SD/MMC SPI Core

from El Camino GmbH

Features

• Supports MultiMedia Card (MMC) and Secure Digital (SD) card in serial peripheral interface (SPI) mode
• Variable data rate up to 20 Mbps
• Hardware assisted cyclic redundancy check (CRC) calculation
• Low-level hardware abstraction layer (HAL) drivers included
• Windows utility for raw data read/write access on PC platform
• Includes prototyping adapter for Altera^® and El Camino Nios^® II development boards
• Optional file allocation tables FAT12/FAT16 stand-alone Nios II file system

Block Diagram

Figure 1. Block Diagram of the Function

Description

The SD/MMC SPI core with Altera Avalon^® bus interface allows the designer to easily connect SOPC Builder systems to standard MMC and SD card flash-based memory devices. The MMC and SD cards are universal, low-cost data storage and communication media widely used in consumer products such as digital cameras and cellular phones. The SD/MMC SPI core is fully compliant with SOPC Builder and integrates easily into any SOPC Builder-generated system.

For the Nios II processor, El Camino provides low-level driver routines for the SD/MMC SPI core. The drivers provide universal access routines for MMC and SD memory devices, eliminating the need for additional low-level code to read or write raw data from or to the SD/MMC cards.

Device Utilization and Performance

Table 1 lists the typical device utilization results for the megafunction.

Deliverables

• SOPC Builder-ready IP core in VHDL (source code or encrypted netlist)
• Low-level software drivers for initialization, read and write access (C source code or pre-compiled library)
• Prototyping adapter for Altera and El Camino Nios II prototyping boards
• Optional FAT12/FAT16 file system (C source code or pre-compiled library)

Contact Information

For additional information, contact El Camino GmbH at:

El Camino GmbH
Landshuter Str. 1
D-84048 Mainburg
Germany
Tel: +49 (0) 8751-8787-0
Fax: +49 (0) 8751-842876
Email: info@elca.de
URL: www.elcamino.de