Part 7: Usb To Serial Port - Alinx ZYNQ7000 FPGA User Manual

PCIE_CLK0_P
PCIE_CLK0_N
SFP_CLK0_C_P
SFP_CLK0_C_N

Part 7: USB to Serial Port

The development board is equipped with a Uart to USB interface for
separate power supply and debugging of the core board. The conversion chip
uses the USB-UAR chip of Silicon Labs CP2102GM. The USB interface uses
the MINI USB interface. It can be connected to the USB port of the upper PC
with a USB cable for separate power supply and serial data communication of
the core board.
The schematic diagram of the USB Uart circuit design is shown in Figure 7-1:
U1
ZYNQ
USB to serial port ZYNQ pin assignment:
Signal name
UART_RXD
24 / 46
ZYNQ FPGA Development Board AX7350B User Manual
UART_TXD
BANK
500 UART_RXD
Figure 7-1: USB to serial port schematic
ZYNQ Pin Name
PS_MIO13_500
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R6
R5
AA6
AA5
U20
RXD
VBUS
UART-USB
REGIN
(CP2102-GM)
TXD
D+/-
ZYNQ Pin
Number
B25
J11
Micro USB
Description
Uart data input