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general description the mxl1543 evaluation kit (ev kit) combines maxim? multiprotocol clock/data transceiver (mxl1543), control transceiver (mxl1544), and cable terminator (mxl1344a) chips. this chipset forms a complete software-selectable multiprotocol data terminal equipment (dte) or data com- munications equipment (dce) interface port. the mxl1543, mxl1544, and mxl1344a chipset sup- ports v.28 (rs-232), v.11(rs-449/v.36, eia530, eia530- a, x.21), and v.35 protocols. net1, net2, tbr-1, and tbr-2 compliance has been certified by tuv telecom services, inc. internal charge pumps allow this kit to oper- ate off a single +5v supply. the mxl1543 ev kit was designed to take advantage of the chipset? flow-through pinout. this kit includes a 40- pin header (logic signals), a female db25 connector (pro- tocol signals), three sma connectors (high-speed logic signals), and scope probe connectors for measuring the high-speed data signals (logic and protocol signals). the mxl1543 ev kit can evaluate the max3175 and is used in place of the mxl1544. contact maxim to order samples of the max3175cai. no further changes are required to the board to evaluate the max3175. features programmable transceiver supports v.28 (rs-232) v.11 (rs-449/v.36, eia530, eia530-a, x.21) v.35 true fail-safe receiver inputs certified tbr-1 and tbr-2 compliant certified net1 and net2 compliant programmable cable termination (mxl1344a) fully assembled and tested evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit ________________________________________________________________ maxim integrated products 1 19-2057; rev 1; 10/03 part MXL1543EVKIT 0? to +70? temp range ic package 28 ssop (2), 24 ssop ordering information designation qty description c1, c2, c5, c9 c13 8 1f, 10v ceramic capacitors (0805) tdk c2012x5r1a105m c3, c4 2 4.7f, 10v ceramic capacitors (1206) tdk c3216x5r1a475m c6, c7, c8 3 100pf ceramic capacitors (0603) c14, c15 2 0 .1f ceramic capacitors (0603) c16 1 0 .1f ceramic capacitor (0805) c17 1 47f, 16v tantalum capacitor (d case) avx tpsd476m016r0200 r1, r2, r3 3 49.9 ? 1% resistors (0805) r4 r19 16 1.5k ? 5% resistors (0805) d1 d6 6 red led d7 d12 6 green led d13 16 4 yellow led u1 1 mxl1543cai (28-pin ssop) u2 1 mxl1544cai (28-pin ssop) u3 1 mxl1344acag (24-pin ssop) u4, u5 2 inver ting le d dr i ver s (20- pi n so) ti s n 74h c 240d w or m otor ola m c74h c240ad w component list designation qty description rxd/txd, rxc/scte, txc/ n/a, n/a /txc, scte/rxc, txd/rxd, rxda/txda, rxdb/txdb, rxca/sctea, rxcb/scteb, txca/txca, txcb/txcb, sctea/rxca, scteb/rxcb, txda/rxda, txdb/rxdb 16 scope probe connectors (top mount, 3.5mm ground cylinder) tektronix 131-4244-00 (qty 100) 131-5031-00 (qty 25) j1 1 40-pin header (2x20) 0.1in center j2 1 d b25 r i g ht- ang l e fem al e connector am p am p 0012 747846- 4 j3, j4, j5 3 s m a connector s ( p c ed g e m ount) e fjohnson 142- 0701- 801 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.
evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit 2 _______________________________________________________________________________________ quick start the mxl1543 ev kit is extremely flexible and has sever- al settings for both the ics as well as the board. the ics have been put into no cable mode as the default mode. in no cable mode, the user is able to program the desired protocol with an external controller connect- ed to the 40-pin header. the default mode settings are shown in tables 1, 2, and 3. by default, the sma con- nectors (j3, j4, and j5) are terminated with 50 ? and the mxl1544 s transmitter input lines are all tied low. 1) connect a single +5v, 5% power supply between vcc and gnd located at the lower-left corner of the mxl1543 ev kit board. 2) the yellow leds indicate the protocol mode of the chipset. the leds light when the corresponding signal is a logic high. verify that all yellow leds light up, indicating no cable mode. all board labels, including all the labels for the leds, follow the same label format. the board label format is the top label corresponds to dce mode and the bottom label corresponds to dte mode. 3) the green leds are attached to the receiver logic outputs of the mxl1543 and mxl1544. the leds light when the receiver logic outputs are a logic high. verify that all green leds light up when no signals are attached to the db25 connector. note: the receivers have the true fail-safe feature allowing zero volts differential voltage to be a valid state that forces the receiver outputs high. 4) the red leds are attached to the transmitter logic inputs of the mxl1543 and mxl1544. the leds light when the transmitter logic inputs are a logic high. verify that none of the red leds light up when no signals are connected to the 40-pin header. detailed description the mxl1543 ev kit was designed to take advantage of the chipset s flow-through pinout. the logic signals have all been routed to the 40-pin header located on the left side of the ev kit board and the protocol signals have all been routed to the female db25 connector located on the right side of the board. various connectors have been added to the mxl1543 ev kit to aid in taking quality measurements. leave ju17 unconnected when measuring the supply current of the chipset to eliminate the led current. however, the supply current measurements still include the unloaded supply current of the led driver ics (up to designation qty description ju1 ju7 7 3-pin headers ju8 ju17 10 2-pin headers none 17 shunts none 1 mxl1543 ev kit pc board none 1 mxl1543 ev kit data sheet none 1 mxl1543 data sheet none 1 mxl1544/max3175 data sheet none 1 mxl1344a data sheet component list (continued) mode m2 m1 m0 dce/ dte t1 t2 t3* r1* r2 r3 no cable 1 1 1 1 z z z z z z table 1. mxl1543 default mode mode m2 m1 m0 dce/ dte t1 t2 t3* r1* r2 r3 t4 r4 no cable 1 1 1 1 z z z z z z z z z = high impedance. *t3 and r1 share a single ic pin. z = high impedance. *t3 and r1 share a single ic pin. table 2. mxl1544/max3175 default mode mode m2 m1 m0 dce/ dte r1 r2 r3 r4 r5 r6 invert no cable 1 1 1 1 v.11 v.11 v.11 v.11 v.11 v.11 0 table 3. mxl1344a default mode
evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit _______________________________________________________________________________________ 3 160a at +70 c). scope probe connectors have been added to measure the high-speed signals of the trans- mitter inputs/outputs and receiver inputs/outputs of the mxl1543. the scope probe connectors located on the left side of the board are connected to the logic input and output signals. the scope probe connectors locat- ed on the right side of the board are connected to the protocol input and output signals. three sma connec- tors have also been provided for driving the high-speed transmitter inputs of the mxl1543. the row of 16 leds across the top of the board are logic indicators. the red leds indicate the state of the transmitter inputs of the mxl1543 and mxl1544. the green leds indicate the state of the receiver outputs of the mxl1543 and mxl1544. the yellow leds indicate the state of the protocol and the protocol termination modes. the leds light up when their corresponding signals are a logic high. configuration the following is a step-by-step procedure to aid in con- figuring the mxl1543 ev kit. the mxl1543 ev kit is extremely flexible and has several settings for both the ics, as well as the board. the logic signals have all been routed to the 40-pin header on the left side of the board. the protocol signals have all been routed to the female db25 connector on the right side of the board. the chipset protocol modes can be configured to sup- port v.28 (rs-232), v.11 (rs-449/v.36, eia530, eia530- a, x.21), and v.35 protocols. all chipset logic inputs, led power, and shield ground connection are jumper selectable. the board includes sma connectors (j3, j4, and j5) with optional 50 ? termination. the board set- tings will be separated in the following sections: chipset protocol modes, clock/data transmitter input settings, control transmitter input settings, sma termination, and power/ground: 1) connect a single +5v 5% power supply between vcc and gnd located at the lower-left corner of the mxl1543 ev kit board. 2) chipset protocol modes: select the desired chipset protocol mode using the mxl1543, mxl1544, and mxl1344a selection mode tables (tables 4, 5, and 6). connect the mode m2m1m0 dce/ dte t1 t2 t3* r1* r2 r3 not used (default v.11) 0 0 0 0 v.11 v.11 z v.11 v.11 v.11 rs530a 0 0 1 0 v.11 v.11 z v.11 v.11 v.11 rs530 0 1 0 0 v.11 v.11 z v.11 v.11 v.11 x.21 0 1 1 0 v.11 v.11 z v.11 v.11 v.11 v.35 1 0 0 0 v.35 v.35 z v.35 v.35 v.35 rs449/v.36 1 0 1 0 v.11 v.11 z v.11 v.11 v.11 v.28/rs-232 1 1 0 0 v.28 v.28 z v.28 v.28 v.28 no cable 1 1 1 0 z z z z z z not used (default v.11) 0 0 0 1 v.11 v.11 v.11 z v.11 v.11 rs530a 0 0 1 1 v.11 v.11 v.11 z v.11 v.11 rs530 0 1 0 1 v.11 v.11 v.11 z v.11 v.11 x.21 0 1 1 1 v.11 v.11 v.11 z v.11 v.11 v.35 1 0 0 1 v.35 v.35 v.35 z v.35 v.35 rs449/v.36 1 0 1 1 v.11 v.11 v.11 z v.11 v.11 v.28/rs-232 1 1 0 1 v.28 v.28 v.28 z v.28 v.28 no cable 1 1 1 1 z z z z z z table 4. mxl1543 mode selection z = high impedance. *t3 and r1 share a single ic pin.
evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit 4 _______________________________________________________________________________________ protocol m2 m1 m0 dce/ dte invert t1 t2 t3* r1* r2 r3 t4* r4* not used (default v.11) 000 0 0 v.11 v.11 z v.11 v.11 v.11 z v.10 rs-530a 0 0 1 0 0 v.11 v.10 z v.11 v.10 v.11 z v.10 rs-530 0 1 0 0 0 v.11 v.11 z v.11 v.11 v.11 z v.10 x.21 0 1 1 0 0 v.11 v.11 z v.11 v.11 v.11 z v.10 v.35 1 0 0 0 0 v.28 v.28 z v.28 v.28 v.28 z v.28 rs-449/v.36 1 0 1 0 0 v.11 v.11 z v.11 v.11 v.11 z v.10 v.28/rs-232 1 1 0 0 0 v.28 v.28 z v.28 v.28 v.28 z v.28 no cable 1 1 1 0 0 z z zzzzzz not used (default v.11) 000 0 1 v.11 v.11 z v.11 v.11 v.11 v.10 z rs-530a 0 0 1 0 1 v.11 v.10 z v.11 v.10 v.11 v.10 z rs-530 0 1 0 0 1 v.11 v.11 z v.11 v.11 v.11 v.10 z x.21 0 1 1 0 1 v.11 v.11 z v.11 v.11 v.11 v.10 z v.35 1 0 0 0 1 v.28 v.28 z v.28 v.28 v.28 v.28 z rs-449/v.36 1 0 1 0 1 v.11 v.11 z v.11 v.11 v.11 v.10 z v.28/rs-232 1 1 0 0 1 v.28 v.28 z v.28 v.28 v.28 v.28 z no cable 1 1 1 0 1 z z zzzzzz not used (default v.11) 000 1 0 v.11 v.11 v.11 z v.11 v.11 v.10 z rs-530a 0 0 1 1 0 v.11 v.10 v.11 z v.10 v.11 v.10 z rs-530 0 1 0 1 0 v.11 v.11 v.11 z v.11 v.11 v.10 z x.21 0 1 1 1 0 v.11 v.11 v.11 z v.11 v.11 v.10 z v.35 1 0 0 1 0 v.28 v.28 v.28 z v.28 v.28 v.28 z rs-449/v.36 1 0 1 1 0 v.11 v.11 v.11 z v.11 v.11 v.10 z v.28/rs-232 1 1 0 1 0 v.28 v.28 v.28 z v.28 v.28 v.28 z no cable 1 1 1 1 0 z z zzzzzz not used (default v.11) 000 1 1 v.11 v.11 v.11 z v.11 v.11 z v.10 rs-530a 0 0 1 1 1 v.11 v.10 v.11 z v.10 v.11 z v.10 rs-530 0 1 0 1 1 v.11 v.11 v.11 z v.11 v.11 z v.10 x.21 0 1 1 1 1 v.11 v.11 v.11 z v.11 v.11 z v.10 v.35 1 0 0 1 1 v.28 v.28 v.28 z v.28 v.28 z v.28 rs-449/v.36 1 0 1 1 1 v.11 v.11 v.11 z v.11 v.11 z v.10 v.28/rs-232 1 1 0 1 1 v.28 v.28 v.28 z v.28 v.28 z v.28 no cable 1 1 1 1 1 z z zzzzzz table 5. mxl1544/max3175 mode selection z = high impedance. *t3 and r1, and t4 and r4 share ic pins.
jumpers to the corresponding state depending on whether the mode lines are controlled by an exter- nal controller or pin strapped to a known state using tables 7 and 8. invert jumper defaults to logic low. 3) clock/data transmitter input settings: connect the clock/data jumpers to the correspond- ing state using table 9. force the inputs of all unused transmitters low so their corresponding led indicators are off. 4) control transmitter input settings: connect the control jumpers to the corresponding state using table 10. force the inputs of all unused transmitters low so their corresponding led indica- tors are off. 5) sma termination: connect the termination jumpers, depending on whether the signal source needs to be terminated with 50 ? , to the corresponding state using table 11. leave unused transmitter input lines terminated so the line is pulled down in a known state. when using sma termination, avoid connecting ju1, ju2, and ju3 to vcc. 6) power/ground: connect the power and ground jumpers according to the desired operation using table 12. leave ju17 unconnected (open) when measuring the supply current of the chipset. evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit _______________________________________________________________________________________ 5 mode dce/ dte m2 m1 m0 r1 r2 r3 r4 r5 r6 not used (default v.11) 0 000zzzzzz rs530a 0 0 0 1 z z z v.11 v.11 v.11 rs530 0 0 1 0 z z z v.11 v.11 v.11 x.21 0 0 1 1 z z z v.11 v.11 v.11 v.35 0 1 0 0 v.35 v.35 z v.35 v.35 v.35 rs449/v.36 0 1 0 1 z z z v.11 v.11 v.11 v.28/rs232 0 1 1 0 z z zzzz no cable 0 1 1 1 v.11 v.11 v.11 v.11 v.11 v.11 not used (default v.11) 1 000zzzzzz rs530a 1 0 0 1 z z z z v.11 v.11 rs530 1 0 1 0 z z z z v.11 v.11 x.21 1 0 1 1 z z z z v.11 v.11 v.35 1 1 0 0 v.35 v.35 v.35 z v.35 v.35 rs449/v.36 1 1 0 1 z z z z v.11 v.11 v.28/rs232 1 1 1 0 z z zzzz no cable 1 1 1 1 v.11 v.11 v.11 v.11 v.11 v.11 table 6. mxl1344a termination mode selection z = high impedance.
evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit 6 _______________________________________________________________________________________ jumper signal (bus) state function open* logic high (internal pullup in ic). dce/ dte line can be driven by a signal applied to j1-30 (40-pin header). ju13 dce/ dte closed logic low. open* logic high (internal pullup in ic). m2 line can be driven by a signal applied to j1-32 (40-pin header). ju14 m2 closed logic low. open* logic high (internal pullup in ic). m1 line can be driven by a signal applied to j1-34 (40-pin header). ju15 m1 closed logic low. open* logic high (internal pullup in ic). m0 line can be driven by a signal applied to j1-36 (40-pin header). ju16 m0 closed logic low. table 7. chipset protocol mode jumper settings jumper signal state function open logic high (internal pullup in ic). invert can be driven by a signal applied to j1-38 (40-pin header). ju12 invert closed* logic low. table 8. invert mode jumper settings jumper dce/dte state function 1-2 logic high. 2-3 logic low. ju1 rxd/txd open* apply signal to sma connector j5. 1-2 logic high. 2-3 logic low. ju2 rxc/scte open* apply signal to sma connector j4. 1-2 logic high. 2-3 logic low. ju3 txc/ n/a open* apply signal to sma connector j3. table 9. clock/data transmitter input jumper settings *default jumper setting. *default jumper setting. *default jumper setting.
evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit _______________________________________________________________________________________ 7 jumper dce/dte state function 1-2 logic high. 2-3* logic low. ju4 cts/rts open apply signal to j1-14 (40-pin header). 1-2 logic high. 2-3* logic low. ju5 dsr/dtr open apply signal to j1-16 (40-pin header). 1-2 logic high. 2-3* logic low. ju6 dcd/ n/a open apply signal to j1-18 (40-pin header). 1-2 logic high. 2-3* logic low. ju7 ll/ n/a open apply signal to j1-26 (40-pin header). table 10. control transmitter input jumper settings *default jumper setting. jumper dce/dte state function open unterminated ju8 rxd/txd closed* terminated with 50 ? open unterminated ju9 rxc/scte closed* terminated with 50 ? open unterminated ju10 txc/ n/a closed* terminated with 50 ? table 11. termination settings *default jumper setting. jumper name state function open db25 cable shield disconnected from signal ground. ju11 shield closed* db25 cable shield shorted to signal ground. open led anode is floating. ju17 led anode closed* led anode is connected to vcc. table 12. power/ground jumper settings *default jumper setting.
evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit 8 _______________________________________________________________________________________ tp2 c2 1 f 28 27 26 25 c4 4.7 f c2+ c2- v ee gnd t10uta t10utb t20uta t20utb t30uta/r1ina t30utb/r1inb r2ina r2inb r3ina r3inb cl- cl+ v dd v cc t1in t2in t3in r1out r2out r3out m0 m1 m2 dce/dte 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 rxda/txda rxda txda c1 1 f c3 4.7 f c5 1 f tp1 vcc vcc rxd/txd ju1 1 2 3 j5 ju8 j1-2 vcc j1-4 1 2 3 1 2 3 ju9 r2 49.9 ? ju2 j4 vcc rxd txd rxc/scte rxc scte txc/n/a j1-6 ju10 ju3 j3 txc n/a n/a/txc n/a txc scte/rxc j1-8 j1-10 scte rxc txd/rxd j1-12 txd rxd vcc c10 1 f c9 1 f vcc cts/rts ju4 1 2 3 1 2 3 1 2 3 1 2 3 vcc vcc vcc ju5 ju6 ju7 j1-14 j1-16 j1-18 j1-26 j1-20 j1-22 j1-24 j1-28 j1-36 j1-34 j1-32 j1-30 dce/dte m2 m1 m0 ju16 ju15 ju14 ju13 dsr/dtr dcd/n/a n/a/dcd dtr/dsr rts/cts ll/n/a n/a/ll v cc 1 v dd 2 3 t1in 4 t2in 5 6 7 8 9 10 11 12 13 14 t3in r1out r2out r3out t4in r4out m0 m1 m2 dce/dte v ee gnd t1outa t1outb t2outa t2outb t3outa/r1ina t3outb/r1inb r2inb r2ina r3ina r3inb t4outa/r4ina invert 28 27 26 25 24 23 22 21 20 19 18 17 16 15 j2-4 j2-19 j2-20 j2-23 j2-8 j2-10 j2-6 j2-22 j2-5 j2-13 j2-18 j1-38 ju12 c11 1 f r1 49.9 ? r3 49.9 ? mxl1543 u1 mxl1544 max3175 u2 figure 1a. mxl1543 ev kit schematic (sheet 1 of 3)
evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit _______________________________________________________________________________________ 9 j1-23 j1-25 j1-27 j1-29 j1-31 j1-33 j1-35 j1-37 j1-39 j1-40 j1-1 j1-3 j1-5 j1-7 j1-9 j1-11 j1-13 j1-15 j1-17 j1-19 j1-21 ju11 j2-1 j2-7 j2-25 j2-21 j2-2 j2-14 j2-24 j2-11 j2-15 j2-12 j2-17 j2-9 j2-3 j2-16 txda/rxda txdb/rxdb 1 21 24 23 22 20 19 17 18 15 16 10 9 7 6 4 5 13 12 11 8 3 14 2 c8 100pf c7 100pf c6 100pf latch gnd gnd r3c r2c r1c r1a r1b r2a r2b r3a r3b r4a r4b r5a r5b r6a r6b dce/dte m2 m1 m0 v cc v ee c13 1 f vcc c16 0.1 f c17 47 f 16v + vcc gnd c12 1 f scteb/rxcb sctea/rxca txcb/txcb txca/txca rxcb/scteb rxca/sctea rxdb/txdb txdb rxdb txda rxda scteb rxcb sctea rxca txcb txcb txca txca rxcb scteb rxca sctea rxdb txdb mxl1344 u3 figure 1a. mxl1543 ev kit schematic (sheet 2 of 3)
evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit 10 ______________________________________________________________________________________ d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d15 d16 vcc c14 0.1 f r4 1.5k ? r5 1.5k ? r6 1.5k ? r7 1.5k ? r8 1.5k ? r9 1.5k ? r10 1.5k ? r11 1.5k ? r12 1.5k ? r13 1.5k ? r14 1.5k ? r15 1.5k ? r16 1.5k ? r17 1.5k ? r18 1.5k ? r19 1.5k ? vcc c15 0.1 f 20 18 16 14 12 9 7 5 3 1, 10, 19 17 15 13 11 8 6 4 2 u4 74hc240dw rxd/txd rxc/scte txc/n/a cts/rts dsr/dtr dcd/n/a n/a/txc txd/rxd scte/rxc n/a/dcd dtr/dsr rts/cts dce/dte m2 m1 m0 20 18 16 14 12 9 7 5 3 1, 10, 19 17 15 13 11 8 6 4 2 u5 74hc240dw vcc ju17 ledvcc figure 1b. mxl1543 ev kit schematic (sheet 3 of 3)
evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit ______________________________________________________________________________________ 11 figure 2. mxl1543 ev kit component placement guide component side 1.0" figure 3. mxl1543 ev kit pc board layout?omponent side 1.0" figure 4. mxl1543 ev kit pc board layout?nner layer 2 (gnd) 1.0"
evaluates: mxl1543/mxl1544/max3175/mxl1344a mxl1543 evaluation kit 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. 12 ____________________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. mxl1543 ev kit pc board layout?nner layer 3 (vcc) 1.0" figure 6. mxl1543 ev kit pc board layout?older side 1.0"

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