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Rev. 0.7 7/13

Copyright © 2013 by Silicon Laboratories

CP2104-EK

C P 2 1 0 4 - E K

C P 2 1 0 4   E

V A L U A T I O N

  K

I T

  U

S E R

S

  G

U I D E

1.  Kit Contents

The CP2104 Evaluation Kit contains the following items:



CP2104 Evaluation Board



RS232 Serial Cable



USB Cable



DVD



Quick Start Guide

2.  Relevant Documentation

Application notes can be found on the Interface Application Notes page for all fixed-function devices:

www.silabs.com/interface-appnotes

.



AN721: CP210x/CP211x Device Customization Guide

 — Customize the VID, PID, serial number, and 

other parameters stored in the CP2104 one-time programmable ROM.



AN197: Serial Communications Guide for CP210x

 — Programming guide for using the Virtual COM Port 

(VCP) drivers.



AN169: USBXpress Programmer’s Guide

 — Programming guide for using the USBXpress drivers.



AN220: C8051F32x and CP210x USB Driver Customization

 — VCP or USBXpress driver customization 

tool.



AN223: Port Configuration and GPIO for CP210x

 — Programming guide and DLL for runtime control of 

the CP2104 GPIO pins.



AN571: CP210x Virtual COM Port Interface

 — USB interface details for CP210x devices.

3.  Software Setup

The Software Development Kit (SDK) for the 

CP2104

 kit is included on the kit DVD. The latest version of this

installer can also be downloaded from the 

www.silabs.com/interface-software

 website. This package includes:



Device Customization Utility (AN721)



Documentation 

 

data sheet, application notes, user’s guide, quick start guide, etc.



CP210x Virtual COM Port (VCP) Drivers



Software 

— Driver Customization Utility (AN220) and programming examples

The Windows installer should launch automatically after inserting the 

DVD

. For Mac and Linux, browse to the

appropriate directory on the 

DVD

 to install the software package. Follow the instructions to install the SDK and

drivers to the system.

3.1.  USBXpress Driver Development Kit

The Silicon Laboratories USBXpress

® 

Development Kit provides a complete host software solution for interfacing to

CP210x devices. No USB protocol or host device driver expertise is required. Instead, a simple, high-level Application
Program Interface (API) for the host software is used to provide complete USB connectivity. The USBXpress
Development Kit includes Windows device drivers, Windows device driver installer, host interface function library
(host API) provided in the form of a Windows Dynamic Link Library (DLL). See Application Note AN169, “USBXpress
Programmer’s Guide” for detailed information on using the USBXpress drivers.

The USBXpress drivers are available here: 

www.silabs.com/usbxpress

.

Click the USBXpress Development Kit link in the Download for Windows 2000/XP/Server 2003/Vista/Win7 section
to download the USBXpress drivers. Run the installer and follow the steps to install the software to the desired

Summary of Contents for CP2104

Page 1: ...ftware website This package includes Device Customization Utility AN721 Documentation data sheet application notes user s guide quick start guide etc CP210x Virtual COM Port VCP Drivers Software Driver Customization Utility AN220 and programming examples The Windows installer should launch automatically after inserting the DVD For Mac and Linux browse to the appropriate directory on the DVD to ins...

Page 2: ...board is connected to a PC as shown in Figure 1 1 Connect one end of the USB cable to a USB Port on the PC 2 Connect the other end of the USB cable to the USB connector on the CP2104 evaluation board 3 Connect one end of the RS232 serial cable to the DB 9 connector on the CP2104 evaluation board 4 Connect the other end of the RS232 serial cable to the target serial device Figure 1 Hardware Setup C...

Page 3: ...he reference point of both the host application and the serial device and it can support serial device control requests defined in the Microsoft Win32 Communications API Examples for how to communicate with the device as a serial COM port are included in AN197 on the www silabs com interface appnotes page or in the SDK If the USBXpress drivers are used the CP2104 will appear as a USB USBXpress dev...

Page 4: ...ing Blocks Installed 6 1 LED Headers J2 J3 Connectors J2 and J3 are provided to allow access to the GPIO pins on the CP2104 Place shorting blocks on J2 and J3 to connect the GPIO pins to the four green LEDs DS0 DS3 These LEDs can be used to indicate active communications through the CP2104 Table 1 shows the LED corresponding to each header position 6 2 Universal Serial Bus USB Interface P1 A Unive...

Page 5: ... Remove the shorting block to power VIO from an external source Pins 3 4 Connects the main 3 V net to the CP2104 VDD Pin 6 The main 3 V net powers the other components four green LEDs and RS232 Sipex Part on the evaluation board Table 3 RS232 Pin Descriptions Pin Signal CP2104 Direction Description 1 DCD Input Data Carrier Detect 2 RXD Input Receive Data 3 TXD Output Transmit Data 4 DTR Output Dat...

Page 6: ...CP2104 EK 6 Rev 0 7 7 Schematic Figure 4 CP2104 Evaluation Board Schematic ...

Page 7: ...ual COM Port Driver Installation for Windows on page 1 Updated 2 2 1 USBXpress Installation for Windows on page 2 Removed 2 2 2 USBXpress Installation for Windows 98SE on page 2 Revision 0 4 to Revision 0 5 Updated Figure 3 with shorting blocks installed Revision 0 5 to Revision 0 6 Updated 3 Software Setup on page 1 Revision 0 6 to Revision 0 7 Updated 1 Kit Contents to change CD ROM to DVD Added...

Page 8: ...umes no responsibility for errors and omissions and disclaims responsibility for any consequences resulting from the use of information included herein Additionally Silicon Laboratories assumes no responsibility for the functioning of undescribed features or parameters Silicon Laboratories reserves the right to make changes without further notice Silicon Laboratories makes no warranty rep resentat...

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