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SDIO Configuration
Feature
Select SDIO or GPIO
Data Access Mode
SDIO Clock
The SDIO/GPIO switch is only supported on hardware revisions CE 4.x.x or newer. Modules
with revision CE 1.x.x must be reworked to enable GPIO functionality.
71
Option
SD Card
GPIO
Auto
DMA
PIO
Auto
24 MHz
COMe-mSP1 / BIOS Operation
Description
The SD card interface is shared with module GPIO
signals. To use GPIO with this module it is necessary to
set this switch to GPIO.
Auto: Access SD device in DMA mode if controller
supports it, otherwise in PIO mode.
DMA: Access SD device in DMA mode.
PIO: Access SD device in PIO mode.
Limit SDIO Clock to 24MHz. Auto setting enables 48MHz
clock if supported by the SDIO device.
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