Part 3.8: Usb To Serial Port - Alinx ZYNQ7000 FPGA User Manual

PCIE_RX1_N
PCIE_TX0_P
PCIE_TX0_N
PCIE_TX1_P
PCIE_TX1_N
PCIE_CLK_P
PCIE_CLK_N
Figure 3-7-2: The PCIe Interface on the Expansion Board

Part 3.8: USB to Serial Port

The AX7021 expansion board is also equipped with a serial port interface for
overall debugging of the ZYNQ7000 system. 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 of the PC with a USB cable. The port
performs separate power supply and serial data communication of the core board.
Figure 3-8-1 detailed the schematic diagram of the USB Uart circuit design
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ZYNQ FPGA Development Platform AX7015 User Manual
AB7 PCIE Channel 1 Data Receive Negative
W4 PCIE Channel 0 Data Transmit Positive
Y4 PCIE Channel 0 Data Transmit Negative
AA3 PCIE Channel 1 Data Transmit Positive
AB3 PCIE Channel 1 Data Transmit Negative
U9 The Reference Clock of PCIE Positive
V9 The Reference Clock of PCIE Negative
Figure 3-8-1: USB Uart Circuit Design
Figure 3-8-2: USB Uart on the Expansion Board
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