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part qty description max5954levkit 1 max5954l evaluation kit cmaxqusb 1 smbus interface board part* ic package smbus interface type max5954levkit 36 tqfn-ep** not included MAX5954LEVCMAXQUSB 36 tqfn-ep** cmaxqusb component list MAX5954LEVCMAXQUSB (max5954l ev system) ordering information note: the max5954l ev kit software is provided with the max5954levkit. however, the cmaxqusb interface board isrequired to interface the ev kit to a computer when using the software. * temp range is 0? to +70? for all parts. ** ep = exposed paddle. evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system ________________________________________________________________ maxim integrated products 1 19-3907; rev 0; 11/05 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. general description the max5954l evaluation kit (ev kit) is a fully assem-bled and tested surface-mount single hot-plug con- troller pc board for a single pci express hot-plug slot. the circuit uses a max5954l ic in a 36-pin thin qfn package. the ev kit provides independent power control for the 12v, 3.3v, and 3.3v-auxiliary outputs of a single pci-express x16 connector. the ev kit demon- strates the max5954l ic? inrush current control, output overcurrent/short-circuit protection and input undervoltage monitoring features. the max5954l ic controls two separate external n-channel mosfets for the 12v and 3.3v outputs, respectively. additionally, the max5954l has an inter- nal mosfet that controls the 3.3v-auxiliary output. switches are provided to independently enable/disable the 12v/3.3v main and 3.3v-auxiliary supplies. the max5954l ev kit can be reconfigured for evaluat- ing a x1, x4, or x8 pci express single hot-plug design. alternatively, the ev kit can also be used to demon- strate the max5954l hot-plug features without using the pci express x16 connector. the ev kit includes a max7313 i/o expander that enables communication through an smbus interface for the max5954l signals and some of the pci express signals. a cmaxqusb interface board can be used to enable pc communication through the smbus inter- face. windows?98-/2000-/xp-compatible gui software is provided to access the max7313 i/o expander and max5954l signals. the max5954l ev kit can also be used in local control, without any software, or interfaced to a user-provided smbus system signal. order the MAX5954LEVCMAXQUSB for a complete pc- based evaluation of the max5954l. order the max5954levkit if you already have a cmaxqusb interface board or do not require pc-based evaluation of the max5954l. features ? demonstrate pci express x16 single hot-plugdesign ? independent output controls 12v and up to 5.5a (adjustable)3.3v and up to 3a (adjustable) 3.3v-aux and up to 0.375a ? evaluate hot-plugging pci express x1, x4, x8, orx16 line cards ? demonstrate input inrush current control ? demonstrate output overcurrent/short-circuitprotection ? monitor input undervoltage for 12v, 3.3v, and3.3v-aux with status reports ? configurable power-on reset (por) ? independent on/off controls for 12v/3.3v ? independent 3.3v-aux output with separateon/off control ? latched output after fault conditions (12v, 3.3v,3.3v-aux) ? input/output interface using a max7313 i/oexpander (smbus interface) or local control ? can be controlled locally without software ? windows 98-/2000-/xp-compatible software ? surface-mount components ? fully assembled and tested pci express is a trademark of pci-sig corp.smbus is a trademark of intel corp. windows is a registered trademark of microsoft corp. downloaded from: http:///
evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system 2 _______________________________________________________________________________________ designation qty description c1 1 1500?, 16v electrolytic capacitor(12.5mm x 13.5mm case) panasonic eevfk1c152q c2 1 3300?, 6.3v, low-impedanceelectrolytic capacitor (12.5mm x 13.5mm case) sanyo 6.3cv3300kx c3, c4, c5 3 10? ?0%, 25v x7r ceramiccapacitors (1812) tdk 4532x7r1e106m c6?9 4 1? ?0%, 16v x7r ceramiccapacitors (0805) murata grm21br71c105k c11, c12 2 0.1? ?0%, 16v x7r ceramiccapacitors (0603) murata grm188r71c104k c13, c14 0 not installed ceramic capacitors(0805) d1 1 1a, 40v schottky diode (sod-123)diodes incorporated 1n5819hw-f d2, d3, d5, d6 4 green surface-mount leds (1206) d4 1 yellow surface-mount led (1206) j1 1 pci express x16 connectormolex 87715-3305 j2 1 9-pin header j4 1 2 x 10 right-angle female receptacle ju1, ju2 2 2-pin headers ju3, ju4 2 3-pin headers n1, n2 2 20v, 13.4a n-channel mosfets(so-8) vishay si7448dp-t1 r1 1 0.008 ? ?%, 0.5w sense resistor (2010)irc lrc-lrf2010-01-r008-g or vishay wsl20108l000f designation qty description r2 1 750 ? ?% resistor (1210) r3 1 1k ? ?% resistor (1206) r4, r10, r11, r12, r17, r20, r21, r22 0 not installed resistors (0805) r5, r8, r18, r19, r23, r24, r25 7 10k ? ?% resistors (0603) r6, r7 2 51k ? ?% resistors (0603) r9 1 3.3k ? ?% resistor (0603) r13, r14, r16, r28 4 150 ? ?% resistors (0603) r15 1 0.005 ? ?%, 0.5w sense resistor (2010)vishay wsl20105l000fta sw1 1 spst momentary-contact switch sw2, sw3 2 spdt slide switches vin1, vin2, vin3, gnd, gnd 5 uninsulated banana jacks tp1, tp2, tp3, tp13, tp15,tp16, tp18, tp19, tp20 9 pc test points, red tp4?p12 9 pc test points, black tp14, tp17 2 pc test points, miniature, red u1 1 max5954letx (6mm x 6mm, 36-pintqfn) u2 1 16-port i/o expander (4mm x 4mm,24-pin tqfn) max7313atg 4 shunts (ju1?u4) 1 max5954l ev kit pc board 2 rubber bumpers max5954levkit component list downloaded from: http:///
quick start required equipment one each of the following dc power supplies 12v, 7a3.3v, 5a three voltmeters the 3.3v power supply can be used to power the main 3.3v and 3.3vaux inputs. the max5954l ev kit is fully assembled and tested. follow these steps to verify board operation. do not turn on the power supply until all connections arecompleted. note: the banana leads connecting the 12v and 3.3v power supply to the ev kit must be short (< 12in long). max5954l hardware-only configuration 1) verify that a shunt is installed on jumper ju1 ( pres-det ). 2) verify that a shunt is not installed on jumper ju2 (mrl). 3) verify that shunts are installed on pins 1 and 2 of jumpers ju3 and ju4 (local switch control). 4) utilizing short 10a-rated banana leads (< 12inlong) , connect the 12v dc power supply to the vin1 banana jack. utilizing short 10a-rated banana leads (< 12in long) , connect the supply ground to the gnd banana jack. 5) utilizing short 10a-rated banana leads (< 12inlong) , connect the 3.3v dc power supply to the vin2 banana jack. utilizing short 10a-rated banana leads (< 12in long) , connect the supply ground to the gnd banana jack. 6) connect the 3.3v dc power supply to the vin3 banana jack with a short banana lead. 7) connect a voltmeter to the 12v pad or test point tp13 and gnd. connect a voltmeter to the 3.3vpad or test point tp16 and gnd. connect a volt- meter to the 3.3vaux pad or test point tp19 and gnd. 8) set switches sw3 (on) and sw2 (auxon) to the off position. 9) turn on both power supplies in any sequence. 10) set switches sw3 (on) and sw2 (auxon) to the on position. 11) verify that the voltage at the following pads is as shown below: 12v = 12v3.3v = 3.3v 3.3vaux = 3.3v 12) sliding switches sw3 and sw2 to the off position disables the respective output on the max5954lev kit single hot-plug controller main or auxiliary outputs. 13) test points tp14, tp17, and gnd pads nearby are provided to observe mosfets n1 or n2 gate volt-age, respectively, with an oscilloscope. software and hardware quick start the max5954l ev kit is fully assembled and tested.follow these steps to verify board operation. do not turn on the power supplies until all connections arecompleted. required equipment: one each of the following dc power supplies 12v, 7a3.3v, 5a (used to power the main 3.3v and 3.3vaux inputs) max5954l ev kit and cmaxqusb interface board windows 98/2000/xp computer with a spare usb port usb i/o extension cable, straight-through, male-to- female cable three voltmeters for confirming output voltages evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system _______________________________________________________________________________________ 3 supplier phone website diodesincorporated 805-446-4800 www.diodes.com irc 361-992-7900 www.irctt.com murata 770-436-1300 www.murata.com panasonic 714-373-7366 www.panasonic.com sanyoelectronic device 619-661-6835 www.sanyodevice.com tdk 847-803-6100 www.component.tdk.com vishay www.vishay.com component suppliers note: indicate that you are using the max5954l when contact- ing these component suppliers. downloaded from: http:///
evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system 4 _______________________________________________________________________________________ max5954l software and hardware configuration 1) verify that a shunt is not installed on jumper ju1 ( pres-det ) and a shunt is installed on jumper ju2 (mrl). 2) verify that shunts are installed on pins 2 and 3 of jumpers ju3 and ju4 (computer control) on the ev kit. 3) utilizing short 10a-rated banana leads (< 12inlong) , connect the 12v dc power supply to the vin1 banana jack. utilizing short 10a-rated banana leads (< 12in long) , connect the supply ground to the gnd banana jack. 4) utilizing short 10a-rated banana leads (< 12inlong) , connect the 3.3v dc power supply to the vin2 banana jack. utilizing short 10a-rated banana leads (< 12in long) , connect the supply ground to the gnd banana jack. 5) connect the 3.3v dc power supply to the vin3 banana jack with a short banana lead. 6) connect a voltmeter to the 12v pad or test point tp13 and gnd. connect a voltmeter to the 3.3vpad or test point tp16 and gnd. connect a volt- meter to the 3.3vaux pad or test point tp19 and gnd. 7) connect the cmaxqusb interface board to the max5954l ev kit? j4 connector. 8) set both cmaxqusb interface board sw1 switches to enable. these provide pullup resistors for thesda and scl 2-wire bus signals. 9) install the max5954l evaluation software on your computer by running the install.exe program onthe cd-rom disk. the program files are copied and icons are created for them in the windows start menu. restart the computer when prompted. for windows 2000 and xp, you may need administrator privileges. 10) turn on the 12v and 3.3v power supplies for the ev kit. the cmaxqusb interface board is poweredthrough the computer? usb port. 11) connect the included usb cable from the pc to the cmaxqusb interface board. a building driver database window should pop up in addition to a new hardware found message. if you do not see any window that is similar to the one describedabove after 30s, try removing 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 and xp. 12) 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\max5954l using the browse but- ton. refer to the document troubleshooting usb.pdf included with the software for more information. 13) start the max5954l program by opening its icon in the start menu. 14) install the shunt on jumper ju1 ( pres-det ) or insert a pci express card into connector j1. 15) the software detects the cmaxqusb interface board, the smbus address of u2, and updates thestatus screen. the software is then ready for changes in the command section. see the max7313 input/output expander and smbus interface section for configuring the input/output expander, using the cmaxqusb interface board. seethe detailed description of software in this document for more information on the software gui features. detailed description of hardware the max5954l ev kit demonstrates a pci express x16single hot-plug circuit design. a pci express x16 single channel is provided to evaluate a pci express x16 line card. the ev kit uses a latching max5954l hot-plug controller in a 36-pin tqfn package to control the out- put power and monitor for faults. the max5954l ic controls output power independently and external n-channel mosfets are used to control power to the 12v and 3.3v outputs. current-sensing resistors (r1, r15) are used for monitoring current at the 12v and 3.3v outputs. an internal mosfet on the max5954l controls the 3.3v-auxiliary output. if an overcurrent fault persists, the max5954l shuts down the channel. the fault is reported at the open- drain power-good pin ( pwrgd ) and fault pin ( fault ). the max5954l power-on reset (por) is configured fora default value of 160ms; however, the por can be reconfigured by installing resistor r11. slide switches are provided to enable/disable the main output (sw3) and auxiliary (sw2) 3.3v output indepen- dently when the smbus control is not used. jumper ju1 can be used to provide a presence-detect function if a pci express card is not used. momentary pushbut- ton switch sw1 is provided to demonstrate the max5954l debounced logic gate input and output signals. downloaded from: http:///
evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system _______________________________________________________________________________________ 5 the max5954l ev kit features green leds connectedto the 12v, 3.3v, and 3.3v-auxiliary outputs that indi- cate if the respective output is currently powered. red test points for the 12v and 3.3v outputs, various pci express signals, and other circuit signals (such as the gate drive of each mosfet) have been provided for probing on the ev kit board. all of the ev kit? black test points are gnd points. the ev kit also features pc board pads for installing external resistors and capacitors near each mosfet gate terminal to slow the mosfets gate-turn-on time. surface-mount 0805 case size components can be installed at these locations. see figure 3 for each of the mosfets?gate reference designators. when adding capacitance to the gates of n1 and n2, ensure that adequate startup time (t su ) is allowed. to successfully power up, the 5? gate-charge currentmust be able to bring the gate voltages of n1 and n2 above their maximum pwrgd thresholds before t su has elapsed. the maximum pwrgd threshold for 12v mosfet n1 is 4.8v above v 12vin , and the threshold for 3.3v mosfet n2 is 4.5v above v 3.3vin . the time required to reach these thresholds isthe ev kit can be reconfigured for evaluating a x1, x4, or x8 pci express single hot-plug design by replacing current-sense resistor r1. consult the appropriate pci express specification or table 1 in the max5954l ic data sheet for selecting other designs. pc board pads are provided to demonstrate the max5954l hot-plug features without using the pci express x16 connector. for evaluating external dc loads, the cables connect- ing the 12v and 3.3v outputs to the external dc load must be rated for at least 10a and be shorter than 12in. additionally, current-sense resistors r1 and r15 are configured for the maximum allowable output current on the 12v and 3.3v outputs. these resistors should be reconfigured only for lower output currents. the max5954l ev kit features a max7313 16-port i/o expander (u2) and pc board pads for interfacing to a user? smbus system. resistors r20?25 configure the max7313 smbus serial address. the max7313 can be used to enable/disable the ev kit? main outputs and auxiliary 3.3v output independently. see the max7313 input/output expander and smbus interface section for more details. jumper and switch selection several jumper and switch selections in the followingtables display the functions provided by the max5954l ev kit. presence detect the max5954l ev kit features a jumper that can simu-late a pci express x16 card being plugged into con- nector j1. jumper ju1 is used to provide a presence- detect function for the channel. an external load (resis- tive and capacitive) must be connected to the chan- nel? output pc board pads to simulate a real pci express card. table 1 lists the various jumper options. channel enable/disable switches the max5954l ev kit features two switches toenable/disable the 12v/3.3v main and 3.3v-auxiliary outputs. the switches can also be used to reset the channel when it has latched off after a fault has occurred. table 2 lists the various switch options. total gate capaci ce pwrgd threshold voltage a tan 5 table 1. channel presence-detectfunctions jumper shunt max5954l pin connection ev kit operation simulated ju1 installed pres-det pin pulled low pci express cardinserted in channel ju1 none* pres-det pin pulled high no pci express cardin channel * when using a real pci express card, this jumper? shunt must be removed so that the card has control of the presencedetection. table 2. channel switch functions switch switch state max5954l pin connection max5954l operation sw3 on on pin pulledhigh enable mainoutputs sw3 off on pin pulled low disable mainoutputs sw2 on auxon pin pulledhigh enable 3.3v-auxiliary output sw2 off auxon pin pulledlow disable 3.3v-auxiliary output * when using a real pci express card, this jumper? shunt must be removed so that the card has control of the presencedetection. downloaded from: http:///
evaluate: max5954l/max5954a control methods, other configurations, and i/o expander fault resetting the max5954l ev kit features two slide switches toreset a latched fault at the channel. the respective switch resets the max5954l and unlatches faults when toggled from on to off. see table 2 for resetting the channel. refer to the max5954l data sheet for addi- tional functions of the max5954l on pin. fault timeout and por periods the max5954l fault timeout period is configured for adefault value of 10ms and can be reconfigured to a new timeout period by installing surface-mount resistor r10. the max5954l por timeout period is configured for a default value of 160ms, however a new por time- out period can be reconfigured by installing surface- mount resistor r11. refer to the max5954l data sheet applications information section for selecting the val- ues of resistors r10 or r11.when adjusting the t fault timeout, be sure to allow adequate startup time, t su . the minimum required startup time for a given output is the greater of eitheras described in the detailed description of hardware section. refer to the max5954 data sheet for moreinformation on selecting r tim and r poradj . forced on inputs the pci express slot can be forced to turn on regard-less of the max5954l logic status inputs. to force the channel on, install surface-mount resistor r12. a typical value is less than 1k ? . current limiting the max5954l ev kit can evaluate other current-limitconfigurations for the 12v and 3.3v main outputs. resistor r1 sets the 12v current limit and r15 sets the 3.3v current limit. the 3.3v-auxiliary current limit is fixed at 470ma (typ) and is not reconfigurable. refer to the max5954l ic data sheet for information on select- ing other current-limit resistors. evaluating other max5954l hot-plug controllers the max5954l ev kit can be used to evaluate themax5954a. replace u1 with the max5954a that can be ordered by contacting the factory. max7313 input/output expander and smbus interface the max5954l ev kit features a max7313 i/oexpander (u2) and pc board pads for connecting to an smbus system (sda and scl signals). the i/o expander interfaces with the pres-det , fault , on, and out signals of the max5954l. a 9-pin header, j2,is provided to enable easy access to each signal through a ribbon cable or scope probe. green and yel- low leds (d3, d4) are also provided for user applica- tions such as status indication. jumper ju2 (mrl) is provided to mimic a pci express mechanical retention locking (mrl) signal. surface-mount resistors r20?25 configure the max7313 smbus address, which is set to 0x40 by default. if the max7313 i/o expander is used to control the max5954l on/auxon signals and read back the vari- ous other signals, jumpers ju3 and ju4 must be reconfigured or u2 may be destroyed when switching logic states. see table 3 below for configuring jumpers ju3 and ju4. pads are provided on the ev kit? pc board for interfacing with a user? system smbus vdd, sda, scl, and gnd signals if the cmaxqusb inter- face board is not used. if a user? smbus system is not available, a windows- based computer can be interfaced with the ev kit by connecting the cmaxqusb interface board to connec- tor j4. the cmaxqusb interface board enables the computer to interface with the ev kit? smbus signals. the interface board and gui software provides the user with the capability of controlling and monitoring the max5954l ic using the max7313 i/o expander. pwrgd threshold voltage input voltage output load capaci ce a or total gate capaci ce pwrgd thresholdvoltage a + tan tan 5 5 max5954l evaluation kit/evaluation system 6 _______________________________________________________________________________________ table 3. max5954l channel on signalsconfiguration jumper shunt location max5954l pin connection ev kit operation ju4 1 and 2 on controlled bysw3 local switchcontrol ju3 1 and 2 auxoncontrolled by sw4 local switchcontrol ju4 2 and 3 on controlled byu2, max7313 with smbus smbus orcomputer control ju3 2 and 3 auxoncontrolled by u2, max7313 with smbus smbus orcomputer control downloaded from: http:///
detailed description of software words in boldface are user-selectable features in themax5954l ev kit software. a mouse or the keyboard? tab key is used to navigate various items on the main window. most of the main window? available functions and a few more can be evaluated by using the pulldown menu . the software features a demo mode that is available using the view|demo mode pulldown menu. software startup upon starting the program, the max5954l ev kit soft-ware automatically detects u2 address and configures its i/o. see table 4 for u2? configuration by the soft-ware. the max5954l ev kit? various status signals are then updated by the program approximately every 500ms. use the checkboxes to enable/disable various ev kit functions and then select the execute command button to send the commands to u2 and/or u1. deselecting a checkbox disables the command.the software? status area provides information on the various max5954l and pci express system signals condition. the max7313 u2 smbus address is provid- ed in hexadecimal and decimal format, respectively. the left bottom status bar of the main window provides the cmaxqusb interface board communication status. the right bottom status bar provides the current pro- evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system _______________________________________________________________________________________ 7 figure 1. max5954l evaluation software main window for reading current ev kit status and sending commands table 4. max7313 i/o port configuration/function max7313 port i/o port p7 (bit d7) port p6 (bit d6) port p5 (bit d5) port p4 (bit d4) port p3 (bit d3) port p2 (bit d2) port p1 (bit d1) port p0 (bit d0) port config output output input input output output input input ev kitfunction yellow led (d4) green led (d3) pres-det fault auxon on out mrl downloaded from: http:///
evaluate: max5954l/max5954a gram status and smbus communication status withrespect to u2. the max5954l ev kit software configures the cmaxqusb interface board? smbus communication speed to 400khz by default. the speed can be reduced to 100khz if required, by selecting the pull- down menu? view|2-wire speed|100khz selection. this may be required if slower smbus or 2-wire devicesare connected to the bus on the ev kit. general-purpose 2-wire interface utility the general-purpose 2-wire interface utility can also beused to communicate with the max7313 and control or read back signals from the max7313 and/or max5954l. use the view|interface pulldown menu to access the utility. the utility configures the smbus interface para-meters such as start and stop bits, acknowledgements, and clock timing. the 2-wire interface screen allows the user to send general-purpose smbus commands using the smbuswritebyte and smbusreadbyte . the inter- face utility only accepts and outputs hexadecimal num-ber 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 com- mand, and then retransmits the device address andreads 1 byte of data. for information on the differences between a 2-wire and an smbus interface, read appli- cation note 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? max5954l evaluation kit/evaluation system 8 _______________________________________________________________________________________ figure 2. 2-wire interface window (provides direct, low-level access to the max5954l with the max7313 and smbus 2-wire interface) downloaded from: http:///
has windows plug-and-play detected the board? bring up control panel->system->device manager,and look at what device nodes are indicated for usb. if there is an ?nknown device?node attached to the usb, delete it?his forces plug-and-play to try again. problem: unable to find u2 (max7313) is power applied to the max5954l ev kit vin2 and vin3 banana jacks? this is required for powering u2. are the scl and sda signals pulled up to vdd? the cmaxqusb interface board dip switch sw1enables the on-board resistors on the interface board. there must be pullup resistors somewhere for the smbus scl and sda signals. if using jumper wires to connect, are the scl and sda signals swapped? is the ground return missing? evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system _______________________________________________________________________________________ 9 downloaded from: http:///
evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system 10 ______________________________________________________________________________________ figure 3. max5954l ev kit schematic 12v gnd (12v) vin1 (3.3v) vin2 (3.3v aux) vin3 gnd gnd gnd gnd gnd gnd gnd tp4 gnd tp5 gnd tp6 gnd tp7 gnd tp8 gnd tp9 gnd tp10 gnd tp11 gnd tp12 vin2 3 21 87 56 4 4 3 21 87 56 gnd gnd gnd gnd gnd ju1 attn sw1 n.c.n.c. t2t1 n.c.n.c. n.c. n.c. n.c. pres-det pres_det fonon u1 on auxon auxon 12s+ 12s+ 12s- 12s- 12g 12g gnd gnd gnd gnd gnd gnd n35 gnd gnd aux0 3.3vaux d6 3.3vaux 3.3v d5 3.3v tp17 vin3 vin2 r19 10k ? r18 10k ? r28150 ? r17 open r16150 ? r15 0.005 ? 1% c81 f c91 f c12 0.1 f c14 open 3.3s+ 3.3g poradj pgnd gnd 12vin input output n.c.n.c. tim faultpwrgd 3.3vauxo3.3vauxin n.c.n.c. n.c. n.c. 3.3s- 12g 12s- 12s+ n1s tp14 tp1 tp2 tp3 vin3 12v tp13 r10 open c1 1500 f 16v r2 750 ? c7 1 f c2 3300 f 6.3v c4 10 f c5 10 f c3 10 f gnd c61 f 12v d2 r3 1k ? r4open r12 open c13open r11 open vin2 d3 d1 n1 n2 7 p6 p5 out tp15 out gnd gnd p4 p3 p2p1 p0 ad2 a2 gnd gnd vin3 vin2 vin3 ju3 sw2 vin 3 vin 3 sw3 ju4 vin3 out p11p12 p13 p14 p15 p16 auxon auxon on pres-det on fault ad1 u2 a1 int /o16 int v+ sda sda scl scl gnd a0 a1 a2 p7gnd gnd p8p9 p10 89 1011 12 2423 22 21 20 19 13 14 15 16 17 18 6 5 ju2 mrl r8 10k ? r9 3.3k ? r6 51k ? r751k ? c110.1 f r20open r21open r22open r2310k ? r2410k ? r2510k ? 43 21 28 2930 31 33 343536 32 18 2726 2 1 1 2524 23 22 21 20 19 fault pwrgd tp18 3.3vauxon tp19 pwrgd fault 3 3 45 6 7 8 9 1716 15 13 121110 14 1 1 3 3 2 2 1 1 3 3 2 2 green yellow d4 r13 150 ? r510k ? r14 150 ? max7313 note: for u1, ic paddle connects to pin 34 only and pin 35 has a dedicated trace to gnd banana jack. max5954l 3.3v tp16 tp20 r1 0.008 ? vin3 downloaded from: http:///
evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system ______________________________________________________________________________________ 11 figure 4. max5954l ev kit schematic, pci express x16 connectors b1b2 b3 b4 b5 b6 b7 b8 b9 b10b11 b12 b13 b14 b15 b16 b17 b18 b19 b20 b21 b22 b23 b24 b25 b26 b27 b28 b29 b30 b31 b32 b33 b34 b35 b36 b37 b38 b39 b40 b41 a41 a40 a39 a38 a37 a36 a35 a34 a33 a32 a31 a30 a29 a28 a27 a26 a25 a24 a23 a22 a21 a20 a19 a18 a17 a16 a15 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 n1sn3s perst#_j1 n1s n3s pres-det a2 a1 aux0 gnd gnd petp6 gnd gnd petn5 petp5 gnd gnd petn4 petp4 gnd prsnt2# rsvd gnd petn3 petp3 gnd gnd petn2 petp2 gnd gnd petn1 petp1 gnd prsnt2# gnd petn0 petp0 gnd rsvd wake# 3.3vaux jtag1 +3.3v gnd smdat smclk gnd +12v +12v +12v gnd pern5 perp5 gnd gnd pern4 perp4 gnd rsvd rsvd gnd pern3 perp3 gnd gnd pern2 perp2 gnd gnd pern1 perp1 gnd rsvd gnd pern0 perp0 petn0 refclk- refclk+ gnd perst# +3.3v +3.3v jtag5 jtag4 jtag3 jtag2 gnd +12v +12v prsnt1# b42 j1-b j1-a b43b44 b45 b46 b47 b48 b49 b50 b51 b52 b53 b54 b55 b56 b57 b58 b59 b60 b61 b62 b63 b64 b65 b66 b67 b68 b69 b70 b71 b72 b73 b74 b75 b76 b77 b78 b79 b80 b81 b82 a82 a81 a80 a79 a78 a77 a76 a75 a74 a73 a72 a71 a70 a69 a68 a67 a66 a65 a64 a63 a62 a61 a60 a59 a58 a57 a56 a55 a54 a53 a52 j2-1 j2 j4 perst#_j1pres-det fault pwrgd int j2-2 j2-3 on auxonout gnd j2-4j2-5 j2-6 j2-7 j2-8 j2-9 a51 a50 a49 a48 a47 a46 a45 a44 pres-det pres-det a43 a42 gnd gnd rsvd pci-16ex pci-16ex prsnt2# gnd petn15 petp15 gnd gnd petn14 petp14 gnd gnd petn13 petp13 gnd gnd petn12 petp12 gnd gnd petn11 petp11 gnd gnd petn10 petp10 gnd gnd petn9 petp9 gnd gnd petn8 petp8 gnd prsnt2# gnd petn7 petp7 gnd gnd petn6 gnd pern15 perp15 gnd gnd pern14 perp14 gnd gnd pern13 perp13 gnd gnd pern12 perp12 gnd gnd pern11 perp11 gnd gnd pern10 perp10 gnd gnd pern9 perp9 gnd gnd pern8 perp8 gnd rsvd gnd pern7 perp7 gnd gnd pern6 perp6 gnd j4-1 j2-2 j2-4j2-6 j2-8 j2-10j2-12 j2-14 j2-16 j2-18 j2-20 n.c. gnd gnd gnd gnd tp31tp32 vdd vdd vdd j4-3 sda sda sda j4-5 gnd j4-7 scl n.c.n.c. n.c. scl scl j4-9 suspendout suspendout j4-11j4-13 j4-15 j4-17 j4-19 alertin alertin female connector 2 x 10 pres-det downloaded from: http:///
evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system 12 ______________________________________________________________________________________ figure 5. max5954l ev kit component placement guide?omponent side figure 6. max5954l ev kit pc board layout?omponent side downloaded from: http:///
evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system ______________________________________________________________________________________ 13 figure 7. max5954l ev kit pc board layout?nner layer, ground plane figure 8. max5954l ev kit pc board layout?nner layer, power plane 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. 14 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2005 maxim integrated products printed usa is a registered trademark of maxim integrated products, inc. evaluate: max5954l/max5954a max5954l evaluation kit/evaluation system figure 9. max5954l ev kit pc board layout?older side figure 10. max5954l ev kit component place guide?older side downloaded from: http:///

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