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| evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 1 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. general description the maxim command module (CMAXQUSB) receivescommands from an ibm pc through the usb to create an spi or smbus /i 2 c-compatible interface. maxim evaluation kits (ev kits) that make use of the CMAXQUSB require custom software and can be ordered together as an evaluation system (ev system). ordering information for ev systems is included in the ev kit? corresponding data sheet. an ev system is an ev kit combined with an interface board such as a CMAXQUSB and custom software. refer to the appropriate ev kit data sheet for quick start and detailed operating instructions. the use of the CMAXQUSB as a maxq2000 develop- ment target is not supported. rather, use the maxq2000 ev kit (available at www.maxim-ic.com/maxq2000-kit ) for this purpose.the CMAXQUSB has been tested on windows 98 second edition, windows 2000, and windows xp . features ? pc-controlled i/o platform ? usb powered ? provides 2.5v, 3.3v, or 5v to ev kit ? spi bus: 8mhz burst ? i 2 c/2-wire bus: fast 400khz/standard 100khz ? optional 1.5k ? i 2 c bus pullup resistors component list 19-3838; rev 2; 12/10 ordering information part pc interface operating sstems supported CMAXQUSB+ usb windows 98se/2000/xp designation qt description c1, c2, c3 3 22f 10%, 16v x5r ceramic capacitors (1210) tdk c3225x5r1c226k c4 1 4.7f 10%, 10v x7r ceramic capacitor (0805) tdk c2012x5r1a475k c5 1 0.033f 10%, 6.3v (min) x7r ceramic capacitor (0603) tdk c1608x7r1e333k murata grm188r71e333k taiyo yuden emk107bj333ka c6, c7 2 22pf 5% c0g ceramic capacitors (0603) tdk c1608c0g1h220j murata grm1885c1h220j c8, c9 2 10pf 5% c0g ceramic capacitors (0603) murata grm1885c1h100j tdk c1608c0g1h100j c10Cc16, c23Cc32 (on back of board) 17 0.1f 10%, 10v (min) x7r ceramic capacitors (0603) tdk c1608x7r1e104k designation qt description c17Cc22 (on back of board) 6 1f, 6.3v (min) x7r ceramic capacitors (0603) tdk c1608x5r0j105k murata grm188r60j105k taiyo yuden jmk107bj105ma d1 1 100v, 1a bridge rectifier (d-70/dip-6) diodes inc. df005m j2, j3, ju2Cju5 0 not installed, 2-pin headers led1, led2 2 red leds (t1-3/4) panasonic ln21rph led3 1 yellow (amber) led (t1-3/4) panasonic ln41yph led4 1 green led (t1-3/4) panasonic ln31gcph p2 1 usb type-b, right-angle pc-mount receptacle p3 1 20-pin (2 x 10) right-angle male header p4 1 40-pin (2 x 20) right-angle male header p5 (jtag) 1 10-pin (2 x 5) vertical header, keyed pin 7 spi is a trademark of motorola, inc. smbus is a trademark of intel corp. windows and windows xp are registered trademarks of microsoft corp. + denotes lead(pb)-free and rohs compliant. downloaded from: http:///
evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 2 designation qt description p1 0 not installed (2mm power jack) p6 1 3-pin header p7 1 4-pin header p8 1 6-pin header r1 1 2.2k 5% resistor (1206) r2, r5, r6 3 1.5k 5% resistors (1206) r7, r8Cr11 5 470k 5% resistors (1206) r12, r13 2 27 5% resistors (1206) r14 1 10k 5% resistor (1206) r18 1 4.7k 5% resistor (1206) r19 1 100k 5% resistor (1206) sw1 1 2-circuit dip switch (dip-4) u1 1 low-power microcontroller (68 qfn) maxim maxq2000-rax+ u2 1 ftdi ft232bl (32 tqfp, 7mm x 7mm) u3 1 ldo linear regulator (5 sc70) maxim max8511exk25+t (top mark: adv) u4 1 93c46 type 3-wire eeprom (8 so) 16-bit architecture u5 1 low-voltage, p-channel mosfet (8 so) maxim max890lesa+ u6, u7, u8 3 8-channel level translators (20 tssop) maxim max3001eeup+ designation qt description u9 1 low-voltage level translator (8 sot23) maxim max3373eeka+t (top mark: aaks) u10 1 low-voltage level translator (14 tssop) maxim max3390eeud+ u11 1 ldo linear regulator (5 sc70) maxim max8511exk33+t (top mark: aei) y1 1 16mhz crystal (hc49/us) parallel resonant, 20pf load suntsu scs20b-16.000mhz-i y2 1 6mhz crystal (hc49/us) parallel resonant, 20pf load suntsu scs22b-6.000mhz-i y3 0 not installed, 32.768khz crystal 1 vertical header 2 x 3 pins 4 rubber bumpers, 0.100in h x 0.400in w square 1 usb high-speed a-to-b cable, 5ft (1.5m) 1 shunt 1 pcb: command module (CMAXQUSB) component list (continued) downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 3 supplier phone website murata electronics north america, inc. 770-436-1300 www.murata-northamerica.com panasonic corp. 800-344-2112 www.panasonic.com suntsu frequency control 949-305-0220 www.suntsuinc.com taiyo yuden 800-348-2496 www.t-yuden.com tdk corp. 847-803-6100 www.component.tdk.com component suppliers quick start maxim ev systems whose ordering number ends inevcmaxqu are two-board sets, comprising a CMAXQUSB interface board and an ev kit board specif- ic to the device being evaluated. for example, the max6870evcmaxqu would be a two-board set consist- ing of the max6870evkit and the CMAXQUSB. the fol- lowing generic quick start procedure assumes that the CMAXQUSB board will be used with a companion ev kit. required equipment any maxim ev system with the evcmaxqu suffix, such as the max6870evcmaxqu device-specific ev kit boardCMAXQUSB interface board usb type a-to-b cable ( included with the CMAXQUSB ) computer running windows 98se/2000/xp with a spare usb port administrator privileges may be required when firstinstalling the device on windows 2000/xp. procedure do not turn on the power until all connections arecomplete. 1) select 2.5v, 3.3v, or 5v logic by setting the CMAXQUSB vdd select jumper. see the jumper tables section. 2) ensure that the companion ev kit board? jumper settings are correct. refer to your companion evkit? documentation. 3) connect the boards together. 4) install the evaluation software on your computer by running the install.exe program on the installa-tion disk. the program files are copied and icons are created for them in the windows start menu. 5) connect the usb cable between the CMAXQUSB and the computer. when you plug in the CMAXQUSB board for the first time, the windows plug-and-playsystem detects the new hardware and automatically runs the add new hardware wizard (if the add new hardware wizard does not appear after a minute, unplug the board from the usb and plug it in again). make certain to specify the search location. maxim software designed for CMAXQUSB includes a copy of the device driver in the installed software directo- ry. refer to application note 3601: troubleshooting windows plug-and-play and usb for maxim evaluation kits for more details. 6) during device driver installation, windows xp shows a warning message indicating that the device drivermaxim uses does not contain a digital signature. this is not an error condition and it is safe to pro- ceed with the installation. 7) start the ev kit software by clicking its icon in the windows start menu. 8) refer to the companion ev kit? documentation for fur- ther instructions demonstrating its custom software. detailed description of hardware the low-voltage risc microcontroller, maxq2000-rax(u1), processes commands sent by a program running on the pc. each particular ev kit has its own custom software specific to that kit. the ftdi ft232bm (u2) provides the usb engine. the usb 5v power is regulated down to 3.3v by u11 and down to 2.5v by u3. led1 indicates usb 5v power is pre- sent. led2, led3, led4 are general-purpose indicators. level translators u6?10 convert the maxq2000? 2.5v logic signals to the external vdd logic level, which is jumper-selectable for 2.5v, 3.3v, or 5v logic. u9, the max3372, is a bidirectional level translator specially designed for the i 2 c bus. dip switch sw1 optionally disables the on-board 1.5k ? termination resistors, allowing the use of external, user-supplied i 2 c pullup resistors. level translator u10 is designed for spi. note: indicate that you are using the CMAXQUSB or maxq2000 when contacting these component suppliers. downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 4 connectors p3 and p4 are designed to allow hardwarecompatibility with previous maxim ev kit module designs. headers p7 and p8 allow convenient probing of smbus/i 2 c and spi bus signals. connector p5 is used during factory test to program themaxq2000 in-circuit using the jtag interface. the connector pinout is compatible with the maxq2000 ev kit? maxq-jtag-001 board. platform capabilities and limitations general-purpose input and output (gpio) pins led1 is lit when vdd is powered. led2, led3, and led4are general-purpose software-controlled indicators, which also connect to gpio lines. when driven as inputs, the output impedance should be less than 6000 ? . smbus/i 2 c/2-wire interface the CMAXQUSB module offers ?it-banged?i 2 c at 400khz (full speed, the default) or 100khz (slow speed).optional user-switchable scl/sda pullup resistors are provided on-board. your pc and its software limits attainable throughput. the smbus/i 2 c bus runs in bursts at rated speed, but there is some variable ?eadtime?between transfers due to communications over- head. properly written pc software can minimize this dead time but cannot completely eliminate it. spi/3-wire interface the CMAXQUSB module offers spi at up to 8mhz,using the default pin configuration. all four cpol/cpha modes are supported. your pc and its software limits attainable throughput. the spi bus runs in bursts at rated speed, but there is some variable ?ead time between transfers, due to communications overhead. properly written pc software can minimize this dead time but cannot completely eliminate it. power supply the CMAXQUSB is powered by the host pc? universalserial bus (usb). the vdd system voltage can be con- figured for direct usb 5v power, 3.3v, or 2.5v using one of two on-board linear regulators. an optional external 9v dc plug-in transformer (?all wart? can be connected for any ev kit board that requires this unreg- ulated 9v dc power supply. both the unregulated 9v dc and regulated vdd power-supply voltages are provided to the ev kit board on the 2 x 10 (p3) and 2 x 20 (p4) connectors. current available to a compan- ion ev kit is 80ma. during usb suspend, the ft232bm drives the max890 into a partially powered mode, bringing vdd up to approximately 1.8v. no commands are sent to thefirmware during this mode, so there is no impact. however, custom designs not requiring usb suspend should consider removing the max890 to avoid this problem. scripting and data acquisition the CMAXQUSB can store a script of commands in itsinternal memory to eliminate communication ?ead time.?a script may be repeated up to 256 times, but branching and decision making are not supported. a script may also have a maximum of 126 command/data bytes. up to 1024 bytes of data may be collected. smbus/i 2 c/2-wire bus pullup resistors smbus/i 2 c requires a pullup resistor on both scl and sda. the CMAXQUSB provides 1.5k ? pullup resistors, enabled by setting both circuits of dip switch sw1?n.?if there are pullup resistors already on the bus, disable the CMAXQUSB? pullup resistors by setting both circuits of sw1 ?ff. jumper position function 2.5v v dd = 2.5v 3.3v v dd = 3.3v ju1 vdd select 5v v dd = 5v j2 (underneath sw1) open factory assembly option: replaces sw1-1. j3 (underneath sw1) open factory assembly option: replaces sw1-2. ju2 closed connects maxq2000 p6.2 to p6.3, supporting the maxim 1-wire interface. open jtag connector p5 does not connect to the +5v supply. ju4 closed jtag connector p5 connects to the +5v supply. open optional higher voltage unregulated power supply is left unconnected; connector p1 is not used. ju5 closed enable optional unregulated power supply from p1 to connectors p3 and p4. jumper tables 1-wire is a registered trademark of maxim integrated products, inc. downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 5 connector p3 connector p3 is a 20-pin, dual-row header that con-nects to smbus/i 2 c-based kits. the pinout is compati- ble with maxim? previous smbus/i 2 c solution, the maxsmbus board. see table 1.if designing a custom ev kit board, beware: the ground return system does not connect pin 20 . connector p4 connector p4 is a 40-pin, dual-row header that con-nects to spi and 8-bit parallel kits. the pinout is com- patible with maxim? previous spi solution, the 68hc16module board. see table 2. gpio pins k1?8 and k1k15?must be driven with a 4.7k ? or lower impedance source to turn around the bidirectional level translators. table 1. connector p3 description * this +12v signal is provided only for legacy systems and is normally unpowered. * this +12v signal is provided only for legacy systems and is normally unpowered. p3 pin label function 1 vdd power supply. 2.5v, 3.3v, or 5v selected by CMAXQUSB vdd se lect jumper. 2, 4, 5, 6, 8, 10, 12, 14, 16, 18, 19 gnd ground return 3 sda smbus/i 2 c sda (data) 7 scl smbus/i 2 c scl (clock) 9 k6 general-purpose i/o designated as k6. can be used for smbus susp end output. 11 k1 general-purpose i/o designated as k1. can be used for smbus ale rt input. 13 k2 general-purpose i/o designated as k2 15 k3 general-purpose i/o designated as k3 17 k4 general-purpose i/o designated as k4 20 +12v* optional unregulated higher voltage (7.5v to 16.5v) power supply . enabled only if CMAXQUSB jumper ju5 is installed and closed, and if external power is applied through connector p1. table 2. connector p4 description p4 pin label gpio designator function 1C4 gnd ground return 5, 6 +12v* optional unregulated higher voltage (7.5v to 16.5v) power supply . enabled only if CMAXQUSB jumper ju5 is closed, and if external p ower is applied through connector p1. 7, 8 vdd power supply. 2.5v, 3.3v, or 5v selected by CMAXQUSB vdd select jumper. 9 rd k13 when k0 = 1 active-low read strobe 10 wr k14 when k0 = 1 active-low write strobe 11 cs0 k15 when k0 = 1 active-low memory chip-select strobe 12, 13, 14 no connection. reserved for additional memory chip-select strobes. 15 a0 k9 when k0 = 1 memory address lsb 16 a1 k10 when k0 = 1 memory address 17 a2 k11 when k0 = 1 memory address 18 a3 k12 when k0 = 1 memory address msb 19 d0 k1 when k0 = 1 memory data lsb downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 6 connector p5: jtag debug/programming interface connector p5 is used during factory test to program thefirmware into the maxq2000. this connector pinout is identical to the maxq2000 ev kit, maxq2000-kit. see table 3. connector p6: maxim 1-wire interface although there are currently no mating ev kits that usethis feature, the maxq2000? 1-wire interface signal connects to header p6. see table 4. table 2. connector p4 description (continued) p4 pin label gpio designator function 20 d1 k2 when k0 = 1 memory data 21 d2 k3 when k0 = 1 memory data 22 d3 k4 when k0 = 1 memory data 23 d4 k5 when k0 = 1 memory data 24 d5 k6 when k0 = 1 memory data 25 d6 k7 when k0 = 1 memory data 26 d7 k8 when k0 = 1 memory data msb 27 k1 k1 general-purpose i/o 28 k2 k2 general-purpose i/o 29 k3 k3 general-purpose i/o 30 k4 k4 general-purpose i/o 31 k5 k5 general-purpose i/o 32 k6 k6 general-purpose i/o 33 k7 k7 general-purpose i/o 34 k8 k8 general-purpose i/o 35 miso k11 spi master-in, slave-out (miso) data 36 mosi k12 spi master-out, slave-in (mosi) data 37 sclk k10 spi clock 38 cs k9 spi chip select. configurable active high or active low. 39 ow k15 general-purpose i/o, maxim 1-wire bus 40 no connection * this +12v signal is provided only for legacy systems and is normally unpowered. p5 pin label function 1 tck tck to maxq2000 test access port (p4.0) 2, 10 gnd ground return 3 tdo tdo to maxq2000 test access port (p4.3) 4 vddio maxq2000 vddio power supply 5 tms tms to maxq2000 test access port (p4.2) 6 reset active-high reset to maxq2000 7 key no connection. pin is physically removed. 8 +5v optional +5v connection 9 tdi tdi from maxq2000 test access port table 3. connector p5 description p6 pin label function 1 vdd vdd power supply 2 ow maxim 1-wire interface, through level translator u6 3 gnd ground return table 4. connector p6 description downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 7 connector p7: smbus/i 2 c test points for convenience, the smbus/i 2 c interface signals are connected to labeled pins on header p7. see table 5. connector p8: spi test points for convenience, the spi interface signals are connect-ed to labeled pins on header p8. see table 6. detailed description of firmware the CMAXQUSB firmware was developed usingthe max-ide assembly language development environment. full source code is available at www.maxim-ic.com/tools/evkit under the project name CMAXQUSB firmware . if designing a custom ev kit board requiring an inter-rupt service routine in custom firmware, gpio signals k5?8 are the suggested locations for the interrupt sig- nal. the standard CMAXQUSB firmware does not ser- vice interrupts on any gpio pins. troubleshooting problem: software reports it cannot find the board. verify that the CMAXQUSB power led is lit. verify that the usb cable is connected. verify that windows plug-and-play detected the board. bring up control panel -> system -> devicemanager, and look at what device nodes are indicat- ed for the 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 smbus/i 2 c device. verify that the scl and sda signals are pulled up to vdd. CMAXQUSB dip switch sw1 enables the on-board resistors. there must be pullup resistors somewhere on the bus. if using wires to connect the CMAXQUSB to your target board, make certain that you have notswapped the scl and sda signals. verify that the ground return is connected. p7 pin label function 1 vdd vdd power supply 2 sda smbus/i 2 c sda (data) 3 gnd ground return 4 scl smbus/i 2 c scl (clock) table 5. connector p7 description p8 pin label function 1 vdd vdd power supply 2 miso master-in, slave-out data 3 mosi master-out, slave-in data 4 sclk spi clock 5c s chip select. configurable activehigh or active low. 6 gnd ground return table 6. connector p8 description downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 8 u1p13 1 49 v dd u1p14 2 seg11/p1.3 seg7/p0.7/int3 65 u1p07 seg8/p1.0 66 u1p10 seg9/p1.1 67 u1p11 seg10/p1.2 68 u1p12 seg6/p0.6/int2 64 u1p06 seg5/p0.5/int1 63 u1p05 seg4/p0.4/int0 62 u1p04 seg3/p0.3 61 u1p03 seg2/p0.2 60 u1p02 seg1/p0.1 59 u1p01 seg0/p0.0 58 u1p00 vadj 57 vddiovddio vlcd2 56 vlcd1 55 seg28/p3.4/int4 18 seg29/p3.5/int5 19 seg30/p3.6/int6 20 seg31/p3.7/int7 21 seg32 22 seg33/com3 23 seg34/com2 24 seg35/com1 25 com0 26 vlcd 54 p7.1/rxo/int15 53 u1p71 p7.0/txo/int14 52 u1p70 u1p64u1p63 46 47 p6.4/tob/wkout u1p65 48 p6.5/to/wkout p6.3/t2/ow_in u1p62u1p61 44 45 p6.2/t2b/ow_out p6.1/t1/int13 u1p60 43 p6.0/t1b/int12 u1p57u1p56 40 41 p5.7/misop5.6/sclk u1p55u1p54 38 39 p5.5/mosi p5.4/ss u1p53u1p52 y332.768khz open 3634 35 37 p5.3/tx1/int11 p5.2/rx1/int10 32kin 32kout u1p40u1p41 u1p42 u1p43 reset y116mhz 51 50 hfxin vddio hfxout u1p15 3 seg12/p1.4 u1p16 4 seg13/p1.5 u1p17 5 seg14/p1.6 u1p20 6 seg15/p1.7 u1p21 7 seg16/p2.0 u1p22 8 seg17/p2.1 u1p23 9 seg18/p2.2 u1p24 10 seg19/p2.3 u1p25 11 seg20/p2.4 u1p26 12 seg21/p2.5 13 seg22/p2.6 14 seg23/p2.7 15 seg24/p3.0 1628 42 seg25/p3.1 17 seg26/p3.2seg27/p3.3 33 reset 32 p4.3/tdo 31 p4.2/tms 30 p4.1/tdi/int9 29 p4.0/tck/int8 gnd gnd +2.5v 27 vddio c9 10pf c8 10pf vddio c240.1 f +2.5 c230.1 f u1 (exposed pad connects to gnd) maxq2000-rax figure 1a. CMAXQUSB schematic (sheet 1 of 4) downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 9 usbvcc 4 u1p71 25 6 30 3 26 13 87 5 txd u1p70 24 rxd u1p52 23 rts u1p65 22 cts u1p53 21 dtr u1p64 20 dsr 19 dcd 18 ri 16 txden 12 txled 11 rxled 15 pwren 10 sleep 14 pwrctl eedata 2 32 1 vddio c150.1 f c12 0.1 f r7 470 ? r12 27 ? r13 27 ? r2 1.5k ? c5 0.033 f c140.1 f c130.1 f r1410k ? r1 2.2k ? usbvcc reset usbdmusbdp rstout 3v3out 2731 c6 22pf xtin 28 c7 22pf y26mhz c160.1 f xtouteecs eesk avvc vcc vcc vccio eedatatest 2 clk 6 7 vcc ncnc eedata 3 di 1 cs 4 d0 8 usbvcc u4 93c46 u2 ft232bm p2-3 p2-2 p2-1 p2 usb series b p2-4 max8511 u11 +5v c17 1 f +3.3v c222 f 52 13 out gnd inshdn u3 max8511 +5v c18 1 f +2.5v vddio c191 f 52 13 out gnd inshdn gnd 17 gnd 9 agnd 29 gnd 5 r19100k ? r184.7k ? +5v c44.7 f 76 5 4 3 12 8 outout gnd on/off set inin fault c3 22 f j3 sw1 j2 vddio c100.1 f c110.1 f vddio vdd u9 max3373 p3-3 p3-7 i/ov cc 2 i/ov cc 1 v cc tri-state u1p61 u1p60 gndv l i/ov l 2 i/ov l 1 1 245 6 7 8 1 2 4 3 3 ju3 vdd r61.5k ? r5 1.5k ? max890 figure 1b. CMAXQUSB schematic (sheet 2 of 4) downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 10 u1p26 3 2 v l u1p25 4 u1p63 u1p62 1 i/ov l 1 p4-10p4-9 16 17 i/ov cc 3 p4-11 18 i/ov cc 2 p4-39 20 i/ov cc 1 i/ov cc 4 p4-18p4-17 14 15 i/ov cc 5 i/ov cc 6 p4-16 13 i/ov cc 7 p4-15 12 i/ov cc 8 11 gnd v cc u1p24 5 u1p23 6 u1p22 7 u1p21 8 u1p20 9 vddio 10 en vddio 19 vdd ju2 vddio c260.1 f vdd c310.1 f vddio c320.1 f vdd 1 2 3 p6 r8470 ? r9470 ? r10470 ? r11470 ? vddio led1led red vddio led2led red u1p00 vddio led3led yellow u1p01 vddio led4led green u1p02 u1p16 3 2 v l u1p15 4 i/ov l 2 u1p17 1 i/ov l 1 p4-24p4-23 16 17 i/ov cc 3 p4-25 18 i/ov cc 2 p4-26 20 i/ov cc 1 i/ov cc 4 p4-22p4-21 14 15 i/ov cc 5 i/ov cc 6 p4-20 13 i/ov cc 7 p4-19 12 i/ov cc 8 11 gnd v cc u1p14 5 i/ov l 3 u1p13 6 i/ov l 4 u1p12 7 i/ov l 5 u1p11 8 i/ov l 6 u1p10 9 i/ov l 7 i/ov l 8 i/ov l 2 i/ov l 3 i/ov l 4 i/ov l 5 i/ov l 6 i/ov l 7 i/ov l 8 vddio 10 en vddio 19 vdd vddio c270.1 f max3001 u7 u1p57 2 1 v l u1p56 3 ov l 1 p4-37p4-36 11 12 ov cc 2 p4-35 13 iv cc 1 ov cc 3 p4-38 9 10 ov cc 4 n.c. 8 tri-state v cc u1p55 4 iv l 2 u1p54 5 iv l 3 6 iv l 4 n.c. vddio 7 gnd vddio 14 vdd u10 max3390 u1p06 3 2 v l u1p05 4 i/ov l 2 u1p17 1 i/ov l 1 p4-32p4-31 16 17 i/ov cc 3 p4-33 18 i/ov cc 2 p4-34 20 i/ov cc 1 i/ov cc 4 p4-30p4-29 14 15 i/ov cc 5 i/ov cc 6 p4-28 13 i/ov cc 7 p4-27 12 i/ov cc 8 11 gnd v cc u1p04 5 i/ov l 3 u1p03 6 i/ov l 4 u1p02 7 i/ov l 5 u1p01 8 i/ov l 6 u1p00 9 i/ov l 7 i/ov l 8 vddio 10 en vddio 19 vdd vddio c300.1 f vdd c221 f c290.1 f vdd c211 f c280.1 f vdd c201 f c250.1 f max3001 u8 max3001 u6 figure 1c. CMAXQUSB schematic (sheet 3 of 4) downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 11 ju5 ju4 vdd p3 2 x 10 header +12v + - - - c122 f p1open p3-3 p3-3 p3-7 p3-7 p4-32 p3-9 p4-27 p3-11 p4-28 p3-13 p4-29 p3-15 p4-30 p3-17 p3-5 p3-19 p3-1 +12v p3-20 p3-2 p3-4 p3-6 p3-8 p3-10 p3-12 p3-14 p3-16 p3-18 vdd p8 1 x 6 header p4-35 p8-2 p4-36 p8-3 p4-37 p8-4 p4-38 p8-5 p8-6 p8-1 vdd p7 1 x 4 header p3-3 p7-2 p3-7 p7-4 p7-3 p7-1 p5 2 x 5 header u1p42 p5-5 u1p43 p5-3 u1p40 p5-1 u1p41 p5-9 p5-7 vddio p5-2 p5-4p5-8 p5-10 p5-6 reset +5v +12v p4 2 x 20 header p4-9 p4-9 p4-11 p4-11 p4-13 p4-15 p4-15 p4-17 p4-17 p4-19 p4-19 p4-21 p4-21 p4-23 p4-23 p4-25 p4-25 p4-27 p4-27 p4-29 p4-29 p4-31 p4-31 p4-33 p4-33 p4-35 p4-35 p4-37 p4-37 p4-39 p4-39 p4-16p4-18 p4-20 p4-22 p4-24 p4-26 p4-28 p4-30 p4-32 p4-34 p4-36 p4-38 p4-40 p4-14 p4-12 p4-16 p4-10 p4-10 p4-18p4-20 p4-22 p4-24 p4-26 p4-28 p4-30 p4-32 p4-34 p4-36 p4-38 p4-3 p4-1 p4-5 vdd p4-7 +12v p4-4 p4-2 p4-6 vdd p4-8 vdd ju1 2 x 3 header ju1-1 +5v ju1-2 +3.3v ju1-3 vdd ju1-4 vdd ju1-5 +2.5v ju1-6 d1 bridge/df005m 3 1 64 13 2 figure 1d. CMAXQUSB schematic (sheet 4 of 4) downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 12 figure 2. CMAXQUSB component placement guide?omponent side (top silkscreen) downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 13 figure 3. CMAXQUSB component placement guide?older side (bottom silkscreen) downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 14 figure 4. CMAXQUSB pcb layout?omponent side downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 15 figure 5. CMAXQUSB pcb layout?older side downloaded from: http:/// evaluates: spi and smbus/i 2 c-compatible parts CMAXQUSB user s guide 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. the parametric values (min and max limits) shown in the electrical characteristics table are guaranteed. other parametric values quoted in this data sheet are provided for guidance. 16 _______________maxim integrated products, inc. 160 rio robles, san jose, ca 95134 usa 1-408-601-1000 2012 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 2 12/10 updated y3 in componen lis and figure 1a 2, 8 downloaded from: http:/// |
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