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rev. 0.1 6/13 copyright ? 2013 by silicon laborato ries si501/2/3/4-evb si501/2/3/4-evb si501/2/3/4-evb u ser ? s g uide description the silicon laboratories si501-2-3-4-evb is a usb plug-in board that allows for evaluation of the si50x family of cmems oscilla tors. the si501-2-3-4-evb comes completely assembled, tested, and populated with one si504 device and three empty expansion sites. features ?? easy evaluation of silicon laboratories' si501/ 2/3/4 cmems oscillators ?? windows-compatible control software?si50x cmems oscillator evb gui ?? powered by usb port ?? retains device configuration in flash for testing over temperature when not connected to usb ?? sma connectors for out put clock connection to external test equipment or target systems ?? test points for direct measurement of device supply current ?? on-board voltage regu lator with jumper selectable operation of 1.8, 2.5, or 3.3 v figure 1. si501-2-3-4-evb front side view figure 2. si501-2-3-4-evb rear side view
si501/2/3/4-evb 2 rev. 0.1 1. quick start 1. install the si50x evb gui software by downloading it from www.silabs.com/si501-2-3-4-evb 2. launch the si50x evb gui soft ware. the following screen shou ld appear on your desktop:
si501/2/3/4-evb rev. 0.1 3 3. insert the si501-2-3- 4-evb board into an unused usb port. you sh ould now see same screen as before, but with a green "check" next to evb board graph ic. evb is now recognized by gui software.
si501/2/3/4-evb 4 rev. 0.1 4. default frequency clock of 100 mhz should now be output from sma "j1" circled below. 5. to change the output frequency, enter a desire d frequency in "new frequency" field and press "set frequency" button. 6. the si504 can be placed in any supported run mo de or power/jitter mode by pressing the appropriate radio buttons. the gui will automatically update the device. 7. the freq adj and offset adj tabs are for utilizing th e frequency offset feature of the si504. us e the offset adj tab to enter an offset in terms of ppm. use the freq adj tab to enter an offset in terms of desired frequency.
si501/2/3/4-evb rev. 0.1 5 1.1. evb gui quick start guide figure 3. main screen 504jcab001003dag 100mhz cmems oscillator offset step size. changeable. clears all offsets. fclk reverts to no offset value. offset value in ppm and/or hex. change fclk up (+) or down ( r ) by the offset step size. change fclk by entering offset on the offset adj. tab, or by entering desired fclk on freq adj. tab return the device to default fclk tabs to configure the gui to control sample devices in u2/u3/u4 drop down menus for gui reset, updates, data sheets, user guide, help enter the desired new fclk c1d activity indicator mode select power vs period jitter select drive strength select
6 rev. 0.1 si501/2/3/4-evb figure 4. eval config screen eval footprint allows gui to control evaluation sample push configure button to set up sample config in gui enter ordered part number or configuration options in drop downs below. blank space here if for devices with more than one frequency user must hit after inputting the last fclk value. click ok to deploy the config to the gui.
si501/2/3/4-evb rev. 0.1 7 figure 5. eval screen example si503 evaluation control panel change the configuration options. toggle between available frequencies. note: the gui cannot change frequencies on any device other than a si504. the available frequencies are those already programmed in the device. tab corresponds to circled location on the evb. note: the gui cannot change configuration options on the target device. the available options and frequencies are those already programmed in the device.
si501/2/3/4-evb 8 rev. 0.1 table 1. quick start drop down menus drop down menu selection function options return gui to default re sets gui completely to orig inal settings. clears all eval footprint settings and u1 504 settings. exit exits gui. tools check for evb sw update checks www.silabs.com for any available gui updates. check for evb fw update checks www.silabs.com for any available fw updates for the evb mcu. advanced ? update fw updates evb fw wit h file saved to hard drive. save evb configuration stores current evb configuration to mcu fw. this is use- ful for temperature testing without usb connection. open evb configuration find evb configuration file on hard drive and load it to the gui / evb. return evb to default returns evb fw to default settings. help user?s guide opens user?s guide pdf. device data sheet opens latest device data sheet. later revisions of the data sheet are loaded with new gui sw updates. gui software version provides the gui sw version number. evb firmware version provides the evb fw version number.
si501/2/3/4-evb rev. 0.1 9 2. mcu the silicon laboratories mcu, p/n c8051f380, is moun ted on the back side of the board at u6. the mcu provides the following functions: ?? supports usb communication to host pc ?? supports single-wire communication (c1) to the dut on behalf of the host pc per the evb gui software ?? supplies 3.3 v to peripheral ics (the serial number generator and the c1 voltage level shifter) 3. power supply the si501/2/3/4-evb can be powered from usb or from an external voltage supply. this is to support temperature testing without a usb connection. the power supply consis ts of a maxim max8869 adjustable voltage regulator that steps down the usb +5 v or an external +5v power s upply to one of a selectable 1.8, 2.5, or 3.3 v. vdd selection is made via jumper p2. the supply voltage for all the device sites, both si 504 and eval sites, can be adjusted to one of three settings: 3.3 v, 2.5gv, or 1.8 v by jumper p2. (note that all four locations share the same supply voltage, so any supply volta ge change will affect all devices at si tes u1, u2, u3, and u4.) the default setting, connecting pins 2 and 3 as sh own above, is 3.3 v. moving the jumper to connect pins 1 and 2 results in 2.5 v. removing the jumper al together will result in 1.8 v supply volt age. the voltage regulator may be bypassed by connecting vdd directly to the vdd p1 connection point. 4. leds two green indicator leds are driven by the on-board mcu. a "ready" led (d1) is illu minated to indicate the evb is recognized by the evb gui softwa re and ready for use. a "usb" led (d2) is illuminated whenever usb communications are actively in progress.
si501/2/3/4-evb 10 rev. 0.1 5. current sense resistor figure 6. current sense resistor location each device site has a 1.0 ? resistor in series with the vdd supply of th at device. both sides of that resistor are connected to a set of test points. this test point pair can be used to measure the voltage across that supply resistor, which indicates the supply curr ent consumed by the respective device. 6. outputs figure 7. sma outputs each device site output is connected to a sma connector through a series resistor. j1 is the sma connector output of the on-board si504, with j2 through j4 co rresponding to evaluation sites u2 through u4.
si501/2/3/4-evb rev. 0.1 11 7. schematics figure 8. si501/2/3/4 schematic (1 of 2)
si501/2/3/4-evb 12 rev. 0.1 figure 9. si501/2/3/4 schematic (2 of 2)
si501/2/3/4-evb rev. 0.1 13 8. bill of materials table 2. si501-2-3-4-evb rev 4.0 ni qty reference value rating volt tol type pcb_footprint manufacturerpn manufacturer 17 c1 c2 c5 c6 c11 c12 c18 c19 c21 c23 c24 c25 c26 c27 c28 c29 c30 0.1 f 10v 10% x7r c0402|c0402l c0402x7r100-104k venkel 2 c13 c15 1 f 10v 10% x7r c0603 c0603x7r100-105k venkel 1 c14 10 f 25v 20% x7r c1210 c1210x7r250- 106m venkel 1 c17 0.01 f 10v 20% x7r c0402 c0402x7r100- 103m venkel 1 c20 1 f 25v 10% x7r c1206 c1206x7r250-105k venkel 1 c22 4.7 f 10v 20% x7r c1206 c1206x7r100- 475m venkel 2 d1 d2 green 20ma 3.4v smt, chip- led led-hsmx-c170 hsmq-c170 avago technolo- gies 2 d3 d4 mmbd3004s-7-f 225ma 300v dual sot23-akc mmbd3004s-7-f diodes inc. 4 j1 j2 j3 j4 sma sma sma-edge-3 142-0701-801 johnson compo- nents 1 j7 usb type a usb usb_a_ra_smt 48037-1000 molex 1 p2 header 1x3 header conn1x3-mra tsw-103-08-t-s-ra samtec 4 r1 r2 r7 r8 49.9k 1/16w 1% thickfilm r0603 cr0603-16w-4992f venkel 1 r14 10k 1/16w 5% thickfilm r0402 cr0402-16w-103j venkel 2 r15 r16 20k 1/16w 1% thickfilm r0402 cr0402-16w-2002f venkel 1 r17 47k 1/16w 1% thickfilm r0603 cr0603-16w-4702f venkel 1 r18a 36.5k 1/16w 1% thickfilm r0603 cr0603-16w-3652f venkel 1 r18b 53.6k 1/10w 1% thickfilm r0603 cr0603-10w-5362f venkel
14 rev. 0.1 si501/2/3/4-evb 1 r18c 25.5k 1/16w 1% thickfilm r0603 cr0603-16w-2552f venkel 3 r19 r20 r21 1k 1/16w 5% thickfilm r0402 cr0402-16w-102j venkel 4 r22 r23 r24 r25 1.0 1/4w 5% thickfilm r1206 cr1206-4w-1r0j venkel 4 r3 r4 r9 r10 6.04k 1/16w 1% thickfilm r0603 cr0603-16w-6041f venkel 5 r5 r6 r11 r12 r26 0 1a thickfilm r0402|r0402l cr0402-16w-000 venkel 3 sf1 sf2 sf3 bumper rubber_- foot_small sj61a6 3m 1 u1 100 mhz mems osc4n2.0x2.5 504jcab001003da g silabs 1 u13 c8051f380 mcu qfp48n9x9p0.5 cf380-px0746gq silabs 1 u7 max8869 1a ldo tssop16n6.5p0.6 5e max8869eue50 maxim 1 u8 ds2411 soj6n4.45p1.27 ds2411p+ maxim 4 u9 u10 u11 u12 sn74avc1t45 1.2- 3.6v sot6n2.8p0.95 sn74avc1t45dbv ti not installed components ni qty reference value rating volt tol type pcb_footprint manufacturerpn manufacturer ni 1 p1 header 1x3 header conn-1x3 tsw-103-07-l-s samtec ni 12 tp1 tp2 tp3 tp4 tp5 tp6 tp7 tp8 tp9 tp10 tp11 tp12 white loop testpoint 151-201-rc kobiconn ni 1 u2 xxmhz mems osc4n3.2x5.0 silabs ni 1 u3 xxmhz mems osc4n3.2x2.5 silabs ni 1 u4 xxmhz mems osc4n2.0x2.5 silabs table 2. si501-2-3-4-evb rev 4.0 (continued) ni qty reference value rating volt tol type pcb_footprint manufacturerpn manufacturer
si501/2/3/4-evb rev. 0.1 15 9. layout figure 10. front side assembly figure 11. rear side assembly
si501/2/3/4-evb 16 rev. 0.1 figure 12. front side (layer 1) figure 13. front side inner layer 1
si501/2/3/4-evb rev. 0.1 17 figure 14. front side inner layer 2 figure 15. rear side
si501/2/3/4-evb 18 rev. 0.1 10. fabrication drawing
si501/2/3/4-evb rev. 0.1 19 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 responsibili ty for errors and omissions, and disclaim s responsibility for any consequences resu lting from the use of information included herein. a dditionally, silicon laboratorie s assumes no responsibility for the functioning of und escribed fea- tures or parameters. silicon laboratories reserves the right to make changes without further notice. silicon laboratories makes no warran- ty, representation or guarantee regarding t he suitability of its products for any par ticular purpose, nor does silicon laborato ries assume any liability arising out of the application or use of any product or circuit, and specif ically disclaims any and all liability, in cluding without limitation consequential or incidental damages . silicon laboratories products are not designed, intended, or authorized for use in applica tions intend- ed to support or sustain life, or for any other application in which the failure of the silicon laboratories product could crea te a situation where personal injury or death may occur. should buyer purchase or us e silicon laboratories products for any such unintended or unaut horized application, buyer shall indemnify and hold silicon laboratories harmle ss against all claims and damages.

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