ALFAT-OM-337 GHI Electronics, ALFAT-OM-337 Datasheet - Page 9

• Manufacturer Part Number: ALFAT-OM-337
• Description: Memory IC Development Tools ALFAT USB / SD to UART / SPI OEM BOARD
• Manufacturer: GHI Electronics

Specifications of ALFAT-OM-337

• Rohs: yes
• Product: SD OEM Board
• Tool Is For Evaluation Of: SD, SDHC, MMC Cards, USB drives
• Memory Type: Flash
• Operating Supply Voltage: 3.3 V
• Description/function: OEM board offers a seamless way to access files on SD & MMC cards and on USB memory drives
• Interface Type: I2C, SPI, UART, USB
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Part # Aliases: GHI-ALFAT-OM-337

ALFAT SoC processor is capable of accessing FAT file system files on
USB mass storage devices. The hardware provides two standard Full
Speed* USB 2.0 compatible host interfaces (USB0 and USB1) that
use the internal USB PHY. Only 22ohm resistors and USB host
connector is needed.
*Full-Speed USB 2.0 is 12mbps.
+
The boot loader is a piece of software that boots the system up. It verifies and runs ALFAT
firmware. Also It gives the hosting system an interface for firmware maintenance.
GHI Electronics regularly maintains ALFAT firmware with improvements and bug fixes.
ALFAT boot loader allows the hosting system to update the firmware.
The boot loader can only be accessed through the UART port and it uses XMODEM 1K to
transfer the firmware file to ALFAT. Boot Loader and firmware update section explain this in
more details.
2.4. USB Mass Storage Access
2.5. Boot Loader
GHI Electronics
Rev. 1.13
High-Speed USB 2.0 is 480mbps.
USB1 interface is also capable of running in USB 2.0 High Speed mode by
adding ULPI High Speed
the file system access speed.
+
PHY chips like FUSB2805. This options quadruples
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ALFAT SoC Processor
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Architecture