EP550 Datasheet, PDF (1/3 Pages) Actel Corporation – EP550 SDIO/SD Memory/MMC Host Controller

Eureka Technology
Product Summary
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
Optional Interface
Standard CPU or
Generic user interface
Bus
Master
Bus
Slave
Data
Buffer
DMA Control
(Optional)
SD Host
Control
Control
Registers
SD card
Interface
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