Micro-Sd Socket - Data Modul eDM-CB-SM-IPCS Reference Manual

3.2. Micro-SD Socket

Reference designator: J40
Micro-SD connector; ultra-low-profile; push-push type
Description
The micro-SD ultra-low-profile, push-push type socket provides 4-bit SDIO interface of the SMARC module. The
SDIO performance is depended on used SMARC module platform.
Interfaces used
SDIO interface of the SMARC module
Connector drawing and contact-numbering scheme
Figure 4 Micro-SD Socket – J40
Pinout
Pin Signal / Function
1 SDIO_DATA2
2 SDIO_DATA3
3 SDIO_CMD
J40 4 VCC
5 SDIO_CLK
6 GND
7 SDIO_DATA0
8 SDIO_DATA1
14
Pin Type Signal Description
IO (1.8/3.3V) Serial data line 2
IO (1.8/3.3V) Serial data line 3
IO (1.8/3.3V) Command Line
3.3V power-supply for connected device; max. current
Power(3.3V)
100mA
O (1.8/3.3V) Data clock
GND Device power ground
IO (1.8/3.3V) Serial data line 0
IO (1.8/3.3V) Serial data line 1
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12048231 Rev. 00 (Draft)