ALFAT-SD-338 GHI Electronics, ALFAT-SD-338 Datasheet - Page 24

• 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
J - Read Status Register
cards.
Important note 2: If the SD card is with a high class number, this does not mean that it
will work with higher clock frequency.
Returns system status register.
This table shows the bit mapping.
Format
Example J
Bit Number
0
1
2
3
4
5
6
7
J
!
$ss
!00
!00
$11
!00
00
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
<LF>
Status
Reads Card Detect pin status (CD)
0: Memory card not detected
1: Memory card detected
Reads SD Write Protection pin status (WP)
0: SD Card not protect
1: SD Card protect
0: USB0 is not mounted (or it was
disconnected after it's being mounted)
1: USB0 is mounted
0: USB1 is not mounted (or it was
disconnected after it's being mounted)
1: USB1 is mounted
0: USB1 is in Full Speed mode.
1: USB1 is in High Speed mode.
0: USB0 is not attached.
1: USB0 is attached.
0: USB1 is not attached.
1: USB1 is attached.
Reserved
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Read status register.
$ss
status of media drive.
First !00 is sent before starting
calculations
Indicating card detect pin is high and
USB 1 is in high speed mode.
is 1 byte in HEX that shows the
ALFAT SoC Processor
ALFAT Command Set
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