Kontron SMARC Evaluation Carrier User Manual
Page 50
User’s Guide
50
The pin-out used for the eMMC Mezzanine interface is shown in the following table. Per the SMARC specification, the IO
interface may run at either 1.8V or 3.3V. Usually 1.8V is used.
Per the eMMC specification, the data interface may be used in 8 bit, 4 bit or 1 bit modes. If using a 4 bit mode, then
SDMMC_D[5] through SDMMC_D[7] are simply left unconnected.
Pin Number
Description
Pin Number
Description
1
SDMMC_D[7]
2
V_3V3
3
GND
4
V_3V3
5
SDMMC_D[6]
6
GND
7
GND
8
GND
9
SDMMC_D[2]
10
GND
11
GND
12
GND
13
SDMMC_D[1]
14
GND
15
GND
16
GND
17
SDMMC_D[5]
18
GND
19
GND
20
GND
21
SDMMC_D[0]
22
GND
23
GND
24
GND
25
SDMMC_D[4]
26
GND
27
GND
28
GND
29
SDMMC_D[3]
30
GND
31
GND
32
GND
33
SDMMC_RST#
34
GND
35
SDMMC_CMD
36
GND
37
NC
38
V_IO (usually 1.8V)
39
SDMMC_CLK
40
V_IO (usually 1.8V)