ALFAT-OM-337 GHI Electronics, ALFAT-OM-337 Datasheet - Page 26

• 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

GHI Electronics
Rev. 1.13
N - Get Next Directory Entry
Calling N command retrieves a directory entry from the directory list initialized using @
command. Every time N command is called, ALFAT retrieves an entry of the list and
increment the list pointer.
When list pointer reaches the end of the list and N is called again, ALFAT returns error
code 0x04 indicating the end of the list has been reached.
* File Attributes are one byte Standard Attribute Structure in FAT system.
Format
Example N
7
Reserved
N
!00
NNNNN.EEE
$AA
$ssssssss
!00
!00
TEST0001.TXT
$00
$0000FE23
!00
N
!00
TEST0002.TXT
$20
$00001234
!00
<LF>
<LF>
<LF>
6
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
5
Archive Folder
<LF>
<LF>
4
Page 26 of 51
3
Volume
ID
2
System Hidden Read
NNNNN File Name
EEE File Extension (if any)
AA 1 byte, in HEX, File
Attributes*
ssssssss 4 bytes in HEX file
size
Passing N command two
times and getting the results.
1
ALFAT SoC Processor
ALFAT Command Set
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