3805

http://www.eurekatech.com

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Eureka Technology

EP550 SDIO/SD Memory/MMC Host Controller

FEATURES

• Host controller for Secure Digital (SD), SDIO, SD combo, and MultiMedia Card

(MMC) bus.

• Allows host CPU to access SD and MMC devices.

• Compatible with SD 2.0, including high capacity (SDHC) and 8-bit MMC 4.2

specifications.

• Many choices of CPU interfaces, including AHB, APB, SH4, Wishbone, PCI

and generic user interface.

• Supports SDMA operation with option to remove SDMA for very small gate

count implementation.

• Selectable data buffer size from 512 to 16Kbytes.

• Hardware support of CRC error detection and interrupt generation.

• Supports multi-function SD cards including command suspend, resume, and

read wait.

• Option to operate user interface and card control at different clock domains.

• Supports all SD-enabled operating systems including Windows.

• Free source code included for bus driver development.

• Fully sythesizable code ideal for ASIC and FPGA implementations.

• Fully static design with edge triggered flip-flops.

BLOCK DIAGRAM

Bus

Bus

Slave

Master

SD Host

Control

Control

Registers

DMA Control

(Optional)

Data

Buffer

Optional Interface

Standard CPU or

Generic user interface

SD card

Interface

Product Summary