ALFAT-OM-337 GHI Electronics, ALFAT-OM-337 Datasheet - Page 4

• 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

Table of Contents
1.Introduction.......................................................................5
2.Architecture......................................................................7
3.Package and Pin-Out ....................................................10
4.ALFAT access interface..................................................13
5.ALFAT Command Set.....................................................19
GHI Electronics
Rev. 1.13
1.1.ALFAT SoC processor Concept...............................5
1.2.Example applications...............................................6
1.3.Key features.............................................................6
2.1.Commander.............................................................8
2.2.FAT File System Engine...........................................8
2.3.Memory Card Access (SDHC, SD or MMC)............8
2.4.USB Mass Storage Access......................................9
2.5.Boot Loader.............................................................9
4.1.Selecting the access interface...............................13
4.2.UART Interface......................................................13
4.3.SPI Interface Mode................................................14
4.4.I2C Interface Mode................................................17
UART configurations..............................................14
Write Transaction...................................................14
Read Transaction...................................................15
SPI DMA receive channel......................................16
SPI Bus Configurations..........................................16
I2C Bus Configuration............................................17
V - Get Version Number.........................................20
# - Enable Echo......................................................20
Z - Set Low Power Mode........................................20
T - Initialize Real Time Clock..................................21
S - Set Current Time and Date...............................22
G - Get Current Time and Date..............................22
B - Set UART Baud Rate.......................................22
I - Initialize and Mount MMC/SD or USB................22
J - Read Status Register........................................24
K- Get Free Size....................................................25
@ - Initialize Files and Folders List........................25
N - Get Next Directory Entry..................................26
O - Open File for Read, Write or Append...............27
R - Read from File..................................................28
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6.Boot Loader and firmware update..................................36
7.Hardware integration guide............................................41
8.ALFAT Off-the-shelf Circuit Boards................................45
9.Conditions of Use and Performance..............................48
10.Error Codes..................................................................50
DISCLAIMER....................................................................51
6.1.General Description...............................................36
6.2.Firmware Updater App...........................................36
6.3.Boot Loader Commands........................................38
6.4.Updating the firmware using a terminal console....38
7.1.Power Source........................................................41
7.2.Crystals..................................................................41
7.3.Card Detect and Write Protect signals...................42
7.4.Full Speed / High Speed with ULPI PHY...............42
7.5.Real Time Clock.....................................................43
7.6.Bootloader Access.................................................44
7.7.Electrical characteristics........................................44
8.1.ALFAT OEM Board................................................45
8.2.ALFAT SD Board....................................................46
9.1.Selecting the Right Storage Media........................48
9.2.File Access Speed.................................................48
9.3.Serial Interface Speed Overhead..........................49
W - Write to File.....................................................29
L- Fast Write to File (SPI mode only).....................29
F - Flush File Data..................................................31
C - Close File.........................................................31
P - File Seek...........................................................31
Y - File Tell.............................................................32
D - Delete File or Folder.........................................32
? - Find File or Folder.............................................33
M - Copy From File to Another ..............................33
A - Rename file ......................................................34
E - Test Media Speed.............................................34
Q – Format.............................................................35
ALFAT OEM Pinout................................................45
ALFAT SD Pin-out..................................................46
ALFAT SoC Processor
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Table of Contents