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general description the max6964 evaluation kit (ev kit) is a fully assembledand tested surface-mount, 17-output led driver/gpo controller printed-circuit board (pcb). the circuit uses a max6964 ic in a 24-pin qsop package. the ev kit includes four rgb leds and five white leds that can be controlled simultaneously by the max6964. the ev kit demonstrates the max6964 ic? 8-bit pwm led intensity control, two-phase led blinking, reset, and unique sin- gle-pin, one-of-four i 2 c or 2-wire address features. the max6964 ev kit also demonstrates the blink featureand includes a configurable oscillator circuit. the ev kit can also be reconfigured for evaluating a relay. the max6964 ev kit provides pcb pads for the max6964 2-wire serial-interface signals. a cmaxqusb interface board can be used to enable pc communi- cation through the 2-wire serial interface. windows 98se/2000/xp -compatible gui software is provided to access the max6964 ic. the max6964 ev kit can alsobe interfaced directly to a user-provided 2-wire system. order the MAX6964EVCMAXQUSB+ for a complete pc-based evaluation of the max6964. order the max6964evkit+ if you already have a cmaxqusb interface board or do not require pc-based evaluation of the max6964. features ? proven pcb layout ? evaluates four rgb and five white leds ? independent output control of each led ? demonstrates unique single-pin, one-of-four2-wire addressing ? demonstrates relay driving ? pc interface or user 2-wire system interface ? windows 98se/2000/xp-compatible software ? surface-mount components ? fully assembled and tested evaluate: max6964 max6964 evaluation kit/evaluation system ________________________________________________________________ maxim integrated products 1 19-0521; rev 1; 8/07 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. ordering information windows is a registered trademark of microsoft corp. note: the max6964 ev kit software can be downloaded from www.maxim-ic.com/evkitsoftware. however, the cmaxqusbinterface board is required to interface the ev kit to a computer when using the software. part t em p r a n g e i c pa c k a g e 2 - w ir e ser ia l in t er f a c e t ype max6964evkit + 0c to + 70c 24 qs op u ser sup p l i ed m a x6 9 6 4 evc m a xq u sb + 0c to + 70c 24 qs op c m ax q u s b + denotes lead-free and rohs-compliant. component lists designation qty description c1 1 47?, 10v low-esr poscap (c)sanyo 10tpb47mc c2 1 1? ?0%, 6.3v x5r ceramiccapacitor (0603) avx 06036d105ka or taiyo yuden jmk107bj105ka c3 1 4.7? ?0%, 6.3v x5r ceramiccapacitor (0805) avx 08056d475ka or taiyo yuden jmk212bj175kg designation qty description c4, c6 2 0.1? ?0%, 16v x7r ceramiccapacitors (0603) murata grm188r71c104k c5 1 10? ?0%, 6.3v x5r ceramiccapacitor (0603) tdk c1608x5r0j106m d1?4 4 rgb leds (2.8mm x 3.2mm)sml-lx2832sisugsbc d5?9 5 white leds (plcc-2)optek ovs9wbcr4 j1 1 2 x 10 right-angle femalereceptacle ju1, ju3 2 3-pin headers ju2 1 5-pin header ju4, ju5 2 2-pin headers ju6, ju7 0 not installed, 2-pin headers max6964 ev kit max6964 ev system part qty description max6964evkit+ 1 max6964 evaluation kit cmaxqusb+ 1 2-wire serial-interface board downloaded from: http:///
evaluate: max6964 quick start required equipment 5v, 0.5a-rated dc power supply maxim max6964 ev kit and cmaxqusb interface board windows 98se/2000/xp-compatible pc with a spare usb port usb i/o extension cable, straight-through, male-to- female cable note: in the following sections, software-related items are identified by bolding. text in bold refers to items directly from the ev kit software. text in bold and underlined refers to items from the windows 98se/2000/xp operating system. max6964 software and hardware configuration the max6964 ev kit is fully assembled and tested.follow the steps below to verify board operation. caution: do not turn on the power supply until all connections are completed. 1) visit www.maxim-ic.com/evkitsoftware to download the latest version of the ev kit software,6964rxx.zip. save the ev kit software to a tempo- rary folder and uncompress the zip file. 2) install the ev kit software on your computer by run- ning the install.exe program inside the temporaryfolder. the program files are copied and icons are created in the windows start | programs menu. 3) verify that a shunt is installed on the 3.3v pins of jumper ju1 (vdd select) on the cmaxqusb inter- face board. this process configures the cmaxqusb interface board vdd select supply to 3.3v. 4) verify that a shunt is installed on pins 2-3 of jumper ju1 (cmaxqusb v dd supplies v+) on the max6964 ev kit. 5) verify that a shunt is installed on pins 1-3 of jumper ju2 (0x40 address). 6) verify that a shunt is installed on pins 2-3 of jumper ju3 (osc signal). 7) verify that a shunt is installed on jumpers ju4 and ju5 (3hz blink rate). 8) utilizing short leads, connect the 5v power supply to the ev kit? vled pcb pad. utilizing short leads,connect the power-supply ground to the ev kit? gnd pcb pad near the vled pad. 9) connect the cmaxqusb interface board to the max6964 ev kit? j1 connector. max6964 evaluation kit/evaluation system 2 _______________________________________________________________________________________ component suppliers supplier phone website avx corp. 843-946-0238 www.avxcorp.com fairchildsemiconductor 888-522-5372 www.fairchildsemi.com m ur ata m fg . c o., ltd . 770-436-1300 www.murata.com op te k technol og i es 972-323-2200 www.optekinc.com sanyo electronicdevice 619-661-6835 www.sanyodevice.com taiyo yuden 800-348-2496 www.t-yuden.com tdk 847-803-6100 www.component.tdk.com note: indicate that you are using the max6964 when contacting these component suppliers. component lists (continued) designation qty description r1?5 5 110 ?% resistors (0603) r6, r9, r12, r15 4 68 ?% resistors (0603) r7, r10, r13, r16 4 120 ?% resistors (0603) r8, r11, r14, r17 4 130 ?% resistors (0603) r18, r19 2 165k ?% resistors (0603) r20 1 82.5k ?% resistor (0603) r21 1 10k ?% resistor (0603) sw1 1 spst momentary contact switch u1 1 maxim 17-output led driver/gpomax6964aeg (24-pin qsop) u2, u3 2 tinylogic hs inverter with schmitttrigger input (sc70-5) fairchild nc7s14p5x 5 shunts (ju1?u5) 1 pcb: max6964 evaluation kit+ max6964 ev kit files file description install.exe installs the ev kit files onyour computer max6964.exe application program ftd2xx.inf usb device driver file uninst.ini u ni nstal l s the e v ki t softw ar e troubleshooting_usb.pdf usb driver installation help file downloaded from: http:///
10 set both cmaxqusb interface board sw1 switches to the on position. these components provide pullupresistors for the sda and scl 2-wire bus signals. 11) turn on the 5v power supply. the cmaxqusb interface board is powered through the computer?usb port. 12) connect the included usb cable from the pc to the cmaxqusb interface board. a building driver database window pops up in addition to a new hardware found message. if you do not see any window that is similar to the one described aboveafter 30 seconds, remove the usb cable from the cmaxqusb interface board and reconnect it again. administrator privileges are required to install the usb device driver on windows 2000/xp. 13) follow the directions of the add new hardware wizard to install the usb device driver. choose the search for the best driver for your device option. specify the location of the device driver asc:\program files\max6964 by using the browse button. refer to the troubleshooting usb.pdfdocument included with the software for more information. 14) start the max6964 program by opening its icon in the start|programs menu. 15) the software detects the cmaxqusb interface board and the max6964 ic 2-wire address, thenupdates the screen. the ev kit and software are then ready for further evaluation. see the detailed software description section in this document for more information on the softwaregui features. detailed hardware description the max6964 ev kit demonstrates the max6964 17-out-put led driver/gpo controller? features. the ev kit? cir- cuit uses a max6964 ic in a 24-pin qsop package on a proven pcb layout design. the ev kit features four rgb leds, five white leds, a relay interface (ju7) and a con- figurable blink oscillator. the leds can be controlled independently and their intensity varied using the appro- priate max6964 8-bit pwm control register. the max6964 ic? two-phase feature and unique single-pin, one-of-four 2-wire address feature can also be evaluated with the ev kit. the max6964 ic requires 3.3v for opera- tion and is powered by the ev kit circuit? v+ rail. the max6964 ic? blink feature is demonstrated by using a configurable oscillator circuit. the oscillator circuit comprises two logic inverters (u2 and u3), a capacitor (c5), and resistors (r18, r19, and r20). byconfiguring jumpers ju4 and ju5, 0.7hz to 3.0hz blink frequencies can be evaluated. pcb pads are also provided for connecting an external square- wave oscillator to the blink_in pads. jumper ju6 can be used to disable and power down both inverters, u2 and u3, hence disabling the oscillator. the ev kit circuit can also be reconfigured for evaluat- ing a 5v-rated relay by using jumper ju7 pads. white led d5 and resistor r5 must be removed and a short placed across resistor r5 pads. the max6964 can sink up to 50ma on the output. the max6964 ev kit provides scl and sda pcb pads for the 2-wire serial-interface signals. these pads can be connected directly to a user-provided 2-wire system that has pullup resistors for the scl and sda signals. alternatively, the ev kit can be used with a cmaxqusb interface board for communicating with a pc through the 2-wire serial interface. jumper ju2 is used to confi- gure the max6964 ic? 2-wire address and demonstrates the ic? unique single-pin, one-of-four 2-wire address fea- ture using the scl or sda signals for addressing. a pcb pad is also provided for the max6964 ic pin, ad0. see table 2 for additional information. jumper and switch functions several jumper selections and a reset switch functionprovided by the max6964 ev kit are presented in the following tables. ev kit circuit v+ source the max6964 ev kit features a jumper, ju1, to select thesource for the v+ rails of the ev kit circuit. the circuit? v+ rail is typically supplied 3.3v by a cmaxqusb inter- face board. alternatively, the ev kit? vin pcb pad can be used to supply 3.3v to the circuit? v+ rail. the cmaxqusb interface board is powered through a pc? usb cable. table 1 lists the various jumper options for powering the circuit? v+ rail. evaluate: max6964 max6964 evaluation kit/evaluation system _______________________________________________________________________________________ 3 table 1. v+ source (3.3v), ju1 configuration shunt position v+ pin ev kit 3.3v supply source 1-2 connected to vinpcb pad vin pcb pad 2-3 connected to vddpcb pad cmaxqusb interfaceboard or external supply* * this configuration also allows the user to use an external sup- ply for the vdd source to power the v+ pin of the max6964 ic. downloaded from: http:///
evaluate: max6964 max6964 2-wire serial address the max6964 ev kit features a jumper, ju2, forconfiguring the max6964 2-wire serial address. the scl, sda, and ad0 pcb pads are provided for interfacing to the 2-wire serial address bus and configuring the address, respectively. table 2 lists the various jumper options for configuring the 2-wire address. blink signal source the max6964 ev kit features a jumper to select themax6964 ic blink pin source, either the ev kit? oscil- lator (u2 and u3) or a user-provided cmos square- wave signal. the square-wave signal is applied to the ev kit? blink_in pcb pads. table 3 lists the various jumper options for the signal source. oscillator frequency selection and enable the max6964 ev kit features jumpers ju4 and ju5 toset the ev kit? oscillator frequency. the oscillator frequency ranges from 0.7hz to 3.0hz. additionally, jumper ju6 is provided to disable the ev kit? oscillator. table 4 lists the various frequency selection options for jumper ju4. table 5 lists jumper ju6 enable/disable options for inverters u2 and u3. reset control methods the max6964 ev kit features a switch to reset the max6964ic. additionally, the ev kit provides a rst pcb pad for using an external controller to reset the max6964 ic. referto the max6964 ic data sheet for additional functions of the max6964 rst pin. table 6 lists the various switch and alter- nate reset options for resetting the max6964 ic. max6964 evaluation kit/evaluation system 4 _______________________________________________________________________________________ table 2. 2-wire serial address, ju2 configuration u1 address shunt position ad0 pin ev kit operation 0x40 1-3 connected to gnd max6964 2-wire address = 0x40 0x48 1-2 connected to v+ max6964 2-wire address = 0x48 0xc0 1-4 connected to scl max6964 2-wire address = 0xc0 0xc8 1-5 connected to sda max6964 2-wire address = 0xc8 0x40, 0x48, 0xc0, 0xc8 open* connected to ad0 pcb pad m ax 6964 2- w i r e ad d r ess set exter nal l y b y user i nter face * when using an external 2-wire serial interface, the shunt on jumper ju2 must be removed so the external 2-wire serial interface has control of the max6964 ad0 pin. * see table 4 for configuring the oscillator frequency. table 3. blink source, ju3 configuration shunt position blink pin max6964 blink source 1-2 connected to blink_in pcb pad external cmos square-wave oscillator 2-3* connected to osc ev kit oscillator table 6. reset switch and control option, sw1 functions switch state rst pin connection max6964 operation rst pin pulled high by r21 max6964 operating pressed rst pin pulled low by sw1 resetting max6964 rst pin pulled high by r21 max6964 operating rst pin pulled low by external controller external controller resets max6964 table 4. oscillator frequency, ju4, ju5configuration shunt position ju4 ju5 oscillator frequency (hz) open open 0.7 installed open 1.5 open installed 2.2 installed installed 3.0 table 5. oscillator enable,ju6 configuration pc trace short u2/u3 pin 5 oscillator operation installed* connected to v+ enabled cut open open disabled, not powered * default configuration. downloaded from: http:///
detailed software description note: words in boldface are user-selectable features in the max6964 ev kit software. a mouse or thekeyboard? tab key is used to navigate various items on the main window. the max6964 ev kit software features window tabs to select the global and white led config/status or rgb led config/status window. a few more available software features can be evaluated by using the pull-down menu. the software has a demo mode that is available using the view | demo mode pulldown menu. when in demo mode, all software communication to theev kit hardware is disabled and most of the software? gui is functional. this feature enables a user to evaluate the software without hardware connectivity. the max6964 ev kit software configures the cmaxqusb interface board? 2-wire communication speed to 400khz by default. the speed can be reduced to 100khz, if required, by selecting the pulldown menu? view | 2-wire speed | 100khz selection. this configuration may be required if slower 2-wire devices are connected to the ev kit? scl and sda pads.the left bottom status bar of the main window provides the cmaxqusb interface board communication status. the right bottom status bar provides the current program status and 2-wire communication status with respect to the max6964 ic. software startup upon starting the program, the max6964 ev kit softwareautomatically detects the u1 serial address, configures the max6964 ic, and starts up with the global and white led config/status window selected (see figure 1). use the global configuration/status section? check- boxes to enable/disable various max6964 globalfunctions. the master intensity control track bar affects all rgb leds or outputs simultaneously. deselecting acheckbox disables the respective function. selecting the static outputs checkbox sets the master intensity control track bar to 0/15 . deselect the static outputs checkbox to enable the track bar? full range of 1/15 to 15/15 . evaluate: max6964 max6964 evaluation kit/evaluation system _______________________________________________________________________________________ 5 figure 1. the max6964 evaluation kit software global and white led config/status main window for global configuration, whiteled and flash controls, and software status downloaded from: http:///
evaluate: max6964 changes to ram0 and ram1 are entered in hexadecimalformat (0x_ _) in the respective combo box. select the respective update ram0 or update ram1 button to write the respective combo box entered values to themax6964 ic. the max6964 2-wire serial address is pro- vided in hexadecimal and decimal format, respectively. the white led/flash configuration section is utilized to enable/disable the ev kit? white leds d5?9 or tocontrol all five white leds as a single flash unit. flash features such as single flash , repeat flash , and time delays from 0.5s to 8s duration can be selected or con- figured, respectively. select the enable flash timer checkbox, then select a flash time using the timer combo box and press the run flash button. when running the flash, all global blink checkboxes areunchecked and all white led checkboxes are disabled. uncheck the enable flash timer checkbox to enable all of the white led checkboxes. warning: do not conti- nuously stare at white leds d5, d6, d7, d8, or d9. rgb led config/status the rgb led config/status window (see figure 2) provides full control of the ev kit? rgb leds, d1?4.select the respective d_ phase 0 enable checkbox to enable or disable the respective rgb led. select the phase 0 red , green , or blue checkboxes to enable the respective led color during phase 0. when enable pwm is selected, the rgb led? track bar indepen- dently controls the respective led? color intensity.when disabled, the track bars are set to full scale, reflecting the respective max6964 ic intensity register. select the phase 1 red , green , or blue boxes to enable the respective led for demonstrating the phase1 max6964 blinking mode of operation. the global blink enable must be selected on the global and white led config/status tab window for the blink function to work. max6964 evaluation kit/evaluation system 6 _______________________________________________________________________________________ figure 2. the max6964 evaluation kit software rgb led config/status window for configuring the rgb leds, d1?4 downloaded from: http:///
general-purpose 2-wire interface utility the general-purpose 2-wire interface utility can also be used to communicate with the max6964, and thus,control or read back signals from the max6964. use the view | interface pulldown menu to access the utility. the utility configures the 2-wire serial-interface para-meters, such as start and stop bits, acknowledge- ments, and clock timing. the 2-wire interface screen allows you to send general-purpose 2-wire commands using the smbuswritebyte and smbusreadbyte . the interface utility only accepts and outputs hexadecimalnumber format. the hunt for active listeners button scans the entire 2-wire address space, reporting each address that isacknowledged. the smbuswritebyte transmits the device address, command, and one byte of data. thesmbusreadbyte transmits the device address, a command, and then retransmits the device addressand reads one byte of data. for information on the differences between a 2-wire and an smbus interface, read application note 476: comparing the i 2 c bus to the smbus at www.maxim-ic.com. general troubleshooting problem: software reports it cannot find the inter-face board. is the interface board power led lit? is the usb communications cable connected? has windows plug-and-play detected the board? bring up control panel | system | device manager , and look at what device nodes are indicated forusb. if there is an unknown device node attached to the usb, delete it. this process forces plug-and- play to try again. problem: unable to find u1. is power applied to the max6964 ev kit vin pcb pad or is jumper ju1 configured to pins 2 and 3 toreceive power from the cmaxqusb interface board? this is required for powering u1. are the scl and sda signals pulled up to vdd? the cmaxqusb interface board dipswitch sw1enables the on-board resistors on the interface board. there must be pullup resistors somewhere for the 2-wire scl and sda signals. if using jumper wires to connect, are the scl and sda signals swapped? is the ground return missing? evaluate: max6964 max6964 evaluation kit/evaluation system _______________________________________________________________________________________ 7 figure 3. the 2-wire interface window provides direct, low-level access to the max6964 and 2-wire serial interface smbus is a trademark of intel corp. downloaded from: http:///
evaluate: max6964 max6964 evaluation kit/evaluation system 8 _______________________________________________________________________________________ max6964 u1 blink_in scl blinkscl sda osc ju3 v+ 12 3 ju1 v+ female connector 2 x 10 j1 j1-1 vdd j1-3 sda j1-5 j1-7 scl j1-9 j1-11 j1-13 j1-15 j1-17 j1-19 j1-2 j1-4 j1-6 j1-8 j1-10 j1-12 j1-14 j1-16 j1-18 j1-20 12 2122 3 blink ad0 scl ju2 1 34 2 3 4 5 v+ vled v+ vled vledgnd vin vdd gnd vled d1 2 r gb 3 14 2 sda scl sda gnd sw1 r21 10k r17 130 5 r16 120 r13 120 r12 68 r14 130 6 12 98 7 r15 68 c4 0.1 f 23 v+ad0 o0 o1 o2 o3 o4 o5 gnd 24 sda vdd osc c21 f 6.3v c147 f 10v c5 10 f 2 a u2 y vcc gnd n.c. 5 41 3 c60.1 f c3 4.7 f 6.3v ju7 ju5 r20 82.5k 1% ju4 ju6 short (pc trace) r19 165k 1% r18 165k 1% rst rst d2 4 r bg 1 32 r10 120 r9 68 r11 130 1311 10 o6 o7 o8 d3 4 r bg 1 32 r7 120 r6 68 r8 130 1615 14 o9 o10 o11 r5 110 17 18 o12 d4 4 r bg 1 32 12 d5 r4 110 o13 d6 19 r3 110 o14 d7 20 r2 110 o15 d8 1 r1 110 o16 d9 2 a u3 y vcc gnd n.c. 5 41 3 figure 4. max6964 ev kit schematic downloaded from: http:///
evaluate: max6964 max6964 evaluation kit/evaluation system _______________________________________________________________________________________ 9 figure 5. max6964 ev kit component placement guide?omponent side downloaded from: http:///
evaluate: max6964 max6964 evaluation kit/evaluation system 10 ______________________________________________________________________________________ figure 6. max6964 ev kit pcb layout?omponent side downloaded from: http:///
maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 11 2007 maxim integrated products is a registered trademark of maxim integrated products, inc. evaluate: max6964 max6964 evaluation kit/evaluation system figure 7. max6964 ev kit pcb layout?older side revision history pages changed at rev 1: 1?, 7, 8, 10, 11 downloaded from: http:///

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