general description the hs i 2 c -compatible module is a reference solution for implementing an interface that is compatible with the high-speed (hs) mode (3.4mhz, 1.7mhz), fast mode (400khz), and standard mode (100khz) of the i 2 c stan- dard. the module consists primarily of an altera epm3256aqc208-10 programmable logic device (pld) containing the di2cm core available from digital core design. the module allows microcontrollers (?s) with a compatible 8-bit-memory-mapped parallel interface to communicate with i 2 c-compatible slave devices. the hs i 2 c-compatible module is provided as part of selected maxim evaluation systems. the main purpose of the hs i 2 c-compatible module is the evaluation of maxim products. the use of the hs i 2 c-compatible module as a development board or any other use not described in selected maxim evaluation kit (ev kit)/ evaluation system (ev system) data sheets is not sup- ported by maxim. features hs-mode i 2 c-compatible interface (3.4mhz, 1.7mhz) fast-mode i 2 c-compatible interface (400khz) standard-mode i 2 c-compatible interface (100khz) proven design proven pc board layout on-board 40mhz crystal oscillator on-board regulated +3.3v evaluates: hs i 2 c-compatible parts hs i 2 c-compatible module ________________________________________________________________ maxim integrated products 1 designation qty description c1 c15, c19, c20, c21 18 0.1f 10%, 16v x7r ceramic capacitors (0603) tdk c1608x7r1c104kt c16 1 1f 20%, 10v x5r ceramic capacitor (0805) tdk c2012x5r1a105m c17 1 10f 20%, 25v x5r ceramic capacitor (1210) tdk c3225x5r1e106m c18 1 100f, 6.3v, 45m ? low-esr poscap (d2) sanyo 6tpc100m d1 1 1a, 30v schottky diode nihon ep10qy03 fb1, fb2 2 surface-mount ferrite beads (0603) tdk mmz1608b601c j1 1 not installed,10-pin, 2 x 5 header j2 1 20-pin, 2 x 10 male right-angle connector j3 1 2 x 20 right-angle female connector ju1, ju2, ju5 3 3-pin headers ju3, ju4, ju6, ju7, ju8 5 2-pin headers l1 1 10h inductor sumida cdrh6d28-100nc component list ordering information 19-3013; rev 0; 10/03 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. part number interface type HSI2CMOD hs/fast/standard-mode i 2 c-compatible designation qty description r1, r2 2 1.5k ? 5% resistors (1206) (suitable for a 2-wire bus capacitance of 200pf) r3, r4, r7 3 0 ? 5% resistors (1206) r5 1 165k ? 1% resistor (0603) r6 1 100k ? 1% resistor (0603) sw1 1 dip switch default: sw: 1-4 (on) sw: 2-3 (on) u1 1 altera epm3256aqc208-10 (208-pin pqfp) u2 1 step-down regulator (8-pin max) maxim max1776eua u3 1 40m h z cr ystal osci l l ator ( hal f- si ze d ip ) osci l ent 320- 40.0m - 5e - tts u4 1 tri-state logic buffer (5-pin sot23) fairchild semiconductor nc7sz126m5x u5, u6, u7 3 schmitt trigger input-logic inverters (5-pin sot23) fairchild semiconductor nc7sz14m5x none 5 shunts purchase of i 2 c components of maxim integrated products, inc. or one of its sublicensed associated companies, conveys a license under the phillips i 2 c patent rights to use these components in an i 2 c system, provided that the system con- forms to the i 2 c standard specification as defined by phillips.
evaluates: hs i 2 c-compatible parts hs i 2 c-compatible module 2 ____________________________________________________ description of hardware hs i 2 c-compatible module supplies the hs i 2 c-compatible module requires two supplies. the on-board 3.3v regulator requires an input voltage at vin of 4.5v to 24v (j3-5, j3-6). the module also requires a regulated 5v logic supply (j3-7, j3-8). a maxim c module normally provides both of these supplies. epm3256aqc208-10 pld (altera) the epm3256aqc208-10 is from altera s max3000a family of plds. this 256 product-term device accepts 3.3v or 5v logic even when powered from a 3.3v sup- ply. contact altera for any questions relating to the pld. see the component suppliers section for contact information. hs i 2 c-compatible module jumpers * the asterisks in the tables below indicate the default configuration. jumper shunt position description 1-2 3.3v i 2 c-compatible interface ju1 2-3* 5v i 2 c-compatible interface table 1. i 2 c-compatible logic-supply selection supplier phone website altera corporation 1-800-800-3753 www.altera.com digital core design 48-32282-8266 www.digitalcoredesign.com fairchild semiconductor 1-888-522-5372 www.fairchildsemi.com nihon 81-33343-3411 www.niec.co.jp oscilent 1-949-252-0522 www.oscilent.com sanyo 1-619-661-6322 www.sanyo.com sumida 1-847-545-6700 www.sumida.com tdk 1-847-803-6100 www.component.tdk.com component suppliers note: please indicate that you are using a maxim part when contacting these component suppliers. jumper shunt position description 1-2* enable the crystal oscillator ju2 2-3 disable the crystal oscillator table 2. crystal oscillator enable jumper shunt position description on do not use ju3 off* disconnect gpioa table 3. gpioa jumper shunt position description on do not use ju4 off* disconnect gpiob table 4. gpiob jumper shunt position description 1-2 reset the pld ju5 2-3* normal operation mode table 5. global pld clear (gclr) jumper shunt position description on the rd line to connector j3 pin 9 (j3-9) is active high; remove u5 ju6 off* the rd line to connector j3 pin 9 (j3-9) is active low; u5 must be present for proper operation table 6. active-high rd-line option jumper shunt position description on the cs line to connector j3 pin 11 (j3-11) is active high; remove u6 ju7 off* the cs line to connector j3 pin 11 (j3-11) is active low; u6 must be present for proper operation table 7. active-high cs-line option jumper shunt position description on the wr line to connector j3 pin 10 (j3-10) is active high; remove u7 ju8 off* the wr line to connector j3 pin 10 (j3-10) is active low; u7 must be present for proper operation table 8. active-high wr-line option
evaluates: hs i 2 c-compatible parts hs i 2 c-compatible module _______________________________________________________________________________________ 3 altera epm3256aqc208-10 dgnd pgnd +3.3v +3.3v +5v +5v vdd +5v +5v +5v fb2 fb1 2 1 3 ju1 +3.3v +3.3v 2 1 3 ju5 2 1 3 4 ju2 c16 1 f 85 1 v cc out oe gnd u3 gclr 184 182 d0 3 183 181 input/gclk1 input/oe1 input/oe2/gclk2 d0 d1 8 d1 d2 10 d2 d3 12 d3 d4 16 d4 d5 18 d5 d6 20 d6 d7 22 d7 ai0 28 ai0 ai1 34 ai1 int 49 int 57 rd gclr j3? j3? j3? j3? j3? j3? j3? j3? j3? j3?0 j3?1 j3?2 j3?3 j3?4 j3?5 j3?6 j3?7 j3?8 j3?9 j3?0 j3?1 j3?2 j3?3 j3?4 j3?5 j3?6 j3?7 j3?8 j3?9 j3?0 j3?1 j3?2 j3?3 j3?4 j3?5 j3?6 j3?7 j3?8 j3?9 j3?0 vin vin ai0 ai1 d0 d1 d2 d3 d4 d5 d6 int gpioa gpiob gclr d7 rd cs wr c19 0.1 f +5v rd 2 5 4 1 3 ju6 ay n.c. gnd v cc u5 59 cs c20 0.1 f +5v cs 2 5 4 1 3 ju7 ay n.c. gnd v cc u6 55 wr c21 0.1 f +5v wr 2 5 4 1 3 ju8 a y n.c. gnd v cc u7 75 82 180 185 6 14 32 40 50 72 84 94 108 116 134 142 152 174 190 200 gndint gndint gndint gndint gndio gndio gndio gndio gndio gndio gndio gndio gndio gndio gndio gndio gndio gndio gndio gndio j2? j1? j1? j1? j1? j1?0 j1? j1? j1? j1? j1? j2? j2? j2? j2?0 j2?2 j2?4 j2?6 j2?8 j2?0 j2? j2? j2? j2? j2? j2?1 j2?3 j2?5 j2?7 j2?9 sda scl gpioa gpiob vin vdd connector 2 x 10 j2 111 gpioa 110 gpiob ju3 ju4 1 n.c. 2 n.c. 51 n.c. 52 n.c. 53 n.c. 54 n.c. 103 n.c. 104 n.c. 105 n.c. 106 n.c. 155 n.c. 156 n.c. 157 n.c. 158 n.c. 207 n.c. 208 n.c. vdd c15 0.1 f 5 2 1 114 psclhs v cc y gnd a oe u4 4 3 sda sda scl scl scl 2 r2 1.5k ? r4 0 ? 118 pscl sda 1 3 4 r1 1.5k ? r3 0 ? 123 psda vdd sw1 +3.3v j1 30 189 176 127 tck tdo tms tdi c5 0.1 f c6 0.1 f c7 0.1 f c8 0.1 f c1 0.1 f c2 0.1 f c3 0.1 f c4 0.1 f c9 0.1 f c10 0.1 f c11 0.1 f c12 0.1 f c13 0.1 f c14 0.1 f 191 vccio 165 vccio 143 vccio 125 vccio 107 vccio 85 vccio 68 vccio 41 vccio 23 vccio 5 vccio 186 vccint 179 vccint 83 vccint 74 vccint u1 +3.3v j3 figure 1. hs i 2 c-compatible module schematic
evaluates: hs i 2 c-compatible parts description of pld core di2cm core (digital core design) the di2cm is an i 2 c-compatible master-ip core from digital core design. please contact digital core design for any questions relating to the di2cm ip core. see the component suppliers section for contact information or email digital core design at info@dcd.pl for more infor- mation. hs i 2 c-compatible module 4 _______________________________________________________________________________________ vin +3.3v c17 10 f 25v 5 in 3 ilim 6 ilim2 7 8 out 2 gnd 4 lx 1 fb r5 165k ? 1% r6 100k ? 1% l1 10 h c18 100 f 6.3v r7 0 ? d1 shdn max1776 u2 figure 2. hs i 2 c-compatible module schematic (continued) figure 3. hs i 2 c-compatible module component placement guide?omponent side
evaluates: hs i 2 c-compatible parts hs i 2 c-compatible module _______________________________________________________________________________________ 5 figure 4. hs i 2 c-compatible module pc board layout?omponent side
evaluates: hs i 2 c-compatible parts hs i 2 c-compatible module maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 6 _____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ? 2003 maxim integrated products printed usa is a registered trademark of maxim integrated products. figure 5. hs i 2 c-compatible module pc board layout?older side
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