Sd Card Slot - Alinx Z19 User Manual

The third UART port is extracted from the PS side through a FPC connector with 1-mm
spacing and 10-pin, which can be used to connect peripherals such as the serial screen.
USB-to-serial ZYNQ pin assignment:
Signal Name
PS_UART_TX
PS_UART_RX
PL_UART_TX
PL_UART_RX
PS_UART2_TX
PS_UART2_RX

13. SD Card Slot

The Z19 expansion board includes a Micro SD card port to provide user access to the SD
card memory used to store the ZU19EG chip's BOOT program, 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 ZU19EG, and we
connect BANK 501 and SD card through the TXS02612 level converter because the
VCCIO of the 501 is set to 1.8V, but the data level of the SD card is 3.3V. The schematics
of the ZU19EG PS and SD card connectors are shown in Figure 13-1.
www.alinx.com
Pin Name
PS_MIO39_501
PS_MIO38_501
IO_L8N_HDGC_94
IO_L7P_HDGC_94
PS_MIO32_501
PS_MIO33_501
Figure 13-1: Diagram of the SD card connection
Pin Number
PS Uart1 data output
P29
PS Uart1 data input
R27
PL Uart data output
C3
PL Uart data input
C6
PS Uart1 data output
M30
PS Uart1 data input
N28
Z19 User Manual
Remarks
37 /
74