Kontron SMARC-sA3874i - Manual (Page 35)

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User’s Guide
3.2.17 SDMMC Interface for Carrier eMMC
The ULP-COM sA3874i module supports an 8bit SDMMC interface that may be used with a Carrier based eMMC
device. The ULP-COM specification provides for an SDMMC data path that may be up to 8 bits wide. The signaling
level is at the Module I/O voltage level of 1.8V.
SDMMC interface signals are exposed on the ULP-COM sA3874i edge connector as shown below:
ULP-COM sA3874i Edge finger TI Cortex A8 CPU Net Name Notes
Pin # Pin Name Pin # Pin Name
S26 SDMMC_D0 R7 SD0_DAT[0] SDMMC_D[0]
SDMMC Data
S27 SDMMC_D1 Y5 SD0_DAT[1] SDMMC_D[1]
S28 SDMMC_D2 Y3 SD0_DAT[2] SDMMC_D[2]
S29 SDMMC_D3 Y4 SD0_DAT[3] SDMMC_D[3]
S30 SDMMC_D4 V4 SD0_DAT[4] SDMMC_D[4]
S31 SDMMC_D5 T6 SD0_DAT[5] SDMMC_D[5]
S32 SDMMC_D6 N2 SD0_DAT[6] SDMMC_D[6]
S33 SDMMC_D7 V6 SD0_DAT[7] SDMMC_D[7]
S35 SDMMC_CK Y6 SD0_CLK/GP0[1] SDMMC_CK SDMMC Clock
S36 SDMMC_CMD N1
SD0_CMD/SD1_CMD/
GP0[2]
SDMMC_CMD SDMMC Command
S37 SDMMC_RST# SDMMC_RST
Reset signal to
Carrier eMMC flash