Dual Usb-To-Uart Bridge - Xilinx KCU116 User Manual

The LED functional description is show in
Table 3‐13: Ethernet PHY LED Functional Description
Pin
Name No.
LED_2 45
LED_1 46
LED_0 47
Dual USB‐to‐UART Bridge
[Figure 2-1, callout 18]
The KCU116 evaluation board contains a Silicon Labs CP2105GM dual USB-to-UART bridge
device (U166) that allows a connection to a host computer with a USB port. The USB cable
is supplied in the KCU116 evaluation kit (standard type-A end to host computer, type
micro-B end to KCU116 evaluation board connector J164). The CP2105GM is powered by
the USB 5V provided by the host PC when the USB cable is plugged into the USB port on the
KCU116 evaluation board.
The dual UART interface connections are split between two components:
• UART1 SCI 4-wire interface is connected to the XCKU5P U1 FPGA
• UART2 ECI 2-wire interface is connected to the XC7Z010 U161 Zynq-7000 SoC system
controller
Silicon Labs provides royalty-free virtual COM port (VCP) drivers for the host computer.
These drivers permit the CP2105GM dual USB-to-UART Bridge to appear as a pair of COM
ports to communications application software (for example, Tera Term or HyperTerm) that
runs on the host computer. The VCP device drivers must be installed on the host PC prior to
establishing communications with the KCU116 evaluation board. The driver assigns the
lower PC COM port number to UART2 and the higher PC COM port number to UART1.
KCU116 Board User Guide
UG1239 (v1.2) September 28, 2018
Table
Type
By default, this pin indicates receive or transmit activity.
Additional functionality is configurable by means of
S, I/O, PD
LEDCR1[11:8] register bits.
This pin is a strap configuration pin for RGZ devices only.
Note:
By default, this pin indicates that 100BASE-T link is
S, I/O, PD established. Additional functionality is configurable by
means of LEDCR1[7:4] register bits.
By default, this pin indicates that a link is established.
S, I/O, PD Additional functionality is configurable by means of
LEDCR1[3:0] register bits.
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Chapter 3: Board Component Descriptions
3-13.
Description
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