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Sdio configuration, Come-mtt10 / bios operation – Kontron COMe-mTT10 User Manual

Page 75

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COMe-mTT10 / BIOS Operation

SDIO Configuration

Feature

Options

Description

SDIO Access Mode

Auto

DMA

PIO

Auto Option: Access SD device in DMA mode if controller
supports it, otherwise in PIO mode. DMA Option: Access

SD device in DMA mode, PIO Option: Access SD device in
PIO mode

External SDIO

Disabled

Enabled

Enable/Disable external SDIO slot on Acrrier board. If

disabled, the SDIO pins for this Slot will be used as
GPIOs

Ext. SDIO Clock

25MHz

12.5MHz
6.25MHz

Select the maximum allowable speed for the slot. Actual

speed may be lower depending on controller
capabilities

Onboard SDIO Clock

25MHz

12.5MHz
6.25MHz

Select the maximum allowable speed for the slot. Actual

speed may be lower depending on controller
capabilities

PowerOn Delay

10
50ms

200ms

500ms
1s

Select SDIO PowerOn Delay

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