Kontron COMe Eval Carrier T2 Manual de usuario Pagina 21

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COM Express® Eval Carrier Type 2
20
GPIO J48 PIN Description GPIO J48 Pin Description
1 VCC 3.3V 2 GPO0 / SD_CLK
3 GPI0 / SD_DATA0 4 GPO1 / SD_CMD
5 GPI1 / SD_DATA1 6 GPO2 / SD_WP
7 GPI2 / SD_DATA2 8 GPO3 / SD_CD#
9 GPI3 / SD_DATA3 10 GND
Note1: A SD-Card is detected if Card Detect is at low level. The write protection is active (read only) if SD_WP is
at high level.
Note2: The switching circuitry (J41: short jumper = SD card; open jumper = GPIO) which selects GPIO or SDIO
interface may influence the signal quality of SDIO which results in detection or boot issues with some
fast SD/SDHC cards. Therefore it's recommended to reduce SDIO interface speed to 24MHz in module's
BIOS if supported
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