Silicon Laboratories CP2102 Manual de usuario

CP2102-EK

CP2102 EVALUATION KIT USER’SGUIDE

1. Kit Contents

The CP2102 Evaluation Kit contains the following items:

CP2102 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 CP2102 EPROM.

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.

AN571: CP210x Virtual COM Port Interface — USB interface details for CP210x devices.

3. Software Setup

The Software Development Kit (SDK) for the CP2102 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

location. The default installation directory is C:\SiLabs\MCU\USBXpress_SDK.

Further installation instructions for the WinCE drivers can be found in the ReadMe.txt file contained inside the

driver package.

CP2102-EK

2 Rev. 0.5

4. CP2102 Hardware Interface

The evaluation 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

CP2102 evaluation board.

3. Connect one end of the RS232 serial cable to the DB-9 connector on the

CP2102 evaluation board

4. Connect the other end of the RS232 serial cable to the target serial device.

Figure 1. Hardware Setup

CP2102 EK

Serial Device

RS232

CP2102 USB-to-

UART Bridge

USB

CP2102-EK

Rev. 0.5 3

5. CP2102 Software Interface

If the Virtual COM Port drivers are used, the CP2102 will appear as a COM port in the Device Manager, as shown

in Figure 2. The CP2102 will always use the lowest available COM port for operation. For instance, if COM ports 1

and 2 are in use by other peripherals and applications, the CP2102 will use COM 3.

The CP2102 functions identically to a COM port from the 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 CP2102 will appear as a USB USBXpress device as shown in Figure 2.

Examples for how to communicate with the device using the USBXpress interface are included in AN169 on the

www.silabs.com/interface-appnotes page.

Figure 2. CP2102 in Device Manager

CP2102-EK

4 Rev. 0.5

6. Target Board

The

CP2102

Evaluation Kit includes an evaluation board with a

CP2102

device pre-installed for evaluation and pre-

liminary software development. Numerous input/output (I/O) connections are provided to facilitate prototyping using

the evaluation board. Refer to

Figure 3

for the locations of the various I/O connectors.

J1 DB9 connector for RS232 interface

J2 UART signal access connector

J3 USB connector for USB interface

J4 Not used

D1 SUSPEND indicator LED

Figure 3. CP2102 Evaluation Board

6.1. Universal Serial Bus (USB) Interface (J3)

A Universal Serial Bus (USB) connector (J3) is provided to facilitate connections to the USB interface on the

CP2102. See Table 1 for the USB pin definitions.

Table 1. USB Connector Pin Descriptions

Pin # Description

1 VBUS

2D-

3D+

4 GND (Ground)

CP2102 J3

SUSPEND

Pin 2

Pin 1

SUSPENDSUSPEND

CP2102-EK

Rev. 0.5 5

6.2. UART Signals (J1, J2)

A RS232 transceiver circuit and DB-9 connector (J1) are provided on the evaluation board to connect the CP2102

virtual serial port to external serial devices. See Table 2 for the RS232 J1 pin descriptions. The J2 connector is pro-

vided to facilitate direct access to the CP2102’s UART signals. Shorting blocks on J2 are required to connect the

UART signals to J1. See Table 3 for J2 pin descriptions.

Table 2. RS232 Pin Descriptions

Pin Signal CP2102 Direction Description

1 DCD Input Data Carrier Detect

2 RXD Input Receive Data

3 TXD Output Transmit Data

4 DTR Output Data Terminal Ready

5 GND Ground

6 DSR Input Data Set Ready

7 RTS Output Request to Send

8 CTS Input Clear to Send

9 RI Input Ring Indicator

Table 3. J2 Pin Descriptions

Pins Signal CP2102 Direction Description

1-2 TXD Output Transmit Data

3-4 RXD Input Receive Data

5-6 DTR Output Data Terminal Ready

7-8 RI Input Ring Indicator

8-10 DCD Data Carrier Detect

11-12 DSR Input Data Set Ready

13-14 CTS Input Clear to Send

15-16 RTS Output Request to Send

CP2102-EK

6 Rev. 0.5

7. Schematic

SUSPEND LED

CP2102

Figure 4. CP2102 Evaluation Board Schematic

CP2102-EK

Rev. 0.5 7

DOCUMENT CHANGE LIST

Revision 0.1 to Revision 0.2

Updated Figure 3 on page 4:

Pin 1 and Pin 2 labels have been corrected

Revision 0.2 to Revision 0.3

Updated CD-ROM contents in Section “1. Kit

Contents” to correspond with versions 4.0 and later

of the CP210x Drivers and Product Information CD-

ROM.

Updated Section “3. Software Setup” to include

installation instructions for software included on

versions 4.0 and later of the CP210x Drivers and

Product Information CD-ROM.

Added installation instructions for USBXpress Driver

Development Kit in Section “3. Software Setup”.

Added screenshots in Section “5. CP2102 Software

Interface”, for the Device Manager window after

correct installation of driver software.

Revision 0.3 to Revision 0.4

Updated "3. Software Setup" on page 1.

Revision 0.4 to Revision 0.5

Updated “1. Kit Contents” to change CD-ROM to

DVD.

Added “2. Relevant Documentation”.

Updated “3. Software Setup” to point to the drivers

on the website.

Updated Figure 1 and Figure 2.

CP2102-EK

8 Rev. 0.5

CONTACT INFORMATION

Silicon Laboratories Inc.

400 West Cesar Chavez

Austin, TX 78701

Tel: 1+(512) 416-8500

Fax: 1+(512) 416-9669

Toll Free: 1+(877) 444-3032

Please visit the Silicon Labs Technical Support web page:

https://www.silabs.com/support/pages/contacttechnicalsupport.aspx

and register to submit a technical support request.

Patent Notice

Silicon Labs invests in research and development to help our customers differentiate in the market with innovative low-power, small size, analog-

intensive mixed-signal solutions. Silicon Labs' extensive patent portfolio is a testament to our unique approach and world-class engineering team.

Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.

Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders.

The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice.

Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from

theuseofinformationincludedherein.Additionally, Silicon Laboratories assumes no responsibility forthefunctioningofundescribed features

or parameters. Silicon Laboratories reserves the right to make changes without further notice. Silicon Laboratories makes no warranty, rep-

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