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woitha
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‎12-14-2017 05:59 AM

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Registered: ‎04-22-2013

Zynq SD-Card connection without level shifter

Hello,

 

I am working on a Zynq-Board (XC7Z010) based on the ZYBO-Board. The ZYBO-Board powers bank 501 (MIO1) with 1,8V. So it uses a level shifter to 3.3V to connect the SD-Card socket.

 

However the SD-Card interface and the 2 UART pins are all I need on bank 501. Is it possible to connect the SD-Card socket directly to the Zynq, when powering Bank 501 with 3.3V? Has anyone done this before? Is there anything I should consider (Pull-Up/-Downs e.g.)?

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d_zwygart
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‎05-02-2018 02:35 AM

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Registered: ‎05-02-2018

Hello

 

I have the same question:

 

  • I'm using a Z-7045
  • I have the SD-Card connected to MIO 40-45 which are all pins from bank 12.
  • I have set the bank voltage to 3,3V.

 

Do i still need a level shifter like the TXS02612RTWR or can i directly connect the SD-Card socket to the MIO pins?

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