ZYNQ Ultr FPGA Board AXU4EV-E User Manual
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Figure 3-6-1: USB to serial port schematic
USB to serial port ZYNQ pin assignment:
Part 3.7: SD Card Slot Interface
The AXU4EV-E FPGA Development Board contains a Micro SD card
interface to provide user access to the SD card memory, the BOOT
program for the ZU4EV 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
ZU4EV. 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 Zynq7000 PS and SD card connector is shown in Figure 3-7-1:
Signal name
Pin Name
Pin Number
Description
PS_UART0_TX
PS_MIO43
K19
PS Uart Data Output
PS_UART0_RX
PS_MIO42
L18
PS Uart Data Input
PL_UART_TX
B43_L3_P
AH12
PL Uart Data Output
PL_UART_RX
B43_L3_N
AH11
PL Uart Data Input