rev. 0.5 7/13 copyright ? 2013 by silicon laboratories CP2102-EK CP2102-EK cp2102 e valuation k it u ser ? s g uide 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 pa ge 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 communicat ions 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 dv d. the latest version of this installer can also be downloaded from the www.silabs.com/interface-software website. this package includes: ?? device customizati on utility (an721) ?? documentation ? data sheet, application notes, user?s guide, quick start guide, etc. ?? cp210x virtual com port (vcp) drivers ?? software ? driver customization utility (a n220) 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 expe rtise 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 de vice 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 inform ation 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 wi ndows 2000/xp/server 2 003/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 inst allation directory is c:\silabs\mcu\usbxpress_sdk . further installation instructions for th e 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 1 2 3 4
CP2102-EK rev. 0.5 3 5. cp2102 software interface if the virtual com port drivers are us ed, the cp2102 will appe ar as a com port in the device manager, as shown in figure 2. the cp2102 will always us e the lowest available com port for ope ration. for instance, if com ports 1 and 2 are in use by other peripherals an d applications, the cp2102 will use com 3. the cp2102 functions identically to a com port from the re ference point of both the host application and the serial device, and it can support serial device cont rol 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, t he cp2102 will appear as a usb usbxpre ss device as shown in figure 2. examples for how to communicate wit h the device using the usbxpress interface are in cluded 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) c onnections 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) j1 cp2102 j3 j4 suspend j2 pin 2 pin 1 suspend suspend
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 ev aluation board to connect the cp2102 virtual serial port to external serial devices. see table 2 for the rs232 j1 pi n descriptions. the j2 connector is pro- vided to facilitate direct access to the cp2102?s uart sign als. 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 cp2102 e s
CP2102-EK rev. 0.5 7 d ocument c hange l ist 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. softwa re setup? to include installation instructions for software included on versions 4.0 and later of the cp210x drivers and product inform ation cd-rom. ? added installation instructions for usbxpress driver development kit in secti on ?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 c ontact i nformation 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 cust omers differentiate in the market with innovative low-power, s mall size, analog- intensive mixed-signal soluti ons. silicon labs' extensive pat ent portfolio is a testament to our unique approach and world-clas s 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 publ ication but is subject to change without notice. silicon laboratories assumes no responsibility for errors and om issions, and disclaims responsibi lity for any consequences resu lting from the use of information included herein. ad ditionally, silicon laboratorie s assumes no responsibility for the functioning of und escribed features or parameters. silicon laboratories reserves the right to make changes without further notice . silicon laboratories makes no wa rranty, rep- resentation or guarantee regarding the suitability of its products for any particular purpose, nor does silicon laboratories as sume any liability arising out of the application or use of any product or circuit, and s pecifically disclaims any and all liability, including wi thout limitation conse- quential or incidental damages. silicon laborat ories products are not designed, intended, or authorized for use in applications intended to support or sustain life, or for any other application in which the failure of t he silicon laboratories product could create a s ituation where per- sonal injury or death may occur. should buyer purchase or us e silicon laboratories products for any such unintended or unauthor ized ap- plication, buyer shall indemnify and hold silicon laboratories harmles s against all claims and damages.
|
