Rev 2.0
Page 35 of 164
Generic Qseven Carrier Board Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.5.2
SDIO Ports
Qseven Generic Carrier Board supports SD/MMC connector and Wi-Fi Module connector through SDIO
interface of Qseven MXM connector. Since SDIO interface is multiplexed between SD/MMC and Wi-Fi
Module, either one only can be used at a time. This can be selected by controlling SDIO_PWR# signal
from 47
th
pin of Qseven MXM connector. If SDIO_PWR# is low, SD/MMC is selected and if SDIO_PWR# is
high, Wi-Fi module is selected.
2.5.2.1
SD/MMC Connector
Qseven Generic Carrier Board supports SD/MMC Connector (J6) to support SD cards/MMC cards/SDIO
cards. This connector supports up to 8-bit data transfer with card detect & write protect feature. The
main power to SD/MMC connector is 3.3V. SD/MMC connector is physically located on top of the board
as shown below.
Figure 6: SD/MMC Card Connector