REL1.1
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iWave Systems Technologies Pvt. Ltd.
RZ/G1C SBC Hardware User Guide
2.5.4
Micro SD Connector
The RZ/G1C SBC supports Micro SD connector which can be used to connect Micro SD card as Mass storage. Micro
SD card connector (J16) is directly connected to the SDHI2 controller of the RZ/G1C CPU. It supports Default, high-
speed and UHS-I/SDR50 transfer modes upto 78 MHz. It also supports card detect feature through RZ/G1C GPIO
“
GP4_20
”
. The main power to Micro SD Card Connector is 3.3 Voltage.
The RZ/G1C SBC supports configurable IO voltage levels for SDHI2 lines which can be controlled through CPU GPIO
GP2_24. If GP2_24 is set to low, then 1.8V IO level is selected for SDHI2 lines. If GP2_24 is set to high, then 3.3V IO
level is selected for SDHI2 lines. Micro SD Connector is physically located on bottom side of the SBC as shown below.
Figure 4: Micro SD Connector