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iWave Systems Technologies Pvt. Ltd.
Zynq Ult MPSoC (ZU11/17/19EG) SOM DevKit Hardware User Guide
2.4.5
Standard SD Port
The Zynq Ult MPSoC (ZU11/17/19EG) Carrier Board supports one SD interface through SD1 interface of Zynq
Ult MPSoC (ZU11/17/19EG) PS. This SD1 signals from Board to Board connector2 is connected to Standard SD
connector (J33) through auto-direction control memory card voltage level translator to support both 1.8V and 3.3V
supported cards. It supports up to 4-Bit data transfer with card detect and write protect.
The memory card voltage level translator
’s
voltage selection is controlled through PS GPIO (PS_MIO43_501) pin from
Board to Board Connector2 pin44. 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. The Standard
SD connector (J33) is physically located at the bottom of the board as shown below.
Figure 15: Standard SD Connector