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Zynq Ult MPSoC SBC Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.4.5
Micro SD Connector (Optional)
The Zynq Ult MPSoC SBC optionaly supports MicroSD Connector through SD1 interface of Zynq Ult
MPSoC PS. This SD1 Signals from Zynq Ult MPSoC PS is connected to Micro SD Connector (J24) through auto
direction control memory card voltage level translator to support 1.8V and 3.3V supported cards. It supports up to 4-
Bit data transfer with card detect.
The memory card voltage level translator’s
voltage selection is controlled through PS GPIO (PS_MIO43_501) pin from
Zynq Ult MPSoC PS. If PS_MIO43_501 is set to low, then 3.3V IO level is selected for SD1 signals to SD
connector. If PS_MIO43_501 is set to high, then 1.8V IO level is selected for SD1 signals to SD connector.