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ZYNQ Ultr FPGA Board AXU7EV User Manual
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Part 3.11: SD Card Slot Interface
The AXU7EV FPGA Development Board contains a Micro SD card
interface to provide user access to the SD card memory, the BOOT
program for the ZU7EV chip, the Linux operating system kernel, the file
system and other user data files.
The SDIO signal is connected to the IO signal of the PS BANK501 of
ZU7EV. Since the VCCMIO of the BANK is set to 1.8V, but the data level of the
SD card is 3.3V, connected through the TXS02612 level shifter. The schematic
of the ZU7EV PS and SD card connector is shown in Figure 3-11-1:
Figure 3-11-1: SD Card Connection Diagram
SFP2_TX_N
225_TX3_N
W5
Optical Module 2 Data Transmit Negative
SFP2_TX_P
225_TX3_P
W6
Optical Module 2 Data Transmit Positive
SFP2_RX_N
225_RX3_N
W1
Optical Module 2 Data Receive Negative
SFP2_RX_P
225_RX3_P
W2
Optical Module 2 Data Receive Positive
SFP_TX_DIS
B88_L3_N
A2
Optical Module Light Emission Prohibited, High
Level (Positive) Enable
SFP1_LOSS
B88_L7_P
C4
Optical Module 1 Receive LOSS
Detect Signal
SFP2_LOSS
B88_L7_N
B4
Optical Module 2 Receive LOSS
Detect Signal