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rev. 0.2 5/10 copyright ? 2010 by silicon laboratories SI57X-EVB SI57X-EVB si57 x /598/599 a ny f requency i 2 c p rogrammable xo/vcxo e valuation b oard description this document describes th e operation of the silicon laboratories si57x/598/599 evaluation kit. the si57x- evb kit refers to the eval uation board hardware and software intended for customer evaluation of the si57x/ 598/599 any frequency i 2 c programmable xo/vcxo. the SI57X-EVB kit contains the following: kit contents ? hardware ?? motherboard (mb)?silkscreen labeled as "si5xx programmable oscillator" ?? daughterboard (db)?silkscreen labeled as "si5xx ceb db" ? software ?? programmable oscillator software ?? register programmer ?? evb driver (usbxpress ? ) the si57x motherboard is normally operated together with a si57x daughterboard populated with an si570/ 571/598/599. this combination is referred to as the SI57X-EVB assembly th at is also used to evaluate the si598/599 any frequency i 2 c programmable xo/ vcxos. software is supplied for evaluation of the si57x/598/599 device. all si570 and si598 xos are pin and register compatible. the si571 and si599 vcxos are pin and register compatible. the SI57X-EVB supports all configurations of these devices. the software components run on a usb-equipped pc and are described in detail in "4. software installation" on page 12. note: si57x/598/599 samples must be ordered separately from the SI57X-EVB. features ? evaluation of silicon labor atories' si57x/598/599 any frequency i 2 c programmable xo/vcxo ? windows-compatible software control and device programming ? voltage regulator supports at +1.8, +2.5, or +3.3 v ? i 2 c communication options are jumper configurable ? voltage control (v c ) input port (si571/599) quick start 1. install an assembled si57x daughterboard on to the si57x motherboard. 2. verify si57x motherboard jumper settings are correct. (the default installation assumes a 3.3v oe active high dut. otherwise refer to table 3.) 3. connect the usb cabl e from the evb to the host pc. 4. install the evb driver on the host pc. 5. install the pr ogrammable oscillator software from the cd or zip file. 6. launch the programmabl e oscillator software by clicking start ? programs ? silicon laboratories ? programmable oscillator software and selecting one of the applications. note: the above instructions assume an assembled daugh- terboard is available. if it is not available, install the si57x/598/599 dut and place proper output compo- nents on the daughterboard as described in "1.9. si57x daughterboard" on page 9.
SI57X-EVB 2 rev. 0.2 figure 1. SI57X-EVB functional block diagram clkn clkp scl oe v dd sda jumper selection level translator and jumper selection (jumpers installed by default) clk? clk+ v c (si571/599 only) si57x/58/599 c8051f320 mcu dut vreg oe sda usb i/f +5 v input reset vc_mod 1.8/2.5/3.3 v si57x daughter board scl gnd
SI57X-EVB rev. 0.2 3 1. functional description the SI57X-EVB is the evaluation board assembly for the si 57x/598/599 an y frequency i 2 c programmable xo/ vco. this evaluation board assembly provides access to all signals for programming and operating the device. the SI57X-EVB assembly motherboard an d daughterboard schematics, bills of material, and pcb layouts are appended as sections 5, 6 and 7, respectively. referenc e designators below refer to the SI57X-EVB motherboard unless otherwise noted. the SI57X-EVB is oriented with the daughterboard at the bottom in the directions below. 1.1. motherboard-daughterboard connection the SI57X-EVB motherboard conn ects to the si57x daughterb oard at connectors j13-j14. each of these is a 2x20 pin, impedance controlled connector. th e connectors are keyed so there is only one proper way to install the board. orient the boards on installation so that the silk screen triangle on the daught erboard matches the silkscreen on the motherboard. 1.2. power supply the SI57X-EVB is pre-configured to accept 5 v from the usb connector at j15. to change the board's 5 v power supply from the usb connection to the terminal block at j18, make these changes: ? remove r7. ? populate r8. note: if both r7 and r8 are installed, do not simultaneously con nect to both the usb connector at j15 and to a separate 5 v supply at j18. otherwise, power supply contention may occur. typical supply current draw for the SI57X-EVB assembly (motherboard + daughterboard) is approximately 230 ma. see the device data sheet for device power consumption specifications. the evaluation daughter board are desig ned to operate at any of the following nominal voltages: 1. 8, 2.5, or 3.3 v. the SI57X-EVB has an on-board voltag e regulator which supplies any of th ese voltages. the SI57X-EVB voltage regulator is controlled via jumpers. by default, a jump er is installed, selecting 3.3 v for the si57x/598/599. alternatively, vreg may be set to 1.8 or 2.5 v per table 1. table 1. vreg jumpers voltage selection j6 jumper installation (assuming s/w control unavailable) 3.3 connect pin 1 ?3.3 v? to center pin 2 2.5 connect pin 3 ?2.5 v? to center pin 2 1.8 no jumper
SI57X-EVB 4 rev. 0.2 1.3. reset circuit the SI57X-EVB mcu may be reset by pressing momentary pushbutton sw1. it may also be held in reset by installing a jumper at j7. mc u outputs are open drain and ar e tri-stated during reset. th ey remain tri-stated unless otherwise directed under program control. there is no hardware reset for the si57x/598/599 itself. the si57x/598/599 is reset only on power-up or through software. pressing the SI57X-EVB motherboard pushbutton sw1 in an attempt to reset the si57x/598/599 may result in unexpected behavior. 1.4. usb a 4-pin usb receptacle is provided at location j15. the SI57X-EVB, via the mac?s usb function controller, is compatible with usb specification 2.0. when th e usb link is in use the mcu drives led d7. 1.5. mcu the mcu, silicon laboratories p/n c8051f320, provides the following functions: ? supports i 2 c communication to the dut on behalf of the host pc per the SI57X-EVB software ? drives a number of status indicator leds (see table 2) ? supplies 3.3 v to peripheral ics on the motherboard but not to the dut the mcu comes pre-loaded with firmware. while there is a provision for in-circuit programming at connector j12 located on the back, this should not be necessary. th e host pc operates the si 57x/598/599 software and communicates to the si57x/598/599 through the mcu via usb connector j15. when the usb link is in use, led d7 should be illuminated. as mentioned earlier, the mcu may be reset by pressing momentary pushbutton (sw1) or held in reset by installing a jumper at j7. 1.5.1. status signals there are seven leds on the si 57x-evb that report visual status as listed in table 2 and as high lighted in figure 2. upon power up, d1?d2 and only one of d3?d5 should be illuminated. d6 and d7 are only illuminated when in use. table 2. SI57X-EVB leds reference designation color signal or status indicated comments d1 red 5 v present connected to filtered 5 v d2 red mcu 3.3 v present connected to mcu 3.3 v output d3 red vreg 3.3 v selected d4 red vreg 2.5 v selected d5 red vreg 1.8 v selected d6 green oe active d7 green usb active under mcu control
SI57X-EVB rev. 0.2 5 figure 2. SI57X-EVB motherboard led locations
SI57X-EVB 6 rev. 0.2 1.5.2. jumpers there are eight ju mper locations on the si57x- evb as listed in table 3. (the reference designa tions j4-j5 and j16-17 are assigned to other connector types.) the default or pre-loaded jumpers are shown in figure 3. table 3. SI57X-EVB jumpers reference designation configuration signals default (pre-loaded) jumper installation j1 1x2 bypasses u3 level translator. connects signal mcu_sda to signal 57x_sda. installed supports dut_vdd = 2.5 or 3.3 v nominal. j2 1x2 bypasses u3 level translator. connects signal mcu_scl to signal 57x_scl. installed supports dut_vdd = 2.5 or 3.3 v nominal. j3 1x2 disables oe active low signal. see "1.7. si57x/598/599 digital control signals" on page 8. not installed j6 1x3 selects voltage regulator output supplying dut_vdd. see "1.2. power supply" on page 3 and table 1 on page 3. installed in 3.3 v position. ready for mcu control. (default voltage selection is 1.8 v if no jumper is installed.) j7 1x2 reset not installed j8 1x2 57x sda test pins only. not installed j9 1x2 disables oe active high signal. see ?1.7. si57x/598/599 digital control signals? . not installed j10 1x2 57x scl test pins only. not installed j11 2x3 disables u3 level translator. installed supports dut_vdd = 2.5 or 3.3 v nominal.
SI57X-EVB rev. 0.2 7 level translator jumpers (default installed) figure 3. SI57X-EVB motherboard oe component locations
SI57X-EVB 8 rev. 0.2 1.6. si57x/598/599 i 2 c communication configuration the si57x/598/599 supports i 2 c serial communication through the sda and scl pins. all si570 and si598 xos are pin and register compatible, and all si571 and si599 vcxos are pin and register compatible. the device can be operated as an i 2 c slave only. the mcu supports i 2 c communication to the du t. the SI57X-EVB must be configured by jumpers as described below to select the intended i 2 c communications path depending on the dut's nominal supply voltage. for i 2 c communication with the si57x/598/599 dut = 2.5 or 3.3 v nominal, there must be jumpers installed at j1, j2, and j11 pin 2. this defeats and bypasses the installed bidirectional voltage level translator at u3. (for i 2 c communication with the si57x/598/ 599 dut at 1.8 v nominal supply, please consult the factory.) 1.7. si57x/598/599 di gital control signals there is one normally static digital input control signal that routes to the si57x/598/599: output enable or oe. by default, the oe signal is pulled high on the SI57X-EVB and may be pulled low by installing a jumper at j9. to support oe active low control, make th e following changes to the si57x motherboard: ? install r9. ? remove r14. you can then selectively disable the oe active low by installing a jumper at j3. se e figure 4 for the location of these components. 1.8. si57x/598/599 voltage control signal an external voltage control signal may be applied to the control voltage modulation input at sma connector j17, silkscreen designation vc_mod). this voltage supplies the control voltage or voltage modulation input to an si571 when installed on the db. no jumper changes are require d to support the si570/598 versus the si 571/599. pin 1 on the si571 is the v c pin and is a n/c for the si570.
SI57X-EVB rev. 0.2 9 1.9. si57x daughterboard the si57x daughterboard can accommodate either si570/571/ 598/599 devices and supports all output formats. all si570 and si598 xos are pin and register compatible , and all si571 and si599 vcxos are pin and register compatible. typically, the boards are shipped without the sample device or any output components. table 4 lists suggested output loading options for different output formats and coupling configurations. table 4. si57x daughterboard output loading options output format config ref des location value comments cml ac coupling only c2,c3 0.1 f ac coupling capacitors cmos near end load on board j3 conn, header, 2x1 high z probe test point r3 15 pf install 0603 load capacitor at resistor location. far end load off board c3 33?50 ? install 0603 source impedance matching resis- tor at capacitor location for driving transmission line. lvds ac coupling c2, c3 0.1 f ac coupling capacitors dc coupling c2, c3 0 ? install 0603 resistors at cap locations. lvpecl ac coupling c2, c3 0.1 f ac coupling capacitors r2, r3 130?150 ? local bias resistors dc coupling c2, c3 0 ? install 0603 resistors at cap locations.
SI57X-EVB 10 rev. 0.2 oe components (r9 on back) figure 4. SI57X-EVB motherboard default jumper locations
SI57X-EVB rev. 0.2 11 2. clock i/o there are no input clock signals that are routed to and from the dut via the motherboard. the si57x daughterboard output clocks are dire ctly routed from the si57x daughterboard to sma connectors j4 and j5. these connectors are designated clkp and clkn, resp ectively. each of these output clocks needs to be terminated into 50 ? single-ended, 100 ? differential. any ac coupling caps or near end lvpecl bias resistors have to be provided for on the si57x daughterboard. 3. configuring the SI57X-EVB figure 5. typical configuration - + - + +5 v power supply (optional) pc optional voltage source (for si571/599) usb db frequency counter optional oscilloscope or other instrument clkn clkp vc_mod clkn SI57X-EVB mb
SI57X-EVB 12 rev. 0.2 4. software installation the following sections describe how to install and begin usin g the software. there is also a readme.txt file with the installation files and a detailed online help file with the actual installed programs which contain additional information. the latest programmable oscillator soft ware is available online at http://www.silabs.com. 4.1. pc system requirements ? microsoft windows 2000 or windows xp ? usb 2.0 ? 1 mb of free hard drive space ? 1024 x 768 screen resolution or greater (1280 x 1024 recommended) ? microsoft .net framework 1.1 ? evb driver (usbxpress) note: the evb driver is provided with the installation files. 4.2. microsoft .net framework installation the microsoft .net framework is requi red before installing an d running the software. details and installation information about the .net framework are available via a shortcut in the netframework directory or at the following web site: http://www.microsoft.com/dow nloads/details.aspx?familyid=262d25e3-f589-4842-8157- 034d1e7cf3a3&displaylang=en contact your system administrator for more details. 4.3. evb driver (usbxpress ? ) installation 1. connect the usb cable to the pc. 2. the operating system will re cognize the new usb device. 3. the operating system will start the in stall new device driver wizard. sele ct "install from a list or specific location (advanced)" and click next .
SI57X-EVB rev. 0.2 13 figure 6. usbxpress driver installation for windows xp?options 4. select "include this location in the search:" and click browse to select the ?usbxpre ssdriver? directory on the cd-rom drive. click next . figure 7. usbxpress driver installation for windows xp?location
SI57X-EVB 14 rev. 0.2 5. the operating system will install the driver. click finish in the last wizard window. verify the driver is installed by opening the device m anager and expanding the "universal serial bus controllers" section. the usbxpress entry should exist as shown in the figure. this entry appears only when the board is connected to the pc via usb, and powered on. figure 8. usbxpress driver entry in the device manager 4.4. evb software installation the software may be install ed from a cd packaged with th e evb kit. this software may also come via a zip file. the installation is similar regardless of how the software is distributed. to install: 1. navigate to the software directory. 2. double-click on the setup.exe file. 3. follow the steps in the wizard to install the program. note: use the default installation location for best results. 4. after the installation is complete, click on start ? programs ? silicon laboratories ? programmable oscillator software . select one of the programs to control the evb and device. 5. refer to the online help in each program by clicking help ? help in the menu. to uninstall: 1. open add/remove programs in the windows' control panel. 2. select programmable oscillator software in the list. 3. click remove . 4. follow the steps in the wi zard for complete removal.
SI57X-EVB rev. 0.2 15 4.5. evb software description these programs are available by clicking start ? programs ? silicon laboratories ? programmable oscillator software . refer to the online help by clicking help ? help in the menu of each program to get more detailed information on how to use the software. program description programmable oscillator calculator the programmable oscillator ca lculator provides a tuto- rial-like, high-level interface to using the oscillator. after specifying the frequencies and i 2 c address, the software will automatically determine the new configuration and program the device. register programmer the register programmer provides low-level control of the oscillator with individual register and bit access.
SI57X-EVB 16 rev. 0.2 5. schematics dut_vdd r0603 r0603 vdd5v_filt sp0503baht green ub_red ub_red ub_red ub_red ub_red green vdd3p3 vdd3p3 usb_b vbus d- d+ usb_gnd receptacle r0603 r0603 r0603 r0603 r0603 r0603 r0603 vdd5v_filt r0603 vdd3p3 vdd5v_filt d1 d2 dref gnd gref s1 s2 sref gtl2002 /rst/c2ck d+ d- gnd p0.0 p0.1 p0.2/xtal.1 p0.3/xtal.2 p0.4 p0.5 p0.6/cnvstr p0.7/vref p1.0 p1.1 p1.2 p1.3 p1.4 p1.5 p1.6 p1.7 p2.0 p2.1 p2.2 p2.3 p2.4 p2.5 p2.6 p2.7 p3.0/c2d regin vbus vdd c8051f320 htst-105-01-t-dv smt shrouded header r0603 reg out 100 ma aka vbus1 reset circuit connector programming in-circuit mount on back. bidirectional usb i/f level translator i2c level shifter mount these components on back. icp i/f bypass jumpers disable jumper tp32 tp31 tp2 mcu_scl tp33 c2 33uf c1 33uf r12 1k 0 r30 r8 0 r0603 nopop l1 blm31a601s 1 2 j16 12 j2 12 j1 j11 1 10 2 3 4 5 6 7 8 9 j12 10 9 27 28 29 30 31 32 1 2 5 4 3 8 7 6 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 u1 81 7 4 6 5 2 3 u3 oe tp5 tp4 mcu_scl mcu_sel3r3vl mcu_sda mcu_spare4 r5 200k r6 1.69k r19 1k r20 1k r13 1.69k r17 1.69k r18 1.69k mcu_c2ck 57x_sda r7 0 2 3 4 1 j15 vdd5v_usb vdd5v_term d6 oe d1 vdd5_filt d2 mcu_vdd3p3 d4 2r5v d5 1r8v d3 3r3v d7 usb tp22 tp3 tp6 tp8 tp7 j7 mcu_shdnl mcu_spare1 vddmid_meas 12 43 u4 oel 1k r1 1r8vl mcu_rstn 0 r21 1k r10 p_3p0 mcu_sel2r5vl c11 0.1uf sw1 r3 1k 0.1uf c3 22pf c5 2200pf c4 r4 0 c9 0.1uf c10 1uf c17 0.1uf 0 r26 0 r27 0 r28 0 r29 mcu_spare5 mcu_spare3 mcu_spare2 spare3 spare5 spare1 spare4 tp21 tp23 vdd5v_filt usbl vdd5v 2r5vl 3r3vl 0.1uf c6 57x_scl mcu_sda spare2 figure 9. SI57X-EVB motherboard schematic (page 1)
SI57X-EVB rev. 0.2 17 dut_vdd gnd gnd gnd gnd gnd2 gnd1 gnd4 gnd3 vdd5v_filt r0603 r0603 gnd2 gnd1 gnd4 gnd3 dut_vdd vdd5v_filt dut_vdd ltc3025edc bias out shdn adj gnd pad_gnd in iout = 300 ma adj regulator r0603 r0603 r0603 r0603 sma sma sma r0603 r0603 r0603 r0603 r0603 lhs jumper = 2.5v no jumper = 1.8v rhs jumper = 3.3v dut daughter board voltage regulator mcu bypass jumpers vout select dut daughter board i/f connectors mount on back. zener clkp vout = 0.4 * (1+(r2/r1)) clkn components oe active low optional tp35 tp34 tp11 r1a 47.5k r1b 95.3k r1c 44.2k r2 165k r31 4.75k j17 vc j4 j5 j6 1 2 j9 1 2 j10 1 2 j8 1 2 j3 nopop r9 1k nopop r16 1k r15 1k r14 1k 14 6 5 2 7 3 u2 57x_scl 57x_sda oe clkp clkp clkn clkn vc tp27 tp24 tp26 tp17 tp19 tp25 tp15 tp13 z1 1 3 5 7 9 11 13 15 17 19 21 23 25 27 31 33 35 37 39 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 29 j14 1uf c16 vddmid_meas r33 10k spare1 r32 10k mcu_shdnl mcu_shdnl 0.1uf c14 mcu_sel3r3vl mcu_sel2r5vl 0.1uf c15 mcu_sel2r5vl mcu_sel3r3vl oe 57x_scl 57x_sda 1 3 5 7 9 11 13 15 17 19 21 23 25 27 31 33 35 37 39 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 29 j13 spare2 spare3 spare4 spare5 tp12 tp14 tp16 tp18 tp20 tp28 oe 57x_scl 57x_sda figure 10. SI57X-EVB motherboard schematic (page 2)
SI57X-EVB 18 rev. 0.2 dut_vdd r0603 test pad test pad dut_vdd gnd1 gnd2 gnd3 gnd4 test pad test pad clk+ clk- gnd oe vdd scl vc sda 8-pad smd r0603 gnd1 gnd2 gnd3 gnd4 components optional vc filter optional test points tp2 tp3 tp7 j4 nopop c1 .01uf 1 3 5 7 9 11 13 15 17 19 21 23 25 27 31 33 35 37 39 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 29 j2 r2 133 r4 0 23 4 65 78 1 u1 c3 .1uf c2 .1uf j3 nopop c4 .01uf nopop clkn tp1 tp4 1 3 5 7 9 11 13 15 17 19 21 23 25 27 31 33 35 37 39 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 29 j1 outp outn vc outp 57x_sda 57x_scl tp11 tp10 tp9 tp8 tp6 tp5 57x_vc r3 133 spare2 spare1 spare5 spare3 spare4 oe outn oe clkp 57x_scl 57x_sda figure 11. SI57X-EVB daughterboard schematic
SI57X-EVB rev. 0.2 19 6. bill of materials 6.1. SI57X-EVB motherboard 6.2. SI57X-EVB daughterboard item qty reference description part number manufacturer 12 c1,c2 cap,sm,33uf,6.3v,10%,tantalum,3528 ta006tcm336kbr venkel 27 c3,c6,c9,c11,c14, c15,c17 cap,sm,0.1uf,16v,20%,x7r,0603 c0603x7r160-104kne venkel 31 c4 cap,sm,2200pf,16v,10%,x7r,0603 c0603x7r160-222kne venkel 41 c5 cap,sm,22pf,50v,10%,c0g,0603 c0603c0g500-220kne venkel 52 c10,c16 cap,sm,1uf,6.3v,x7r,0603 c0603x7r6r3-105kne venkel 65 d1,d2,d3,d4,d5 led,sm,ln1271,bright red ln1271ral-tr panasonic 72 d6,d7 led,sm,ln1371g,green ln1371g panasonic 88 j1,j2,j3,j7,j8,j9,j10, j11 conn,header,2x1 2340-6111tn or 2380-6121tn 3m 93 j4,j5,j17 connector,sma,ra 142-0701-301 johnson 10 1 j6 conn,header,3x1 2340-6111tn or 2380-6121tn 3m 11 1 j12 conn,sm,2x5 htst-105-01-t-dv samtec 12 2 j13,j14 conn,sm,40pos qse-020-01-l-d-a-gp samtech 13 1 j15 conn,usb,b,recept 897-30-004-90-000000 mill-max 14 1 j16 conn,power,2 position 506-5uld02 mouse r 15 1 l1 ferrite,sm,600 ohm,1500ma blm31p601sgpt murata 16 9 r1,r3,r9,r10,r12, r14,r15,r16,r19, r20 res,sm,1k,1%,0603 cr0603-16w-1001ft venkel 17 1 r1a res,sm,47.5k,1%,0603 cr0603-16w-4752ft venkel 18 1 r1b res,sm,95.3k,1%,0603 cr0603-16w-9532ft venkel 19 1 r1c res,sm,44.2k,1%,0603 cr0603-16w-4422ft venkel 20 1 r2 res,sm,165k,1%,0603 cr0603-16w-1653ft venkel 21 9 r4,r7,r8,r21,r26, r27,r28,r29,r30 res,sm,0,0603 cr0603-16w-000t venkel 22 1 r5 res,sm,200k,1%,0603 cr0603-16w-2003ft venkel 23 4 r6,r13,r17,r18 res,sm,1.69k,1%,0603 cr0603-16w-1691ft venkel 24 1 r31 res,sm,4.75k,1%,0603 cr0603-16w-4751ft venkel 25 2 r32,r33 res,sm,10k,1%,0603 cr0603-16w-1002ft venkel 26 1 sw1 switch,push button, miniature 101-0161 mouser 27 1 u1 ic,sm,mcu,32 pos,qfn c8051f320 silicon laboratories 28 1 u2 ic,sm,linear regulator,6 pos, dfn ltc3025edc linear tech 29 1 u3 ic,sm,bi-directional voltage translator gtl2002d/g-t philips 30 1 u4 ic,sm,diode array, 6 pos,sot143 sp0503baht littlefuse 31 1 z1 diode,sm,zener,3.6v 1sma5914bt3 on_semi item qty reference description part number manufacturer 1 1 c1 cap,sm,0.01uf,16v,10%,x7r,0603 c0603x7r160-103kne venkel 2 2 j1,j2 conn,high speed header,40pos,sm qte-020-01-l-d-a-gp samtech 3 1 r4 res,sm,0,0603 cr0603-16w-000t venkel no load 42 c2,c3 cap,sm,0.1uf,16v,20%,x7r,0603 c0603x7r160-104kne venkel 5 1 c4 cap,sm,0.01uf,16v,10%,x7r,0603 c0603x7r160-103kne venkel 6 2 j3,j4 conn,header,2x1 2340-6111tn or 2380-6121tn 3m 7 2 r2,r3 res,sm,133,1%,0603 cr0603-16w-1330ft venkel 8 1 u1 any-rate i2c programmable xo/vcxo xo = si570, vcxo = si571 silicon laboratories
SI57X-EVB 20 rev. 0.2 7. layout 7.1. SI57X-EVB motherboard figure 12. SI57X-EVB-mb silkscreen side a
SI57X-EVB rev. 0.2 21 figure 13. SI57X-EVB-mb primary side
SI57X-EVB 22 rev. 0.2 figure 14. SI57X-EVB-mb gnd plane 1
SI57X-EVB rev. 0.2 23 figure 15. SI57X-EVB-mb 57x_vdd plane
SI57X-EVB 24 rev. 0.2 figure 16. SI57X-EVB-mb 5/3.3 v plane
SI57X-EVB rev. 0.2 25 figure 17. SI57X-EVB-mb gnd plane 2
SI57X-EVB 26 rev. 0.2 figure 18. SI57X-EVB-mb secondary side
SI57X-EVB rev. 0.2 27 figure 19. SI57X-EVB-mb silkscreen side b
SI57X-EVB 28 rev. 0.2 7.2. SI57X-EVB daughterboard figure 20. SI57X-EVB-db silkscreen side a
SI57X-EVB rev. 0.2 29 figure 21. SI57X-EVB-db primary side
SI57X-EVB 30 rev. 0.2 figure 22. SI57X-EVB-db gnd plane
SI57X-EVB rev. 0.2 31 figure 23. SI57X-EVB-db 57x_vdd plane
SI57X-EVB 32 rev. 0.2 figure 24. SI57X-EVB-db secondary side
SI57X-EVB rev. 0.2 33 figure 25. SI57X-EVB-db silkscreen side b
SI57X-EVB 34 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 publication but is subject to change without notice. silicon laboratories assumes no responsibility for errors and omissions, and disclaims responsib ility 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 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 an d 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 the 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 harmless against all claims and damages.

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