rev. 0.2 9/10 copyright ? 2010 by silicon laboratories cp2110-ek cp2110-ek cp2110 e valuation k it u ser ? s g uide 1. kit contents the cp2110 evaluation kit contains the following items: ?? cp2110 evaluation board ?? cp2110 product information cd-rom. cd content includes: ?? example windows and mac applications ?? documentation: ?? cp2110 data sheet ?? cp2110 evaluation kit user's guide ?? an434: cp2110 interface specification ?? an433: cp2110 hid-to-uart api specification ?? rs-232 serial cable ?? usb cable 2. software setup the included cd-rom contains the example applications fo r pc and mac and additional documentation. insert the cd-rom into a system?s cd-rom drive. if using a windows pc an insta ller will automatically launch, allowing you to install the software or read documentation by clicking buttons on the installation panel. if the installer does not automatically start when yo u insert the cd-rom, run autorun.exe found in the root directory of the cd-rom. refer to the releasenotes cp210x cd.txt file on the cd-rom for the latest in formation regarding versions and known problems and restrictions. if a non-windows pc is used, manually browse to the directory on the cd-rom that contains the software for your os. the instructions in this document assume a windows pc is being used. 3. cp2110 hardware interface connect the cp2110 evaluation board 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 t he usb connector on the cp2110 evaluation board. 3. connect one end of the rs-232 serial cable to th e db-9 connector on the cp2110 evaluation board. 4. connect the other end of the rs-232 seri al cable to the target serial device. figure 1. hardware setup cp2110 eval board usb cable pc usb port rs232 usb serial device rs232
cp2110-ek 2 rev. 0.2 4. cp2110 windows application the hiduart application is an example application that uses the windows cp2110 hid-to-uart dll to transmit and receive data with the cp2110. the application also has access to the cp2110?s gpio pins. the hiduart application is installed as part of the cd installation process. the following steps describe how to start the application and use some of the features. 1. ensure that the hardware is connected to a windows pc as shown in section 3. if the device is properly connected, the red suspend led on the cp2110 evaluation board will turn on. 2. launch the hiduart application, which is found by clicking start ? all programs ? silicon laboratories ? hiduart example . 3. in the application, configure the baud rate, data bits, pari ty, stop bits, and type of flow control using the drop-down menus. this configuration should match the communi cation settings used by the serial device. 4. click connect to start communication between the application and the cp2110 evaluation board. once connected, the usb descriptors retrieved from the devi ce are shown under ?device information.? figure 2. hiduart example application after connection 5. type data in the transmit text box and click transmit to send data from the pc to the serial device. 6. send data from serial device to the pc. any data sent by the serial device to the pc is automatically updated in the receive text box. 7. the hiduart example automatic ally recognizes how the gpio pins are configured and enables/disables the ability to change and read the pin. the def ault configuration is shown in figure 2. use the get and set buttons to read and write the gpio pins? latch values. for gpio pins that are configured as out puts, setting the pin to logic low ?0? will turn on the corresponding led on the cp2110 evaluation board.
cp2110-ek rev. 0.2 3 5. evaluation board overview the cp2110 evaluation kit includes an evaluation board with a cp2110 device pre-installed for evaluation and preliminary 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. p1 db9 connector for rs-232 interface p2 usb connector for usb interface j1 uart signal access connector j2 vdd and vio power connectors j3 gpio0 and gpio1 led connectors j4 gpio2 and gpio3 led connectors j5 gpio4 and gpio5 led connectors j6 gpio6 and gpio7 led connectors j7 gpio8 and gpio9 led connectors j8 regin pin power connector j9 suspend red led connector j12 self-power mode vdd and gnd access connectors figure 3. cp2110 evaluation board with default shorting blocks installed 5.1. led headers ( j3, j4, j5, j6, j7) connectors j3, j4, j5, j6, and j7 are provided to allow access to the 10 gpio pins on the cp2110. place shorting blocks on these headers to connect the gpio pins to the 10 green leds d0 - d9. these leds can be used to indicate active communications through the cp2110. table 1 shows the led corresponding to each header position. table 1. j2 and j3 led locations led pins led pins gpio0-d0 j3[3:4] gpio4-d7 j5[1:2] gpio1-d1 j3[1:2] gpio6-d4 j6[3:4] gpio2-d2 j4[3:4] gpio7-d5 j6[1:2] gpio3-d3 j4[1:2] gpio8-d8 j7[3:4] gpio4-d7 j5[3:4] gpio9-d9 j7[1:2] u1 p2 p1 j9 j12 j5 j3 j6 j7 j2 j4 d1 d0 d5 d4 d9 d8 d6 d7 d3 d2 d10 u2 j1 j8 www.silabs.com silicon labs cp2110-eb
cp2110-ek 4 rev. 0.2 5.2. universal serial bus (usb) interface (p2) a universal serial bus (usb) connector (p2) is provided to facilitate connections to the usb interface on the cp2110. see table 2 for the usb pin definitions. 5.3. uart signals (p1, j1) an rs-232 transceiver circuit and db9 connector (p1) ar e provided on the evaluation board to connect the cp2110 virtual serial port to external serial devices. see table 3 for the rs-232 p2 pin descriptions. the j1 connector is provided to facilitate direct access to the cp2110?s uart signals. shorting blocks on j1 are required to connect the uart signals to p2. see table 4 for j1 pin descriptions. table 2. usb connector pin descriptions pin # description 1 vbus 2d? 3d+ 4 gnd (ground) table 3. rs-232 pin descriptions pin signal cp2110 direction description 2 rxd input receive data 3 txd output transmit data 5 gnd ground 7 rts output request to send 8 cts input clear to send table 4. j1 pin descriptions pins signal cp2110 direction description 1-2 txd output transmit data 3-4 rxd input receive data 5-6 rts output request to send 7-8 cts input clear to send
cp2110-ek rev. 0.2 5 5.4. vdd and vio power connector (j2) this header (j4) is included on the evaluation board to provide several power options. the following describes the function of each pin: ? pins 1,3: connects cp2110 vio input (pin 5) to cp21 10 vdd (pin 6). remove the shorting block to power vio from an external source. ? pins 2,4: connects the main +vdd_a net to the cp2110 vdd (pin 6). the main +vdd_a net powers the rs-232 transceiver on the evaluation board. 5.5. regin power connect or and self-powered mode connector (j8, j12) the j8 header is used to connect the cp2110 regin pi n (pin 7) to the vbus source from the usb connector (default) or to the cp2110 vdd pin (pin 6). when conn ected to the vbus source, the device is intended for bus- powered operation. when connected to the cp2110 vdd pi n, the device is intended for self-powered operation. when in self-powered operation, an external power source can be connected to the j12 header to power the vdd pin directly. 5.6. .suspend led connector (j9) the j9 header is used to connect the cp2110 suspend pin (pin 17) to the d10 red led. when the led is on, the device has enumerated with the pc operating normally. when the led is off, the device has not yet enumerated or is in the usb suspend state.
cp2110-ek 6 rev. 0.2 6. schematic figure 4. cp2110 evaluation board schematic
cp2110-ek rev. 0.2 7 n otes :
cp2110-ek 8 rev. 0.2 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. 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.
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