ALFAT-SD-338 GHI Electronics, ALFAT-SD-338 Datasheet - Page 22

• Manufacturer Part Number: ALFAT-SD-338
• Description: Memory IC Development Tools ALFAT SD / MMC OEM BOARD
• Manufacturer: GHI Electronics

Specifications of ALFAT-SD-338

• Rohs: yes
• Product: SD Board
• Tool Is For Evaluation Of: SD, SDHC, MMC Cards
• Memory Type: Flash
• Operating Supply Voltage: 3.3 V
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Part # Aliases: GHI-ALFAT-SD-338

GHI Electronics
Rev. 1.13
S - Set Current Time and Date
G - Get Current Time and Date
B - Set UART Baud Rate
I - Initialize and Mount MMC/SD or USB
This command should be called to initialize and mount the file system. Any other file-
related commands will fail if this was not called first.
Format
Example S
Format
Example B
Format
Bits(s)
31..25
24..21
20..16
15..11
10..5
4..0
*Time and Date structure is a 32-bits standard structure used in FAT system. For
example, 0x34212002 is 01/01/2006 – 04:00:04
Field
Year1980 Years since 1980
Month
Day
Hour
Minute
Second2
G
MM-DD-YYYY
!00
G
HH:MM:SS
!00
S
!00
!00
B
!00
!00
!00
!00
<SP>
<SP>
<SP>
<SP>
<SP>
<SP>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
ddddtttt
34210000
ssssssss
1C200
D
T
<LF>
<LF>
<LF>
Description
1..12
1..31
0..23
0..59
Seconds divided by 2 (0..30)
<LF>
<LF>
<LF>
<LF>
<LF>
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Get current date.
Get current time.
ddddtttt time and date 32bit structure*
Set 1/1/2006 00:00:00
ssssssss: The standard baud rate value in
HEX.
The first !00 will be sent when the baud
rate value is correct.
Set the baud rate at 115200.
0x34212000 Bits in Binary
ALFAT SoC Processor
ALFAT Command Set
www.ghielectronics.com
001 1010
00 0000
0 0001
0 0100
0 0010
0001