Kontron COMe-mTT10 - Manual (Page 41)

COMe-mTT10 / Features and Interfaces
onboard microSD connector J3
Pin Pin name Signal
1 DAT2 SDIO1_DAT0
2 CD/DAT3 SDIO1_DAT3
3 CMD SDIO1_CMD
4 VDD 3.3V S0
5 CLK SDIO1_CLK
6 VSS2 GND
7 DAT0 SDIO1_DAT1
8 DAT1 SDIO1_DAT2
9 SWITCH1 SDIO1_CD#
10 SWITCH2 GND
11 SHIELD1 GND
12 SHIELD2 GND
13 SHIELD3 GND
14 SHIELD4 GND
15 SHIELD5 GND
- The SD_CMD line needs a pull-up resistor that can vary depending on the length of the
electrical paths (typical from 10kOhm to 100kOhm)
- The maximum length for SDIO signals on the baseboard should be 80mm.
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