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LXD974A demo board for 10/100 applications development kit manual january 2001 as of january 15, 2001, this document replaces the level one document order number: 249104-001 LXD974A demo board for 10/100 applications .
LXD974A demo board for 10/100 applications development kit manual information in this document is provided in connection with intel ? products. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. except as provided in intel?s terms and conditions of sale for such products, inte l assumes no liability whatsoever, and intel disclaims any express or implied warranty, relating to sale and/or use of intel products including liabil ity or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property righ t. intel products are not intended for use in medical, life saving, or life sustaining applications. intel may make changes to specifications and product descriptions at any time, without notice. designers must not rely on the absence or characteristics of any features or instructions marked ? reserved ? or ? undefined. ? intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them. the LXD974A may contain design defects or errors known as errata which may cause the product to deviate from published specific ations. current characterized errata are available on request. contact your local intel sales office or your distributor to obtain the latest specifications and before placing your product o rder. copies of documents which have an ordering number and are referenced in this document, or other intel literature may be obtaine d by calling 1-800-548-4725 or by visiting intel's website at http://www.intel.com. copyright ? intel corporation, 2001 *third-party brands and names are the property of their respective owners.
LXD974A demo board for 10/100 applications development kit manual iii contents 1.0 general description .................................................................................................. 5 1.1 features ................................................................................................................ 5 2.0 setup procedures ...................................................................................................... 7 2.1 hardware setup .................................................................................................... 7 2.1.1 twisted-pair ......................................................................................... 7 2.1.2 fiber modules....................................................................................... 7 2.1.2.1 external blue-wire connections............................................. 8 2.2 test setup ............................................................................................................. 8 3.0 jumpers .......................................................................................................................10 3.1 twisted-pair evaluation.......................................................................................10 3.2 fiber evaluation .................................................................................................11 4.0 switches .......................................................................................................................12 4.1 operating characteristics....................................................................................12 4.2 advertisement configurations .............................................................................13 5.0 led indicators ...........................................................................................................15 6.0 bill of materials and board schematics ..........................................................16 figures 1 LXD974A demo board.......................................................................................... 6 2 basic test setup .................................................................................................. 9 3 LXD974A .............................................................................................................18 4 leds....................................................................................................................19 5 ports 0 and 1 .......................................................................................................20 6 port 0 analog circuitry ........................................................................................21 7 port 1 analog circuitry ........................................................................................22 8 ports 2 and 3 .......................................................................................................23 9 port 2 analog circuitry ........................................................................................24 10 port 3 analog circuitry ........................................................................................25 11 led resistor packs ............................................................................................26
iv LXD974A demo board for 10/100 applications development kit manual tables 1 external blue-wire connections for fiber module operation ............................... 8 2 LXD974A jumper settings for twisted-pair operation....................................... 10 3 LXD974A jumper settings for fiber module operation...................................... 11 4 s1 switch settings .............................................................................................. 12 5 s2 switch settings .............................................................................................. 13 6 s3 switch settings .............................................................................................. 13 7 advertised configurations when auto-negotiation enabled ............................... 14 8 global led descriptions ..................................................................................... 15 9 port led descriptions........................................................................................ 15 10 lxt974a bill of materials.................................................................................... 16
demo board for 10/100 applications ? LXD974A development kit manual 5 1.0 general description the LXD974A demo board is a four-port 10/100 mbps ethernet media access unit (mau) that demonstrates all of the standard mii features of the lxt974a fast ethernet quad transceiver. the LXD974A is designed to maximize return loss and emi performance. the LXD974A provides a working platform for evaluation of the lxt974a fast ethernet 10/100 quad transceiver in 10base-t and/or 100base-tx/fx applications. a pseudo-ecl (pecl) interface is provided on all four ports for fiber operation. the LXD974A demo board allows system designers to test 10 mbps and 100 mbps link performance, auto-negotiation, and register functionality prior to board prototyping. refer to the latest lxt974a/975a quad fast ethernet transceiver data sheet for device functionality and specifications. 1.1 features ? four independent ieee 802.3-compliant 10base-t or 100base-tx ports. quick setup, ease of use, and clear visibility of application settings for: ? emi compliant reference designs. ? complete system demonstration. ? individual circuit isolation. auto-negotiation protocol compliant with legacy systems that do not support auto-negotiation. led indicators for major functions. configurable through mii serial port or via external control pins. standard half-duplex or full-duplex operation at 10 or 100 mbps. 100base-fx fiber-optic capable.
LXD974A ? demo board for 10/100 applications 6 development kit manual figure 1. LXD974A demo board fiber modules mii interface s1 s2 mddis pwrdn trste3 trste2 trste1 trste0 fde autoena mii_mdo mii_md1 bypscr cfg_2 cfg_1 cfg_0 fde_fx test switches leds col spd hd link rx tx led_2 led_1 led_0 lxt974a demo rev b2 twisted-pair interface lxt974a 18 1 s3 add4 add3 add2 18 18 18 18 p1 vcc gnd s4 reset fiber modules
demo board for 10/100 applications ? LXD974A development kit manual 7 2.0 setup procedures this document describes typical demo board set-up procedures for a 10base-t, 100base-tx, or 100base-fx environment and provides basic hardware set-up information, bill of materials, and board schematics. gerber files for board layout are available by contacting your local sales office (see the back page for listings). the LXD974A demo board is populated with all of the ic components needed for twisted-pair evaluation. however, the following additional equipment is also required: smartbits advanced multi-port performance test box configured with firmware version 4.39 or newer. pc with smart windows (version 6.0 or newer) installed. 5v dc power supply. four mii cables. four external nic cards. four category 5 unshielded twisted-pair (utp) cables. fiber-optic transceiver modules (hfbr-5103), fiber-optic cable, and external jumpers are required for 100base-fx evaluation. 2.1 hardware setup 2.1.1 twisted-pair the following set-up procedure is recommended for standard twisted-pair evaluation. 1. set the jumpers as shown in table 2 . 2. set switch s1, s2, and s3 according to table 4 through table 6 . 3. connect a +5v dc power supply to p1 vcc. connect ground to p1 gnd. 4. connect all four ports of the LXD974A to the smartbits test box via mii connector/cables. 5. connect the twisted-pair ports to external nic cards via utp cables. each nic card plugs directly into the smartbits test box. 6. with the demo board appropriately configured, apply power to the LXD974A and press reset switch s4. 7. proceed with evaluation as desired. 2.1.2 fiber modules there are four combination twisted-pair/fiber ports provided on the lxt974a. for 100base-fx evaluation, fiber-optic transceiver module (hfbr-5103) and four external blue-wire connections are required per port. remove twisted-pair transformer. solder fiber modules on board.
LXD974A ? demo board for 10/100 applications 8 development kit manual cut the required circuit traces and make the external blue-wire connections as shown in table 1 . set the fiber module jumpers as shown in table 3 on page 11 . 2.1.2.1 external blue-wire connections seventeen cuts and sixteen external blue-wire connections are required to set up the combination ports for fiber operation. cut circuit traces as required to remove t1, r38, r39, r40, r41, r59, r60, r61, r62, r100, r101, r102, r103, r121, r122, r123, and r124. make the external blue-wire connections using 24 awg solid wire from the LXD974A test points to the t1 transformer pads as shown in table 1 . tp236 - tp239 represent port 0, tp240 - tp243 represent port 1, tp244 - tp247 represent port 2, and tp248 - tp251 represent port 3. refer to figure 6 on page 21 (port 0), to figure 7 on page 22 (port 1), to figure 9 on page 24 (port 2), and to figure 10 on page 25 (port 3) for schematics of the external blue-wire circuitry. 2.2 test setup figure 2 shows a typical test setup for standard operation of the LXD974A. the LXD974A plugs into a smartbits advanced multi-port performance test box via four standard 40-pin mii connectors, that are included on the board. the mii cables are not included. four external nic cards directly connect to the smartbits test box and plug into the LXD974A through rj45 connections. each port ? s operating speed can be set individually for evaluation of 10 mbps, 100 mbps, and auto-negotiation capabilities using all four ports. table 1. external blue-wire connections for fiber module operation LXD974A test points t1 pads tp236 1 tp237 3 tp238 4 tp239 5 tp240 6 tp241 8 tp242 9 tp243 10 tp244 11 tp245 13 tp246 14 tp247 15 tp248 16 tp249 18 tp250 19 tp251 20
demo board for 10/100 applications ? LXD974A development kit manual 9 figure 2. basic test setup rs-232 utp utp rj45s mii connectors smartbits advanced multi-port performance tester mii cable ) LXD974A external nic cards smart windows
LXD974A ? demo board for 10/100 applications 10 development kit manual 3.0 jumpers 3.1 twisted-pair evaluation jp50 and jp51 must be jumpered on the LXD974A for the smartbits test box to access the mii management registers inside the lxt974a. mii registers can be accessed for each port by setting bits add<1:0> of the phy address with the port number. refer to the lxt974a/975a data sheet for specific register definitions and functions . for standard 10base-t/100base-tx operation, leave all other jumpers open, as shown in table 2 . . table 2. LXD974A jumper settings for twisted-pair operation port jumper description jumper setting 0 jp50 mdc. management data clock . clock for the mdio serial channel. maximum frequency is 2.5 mhz. jumpered jp51 mdio. management data i/o. bidirectional serial data channel for phy/sta communication. jumpered jp1 mii vcc. power supply. open 1 jp52 mdc. management data clock. clock for the mdio serial channel. maximum frequency is 2.5 mhz. open jp53 mdio. management data i/o. bidirectional serial data channel for phy/sta communication. open jp2 mii vcc. power supply. open jp8 sd pullup. signal detect, connects an 82 ? resistor to signal detect pin. open jp69 sd connect. selects tp or fx mode. open 2 jp54 mdc. management data clock. clock for the mdio serial channel. maximum frequency is 2.5 mhz. open jp55 mdio. management data i/o. bidirectional serial data channel for phy/sta communication. open jp13 mii vcc. power supply. open
demo board for 10/100 applications ? LXD974A development kit manual 11 3.2 fiber evaluation for 100base-fx evaluation, install the fiber module jumpers as shown in table 3 . 3 jp56 mdc. management data clock. clock for the mdio serial channel. maximum frequency is 2.5 mhz. open jp57 mdio. management data i/o. bidirectional serial data channel for phy/sta communication. open jp14 mii vcc. power supply. open jp20 sd pullup. signal detect, connects an 82 ? resistor to signal detect pin. open jp71 sd connect. selects tp or fx mode. open table 2. LXD974A jumper settings for twisted-pair operation port jumper description jumper setting table 3. LXD974A jumper settings for fiber module operation port jumper description jumper setting 1 jp8 sd pullup. signal detect, connects an 82 ? resistor to signal detect pin. jumpered jp69 sd connect. selects tp or fx mode. jumpered 3 jp20 sd pullup. signal detect, connects an 82 ? resistor to signal detect pin. jumpered jp71 sd connect. selects tp or fx mode. jumpered
LXD974A ? demo board for 10/100 applications 12 development kit manual 4.0 switches 4.1 operating characteristics three switches configure operating characteristics of the LXD974A. each switch can be set manually by toggling the switch either to 1 or 0. table 4 through table 6 show the description and recommended setting for each switch. for standard operation, set switch s1, s2, and s3 according to these tables. table 4. s1 switch settings switch signal recommended setting description 1 test 0 test - test mode, for internal use only. 2fde_fx 0 full-duplex enable (fx ports) - selects full-duplex in fx mode. 1 = enables half-duplex operation on all ports set for fx mode. 0 = enables full-duplex operation on all ports set for fx mode. 3cfg_0 0 configuration control 0 - selects operating speed. 1 = 100 mbps. 0 = 10 mbps. 4cfg_1 0 configuration control 1 - enables 10mbps link test. 1 = 10 mbps link test disabled. 0 = 10 mbps link test enabled. 5cfg_2 0 configuration control 2 - selects either tp or fx interface. 1 = fx operation. 0 = tp operation. 6 bypscr 0 bypass scrambler - enables scrambler operation. 1 = scrambler bypassed. 0 = scrambler enabled. 7mii_md1 0 mii mode select - selects operating mode of mii. 1 = selects 5b symbol mode. 0 = standard 4b operating mode. 8mii_md0 0 mii mode select - selects operating mode of mii. 1 = selects 5b symbol mode. 0 = standard 4b operating mode.
demo board for 10/100 applications ? LXD974A development kit manual 13 4.2 advertisement configurations when auto-negotiation is enabled, cfg_1, cfg_2, and fde are used to configure advertising characteristics of LXD974A. table 7 shows how to set the various configurations. table 5. s2 switch settings switch signal recommended setting description 1 autoena 1 auto-negotiation enable - enables auto-negotiation. 1 = enable auto-negotiation. 0 = disable auto-negotiation. 2fde 0 full duplex enable (all ports) - enables full duplex operation. 1 = full-duplex operation on all ports. 0 = half-duplex operation on all ports. 3trste0 0 tristate port 0 - enables tristate on port 0. 1 = force tristate to isolate port. 0 = normal operation. 4trste1 0 tristate port 1 - enables tristate on port 1. 1 = force tristate to isolate port. 0 = normal operation. 5trste2 0 tristate port 2 - enables tristate on port 2. 1 = force tristate to isolate port. 0 = normal operation. 6trste3 0 tristate port 3 - enables tristate on port 3. 1 = force tristate to isolate port. 0 = normal operation. 7 pwrdn 0 power down - enables power down mode. 1 = forces power down mode. 0 = normal operation. 8mddis 0 management disable - management control of the lxt974a. 1 = the hardware control interface provides continual control of register bits. 0 = the hardware control interface provides only initial default values of register bits. table 6. s3 switch settings switch signal setting description 1 add2 0 address <4:2> - sets upper three bits of phy address. 2 add3 0 3 add4 0 4 n/c - n/c
LXD974A ? demo board for 10/100 applications 14 development kit manual table 7. advertised configurations when auto-negotiation enabled desired configuration cfg_2 cfg_1 fde advertise all 0 0 ignore advertise 100 hd 1 0 0 advertise 100 hd/fd 1 0 1 advertise 10 hd 0 1 0 advertise 10 hd/fd 0 1 1 advertise 10/100 hd 1 1 0
demo board for 10/100 applications ? LXD974A development kit manual 15 5.0 led indicators there are 38 status leds on the demo board. the lxt974a provides six serial led outputs and three programmable leds per port. led indicators and descriptions are listed in table 8 and table 9 . note: programmable leds (led_0, led_1, led_2) are set in default mode and may be programmed to indicate optional conditions. refer to lxt974a data sheet for led programming options. table 8. global led descriptions label ref des description mdint d1 management data interrupt. indicates status change to lxt974a. pwr d77 power. indicates power to LXD974A demo board. table 9. port led descriptions label reference designators description port 0port 1port 2port 3 col d21 d15 d9 d3 collision. indicates collision on the respective port. spd d22 d16 d10 d4 speed. indicates 100 mbps operation. hd d23 d17 d11 d5 duplex. indicates half-duplex on the respective port. link d24 d18 d12 d6 link. indicates connection on the respective port. rx d25 d19 d13 d7 receive. indicates received data on the respective port. tx d26 d20 d14 d8 transmit. indicates transmitted data on the respective port. led_0 d27 d32 d35 d38 led0. indicates transmitter is active. led_1 d28 d31 d34 d37 led1. indicates receiver is active. led_2 d27 d30 d33 d36 led2. indicates link is up.
LXD974A ? demo board for 10/100 applications 16 development kit manual 6.0 bill of materials and board schematics table 10. lxt974a bill of materials item qty reference designator description 1 1 c1 100 uf tantalum 21 c2 1.0 uf tantalum 31 c3 22 uf tantalum 456 c4, c5, c10, c11, c12, c13, c14, c15, c16, c17, c41, c42, c43, c44, c45, c46, c47, c48, c49, c50, c51, c52, c53, c54, c69, c70, c72, c73, c74, c75, c76, c80, c102, c103, c105, c106, c107, c108, c109, c210, c211, c212, c213 0.1 uf 519 c78, c79, c89, c90, c100, c101, c111, c112, c159, c160, c161, c162, c163, c164, c165, c166, c167, c168, c169 .001 uf 6 4 c71, c82, c93, c104 10 uf 7 1 c208 .01 uf 8 1 c209 10 uf 9 2 c214, c215 47 uf 10 14 d1, d3, d8, d9, d14, d15, d20, d21, d26, d29, d32, d35, d38, d77 led red 11 1 d2 diode 12 16 d4, d5, d7, d10, d11, d13, d16, d17, d19, d22, d23, d25, d28, d31, d34, d37 led yellow 13 8 d6, d12, d18, d24, d27, d30, d33, d36 led green 14 2 fb2, fb1 ferrite bead 15 4 fm1, fm2, fm3, fm4 hp fiber module 16 20 jp1, jp2, jp3, jp8, jp13, jp14, jp15, jp20, jp50, jp51, jp52, jp53, jp54, jp55, jp56, jp57, jp68, jp69, jp70, jp71 jumpers 17 1 j1 connector rj45 18 1 j3 con2 19 4 l3, l8, l11, l15 320 nh 20 8 l1, l2, l5, l6, l10, l13, l14 1 uh 21 1 p1 termblk 22 4 p4, p5, p6, p7 mii 40-pin connector 23 2 r1, r261 330 24 1 r2 22.1 k ? 1% 25 77 r3, r4, r7, r8, r9, r10, r11, r12, r13, r14, r15, r16, r17, r18, r19, r20, r21, r22, r23, r24, r25, r26, r40, r41, r42, r43, r44, r45, r46, r47, r61, r62, r63, r64, r65, r66, r67, r68, r69, r70, r71, r72, r73, r74, r75, r76, r77, r78, r79, r80, r81, r82, r83, r84, r85, r86, r87, r88, r102, r103, r104, r105, r106, r107, r108, r109, r123, r124, r125, r126, r127, r128, r129, r130, r321, r322, r323 50 ? 1%
demo board for 10/100 applications ? LXD974A development kit manual 17 26 2 r5, r6 10k ? 27 8 r38, r39, r59, r60, r100, r101, r121, r122 200 ? 1% 28 20 r27, r29, r30, r34, r35, r48, r50, r51, r55, r56, r89, r91, r92, r96, r97, r110, r112, r113, r117, r118 82 ? 29 20 r28, r31, r32, r33, r37, r49, r52, r53, r54, r58, r111, r114, r115, r116, r120 130 ? 30 40 r262, r263, r264, r265, r266, r267, r268, r269, r270, r271, r272, r273, r274, r275, r276, r277, r278, r279, r280, r281, r282, r283, r284, r285, r286, r297, r288, r289, r290, r291, r292, r293, r294, r295, r296, r297, r298, r299, r300, r301, 22 ? 31 36 r200, r201, r202, r203, r204, r205, r206, r207, r208, r209, r210, r211, r212, r213, r214, r215, r216, r217, r218, r219, r220, r221, r222, r223, r224, r225, r226, r227, r228, r229, r230, r231, r240, r241, r242, r243 220 ? 32 19 r302, r303, r304, r305, r306, r307, r308, r309, r310, r311, r312, r313, r314, r315, r316, r317, r318, r319, r320 3.3 k ? 33 2 s1, s2 switch dip-8 34 1 s3 switch dip-4 35 1 s4 switch spdt 36 1 u1 quad transceiver lxt974a 37 1 u4 ic - 74hct08 38 1 u5 ic - 74hct04 39 3 u6, u7, u8 ic - 74hct164 40 8 u9, u10, u11, u12, u13, u14, u15, u16 ic - 74abt244 41 1 t1 quad transformer halo tg110-s460nx 42 1 y1 crystal oscillator - 25 mhz table 10. lxt974a bill of materials item qty reference designator description
LXD974A ? demo board for 10/100 applications 18 development kit manual figure 3. LXD974A global signals b1 lxt974a emc b friday, august 28, 1998 title size docu me nt num b er rev date: s3 sw dip-4 1 2 3 4 8 7 6 5 j3 con2 1 2 r3 50 1% r4 50 1% r2 22.1k 1% y1 25mhzcrystal osc nc 1 gnd 7 ou t 8 vcc 14 r5 10k r6 10k u4a 74hct08 1 2 3 u5a 74hct04 1 2 u4b 74hct08 4 5 6 u5b 74hct04 3 4 d2 dio de c1 100uf tantalum c2 1.0uf tantalum tp13 tp14 tp18 tp15 tp16 tp17 tp208 tp209 tp210 tp211 tp218 d77 led rd r261 33 0 fb1 ferrite bead s4 sw spd t 2 1 3 p1 termblk r310 3.3k r3 11 3.3k r312 3.3k r3 13 3.3k r3 14 3. 3 k r315 3.3k r3 16 3.3k r317 3.3k r3 18 3.3 k r319 3.3k r320 3.3k c20 9 10u fd. c20 8 .01ufd. r304 3.3k r305 3.3k r306 3.3k r307 3.3k r308 3.3k r309 3.3k r30 3 3.3 k r302 3.3k u1e lxt974a add2 18 mddis 100 add3 19 autoen a 111 mii_md0 10 1 add4 20 pwrdn 102 ledclk 15 mii_md1 112 trste3 10 3 leddat 16 trste2 104 ledena 17 bypscr 11 3 trste1 105 trste0 106 fd e 11 0 cf g_ 2 114 cf g_ 1 115 cf g_ 0 116 nc0 11 9 nc1 120 fde_fx 117 clk25m 118 mdio 97 md int 98 mdc 99 rb ias 14 0 re set 109 te st 15 9 tp12 r1 330 d1 led rd s1 sw dip-8 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 s2 sw dip-8 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 r321 50 1 % r322 50 1% reset gnd vc c gnd vcc vcc gnd vcc gnd vcc vcca gnda gnda gnda gnda gnd vcc vcca gnd vcc gnd gnda ledena leddat ledclk mdio md c vcc diff probe receptacle vcc di stribute mdint vcc
demo board for 10/100 applications ? LXD974A development kit manual 19 figure 4. leds serial leds b1 lxt974a emc b friday, august 28, 1998 ti tle size docum ent number rev date: u4c 74hct08 9 10 8 u5c 74hct04 5 6 u8 74hct164 a 1 b 2 clk 8 clr 9 qa 3 qb 4 qc 5 qd 6 qe 10 qf 11 qg 12 qh 13 u7 74hct164 a 1 b 2 clk 8 clr 9 qa 3 qb 4 qc 5 qd 6 qe 10 qf 11 qg 12 qh 13 u6 74hct164 a 1 b 2 clk 8 clr 9 qa 3 qb 4 qc 5 qd 6 qe 10 qf 11 qg 12 qh 13 d26 led rd d20 led rd d14 led rd d9 led rd d21 led rd d25 led ylw d22 led ylw d23 led ylw d19 led ylw d17 led ylw d16 led ylw d13 led ylw d4 led ylw d5 led ylw d7 led ylw d3 led rd d10 led ylw d24 led gr d18 led gr d12 led gr d6 led gr r206 220 220 r207 r209 220 r213 220 r214 220 220 r216 r217 220 r218 22 0 r219 220 r220 22 0 r221 220 r222 22 0 22 0 r202 220 r200 r201 220 r204 22 0 r203 220 d11 led ylw 220 r208 r210 22 0 r211 220 220 r215 d15 led rd r212 22 0 220 r223 d8 led rd r205 220 r323 50 1% rx1 tx1 co l0 spd0 fd0 link0 rx0 tx0 fd2 link2 rx2 tx2 co l1 spd1 fd1 link1 spd2 co l2 tx3 rx3 lin k 3 fd3 spd3 co l3 v cc vcc vcc ledclk leddat ledena vcc
LXD974A ? demo board for 10/100 applications 20 development kit manual figure 5. ports 0 and 1 dig ports 0&1 b1 lxt974a emc b friday, august 28, 1998 title size document number rev dat e: r1 3 50 1% r1 5 50 1% r16 50 1% r9 50 1% r12 50 1% p4 mii 40 pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 r11 50 1% p5 mii 40 pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 r23 50 1% r22 50 1% r20 50 1% r19 50 1% r17 50 1% r1 8 50 1% r21 50 1% r25 50 1% r26 50 1% jp2 jumper jp1 jumper r24 50 1% r8 50 1% r10 50 1% r14 50 1% r7 50 1% d29 led rd d28 led ylw d30 led gr d27 led gr u10 74abt244 1a1 2 1a2 4 1a3 6 1a4 8 2a1 11 2a2 13 2a3 15 2a4 17 1g 1 2g 19 1y1 18 1y2 16 1y3 14 1y4 12 2y1 9 2y2 7 2y3 5 2y4 3 u12 74abt244 1a1 2 1a2 4 1a3 6 1a4 8 2a1 11 2a2 13 2a3 15 2a4 17 1g 1 2g 19 1y1 18 1y2 16 1y3 14 1y4 12 2y1 9 2y2 7 2y3 5 2y4 3 u11 74abt244 1a1 2 1a2 4 1a3 6 1a4 8 2a1 11 2a2 13 2a3 15 2a4 17 1g 1 2g 19 1y1 18 1y2 16 1y3 14 1y4 12 2y1 9 2y2 7 2y3 5 2y4 3 u9 74abt244 1a1 2 1a2 4 1a3 6 1a4 8 2a1 11 2a2 13 2a3 15 2a4 17 1g 1 2g 19 1y1 18 1y2 16 1y3 14 1y4 12 2y1 9 2y2 7 2y3 5 2y4 3 tp20 tp22 tp23 tp24 tp25 tp26 tp19 tp29 tp32 tp34 tp31 tp30 tp27 tp28 tp33 tp36 tp37 tp38 tp39 tp40 tp42 tp45 tp43 tp46 tp49 tp47 tp50 tp44 tp48 tp21 tp35 tp41 jp52 jp53 jp50 jp51 r262 22 r263 22 r264 22 r265 22 r266 22 r267 22 r268 22 r269 22 r270 22 r271 22 d32 led rd d31 led ylw r272 22 r279 22 r278 22 r277 22 r273 22 r274 22 r275 22 r276 22 r280 22 r281 22 u1a lxt974a tpip0 151 tpin0 152 tpop0 154 tpon0 157 rxd0_3 23 rxd0_2 24 rxd0_1 25 rxd0_0 26 rx_dv0 27 sd0 158 rx_c lk0 28 led 0_ 0 11 rx_er0 29 led 0_ 1 12 tx_er0 30 led 0_ 2 13 tx_c lk0 31 tx_en0 32 txd0_0 33 txd0_1 34 txd0_2 35 txd0_3 36 col0 37 crs0 38 u1b lxt974a tpip1 14 2 tpin1 14 3 tpop1 14 5 tpon1 14 8 rxd1_3 42 rxd1_2 43 rxd1_1 44 rxd1_0 45 rx_dv1 46 sd1 14 9 rx_c lk1 47 led1_0 8 rx_er1 48 led1_1 9 tx_er1 49 led1_2 10 nc 41 tx_ clk1 50 tx_en1 51 txd1_0 52 txd1_1 53 txd1_2 54 txd1_3 55 col1 57 crs1 58 gnd 56 mdi o md c gnd vcc gnd gnd vcc gnd gnd vcc vcc gnd gnd tp on0 tp op0 tpin0 tpip0 sd0 sd1 tpon1 tpop1 tpin1 tpip1 led0_2 led0_1 led0_0 led1_2 led 1_ 0 mdio mdc led1_1
demo board for 10/100 applications ? LXD974A development kit manual 21 figure 6. port 0 analog circuitry tp port 0 b1 lxt974a emc b friday, august 28, 1998 title s ize document number rev date: l2 1uh l1 1u h c7 3 0. 1u f c70 0.1uf r31 130 r35 82 r37 130 r33 130 r32 13 0 r30 82 r27 82 r29 82 c74 0.1uf r34 82 c75 0.1uf c71 10uf + c69 0.1uf c72 0.1uf fm1 hp fiber mod rd 2 rd 3 sd 4 td 7 td 8 r46 50 1% c79 .001uf r28 130 r45 50 1% r47 50 1% r44 50 1% r43 50 1% r42 50 1% r40 50 1% c78 .001uf jp3 l3 320nh tp51 tp236 tp237 tp238 tp239 jp68 c210 0.1uf j1a rjnoled 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 fb2 ferrite bead r38 200 1% r41 50 1 % r39 200 1% t1a tg 110- s460nx 40 1 38 37 2 36 3 4 5 c76 0.1uf gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd vcc vcc vcc vcc vcc vcc_ct gnda vcc_ct gnda tpin0 sd0 tpip0 tpon0 tpop0 this cap dependant on design optional external jumpered connections for fiber module port 0
LXD974A ? demo board for 10/100 applications 22 development kit manual figure 7. port 1 analog circuitry tp port 1 b1 lxt974a emc b friday, august 28, 1998 title size document number rev dat e: l6 l5 1uh c84 0.1uf r52 130 r56 82 r5 8 130 r54 13 0 r51 82 r48 82 r50 82 c85 0.1uf c87 0.1uf r55 82 c82 10uf + c83 0.1uf r67 50 1% c90 .001uf r49 13 0 r66 50 1% r68 50 1 % r65 50 1% r64 50 1% r63 50 1% r61 50 1% r62 50 1% r60 200 1% r59 200 1% c89 .001uf jp8 j1b rj nol ed 8 16 7 15 6 14 5 13 4 12 3 11 2 10 1 9 tp240 tp241 tp242 tp24 3 jp69 r53 130 t1b tg110-s460nx 35 6 33 32 7 31 8 9 10 tp56 c86 0.1uf 1u h fm2 hp fiber mod rd 2 rd 3 sd 4 td 7 td 8 c211 0.1uf l8 320nh vcc gnd gnd gnd gnd gnda vcc vcc vcc gnd c80 0.1uf gnd gnd c81 0.1 uf gnd gnd gnd gnd gnd gnd vcc_ct gnda tpon1 tpop1 tpin1 tpip1 sd1 this cap dependant on design optional external jumpered connections for fiber module port 1
demo board for 10/100 applications ? LXD974A development kit manual 23 figure 8. ports 2 and 3 dig ports 2&3 b1 lxt974a emc b f ri day, augus t 2 8, 19 98 title size document number rev dat e: r7 5 50 1% r7 7 50 1% r7 8 50 1% r7 1 50 1% r72 50 1% r74 50 1% r70 50 1 % r69 50 1% p6 mii 40 pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 r7 3 50 1% p7 mii 40 pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 r85 50 1% r84 50 1% r82 50 1% r81 50 1% r79 50 1% r80 50 1% r83 50 1% r8 8 50 1% jp13 jumper jp14 jumper r76 50 1% r86 50 1% u13 74abt 244 1a 1 2 1a 2 4 1a 3 6 1a 4 8 2a 1 11 2a 2 13 2a 3 15 2a 4 17 1g 1 2g 19 1y1 18 1y 2 16 1y3 14 1y4 12 2y1 9 2y2 7 2y3 5 2y4 3 u15 74abt244 1a1 2 1a2 4 1a3 6 1a4 8 2a1 11 2a2 13 2a3 15 2a4 17 1g 1 2g 19 1y1 18 1y2 16 1y3 14 1y4 12 2y1 9 2y2 7 2y3 5 2y4 3 d35 led rd d34 led ylw d3 3 led gr u14 74abt244 1a1 2 1a2 4 1a3 6 1a 4 8 2a1 11 2a2 13 2a3 15 2a4 17 1g 1 2g 19 1y1 18 1y2 16 1y3 14 1y 4 12 2y1 9 2y2 7 2y3 5 2y4 3 r87 50 1% u16 74abt 244 1a1 2 1a2 4 1a3 6 1a4 8 2a1 11 2a2 13 2a3 15 2a4 17 1g 1 2g 19 1y 1 18 1y 2 16 1y 3 14 1y 4 12 2y 1 9 2y 2 7 2y 3 5 2y 4 3 tp 63 tp 62 tp 64 tp 65 tp 66 tp 67 tp 68 tp 61 tp90 tp88 tp91 tp86 tp85 tp87 tp89 tp92 tp71 tp69 tp72 tp75 tp73 tp76 tp70 tp74 jp56 jp57 jp54 jp55 r282 22 r283 22 r284 22 r285 22 r286 22 r287 22 r288 22 r289 22 r2 90 22 r2 91 22 d38 led rd d37 led ylw d3 6 led gr tp82 tp84 tp81 tp80 tp79 tp78 tp83 r292 22 r298 22 r297 22 r2 93 22 r2 96 22 r295 22 r294 22 r299 22 tp77 r30 0 22 r301 22 u1c lxt974a tpip2 132 tpin2 133 tpop2 135 tpon2 138 rxd2_3 61 rxd2_2 62 rxd2_1 63 rxd2_0 64 rx_dv2 65 sd2 139 rx_clk2 66 led2_0 4 rx_er2 67 led2_1 5 tx_er2 68 led2_2 6 tx_clk2 69 tx_en2 70 txd2_0 71 txd2_1 72 txd2_2 73 txd2_3 74 col2 75 crs2 76 u1d lxt974a tpip3 123 tpin3 124 tpop3 126 tpon3 129 col3 93 rxd3_3 79 crs3 94 rxd3_2 80 rxd3_1 81 rxd3_0 82 rx_dv3 83 sd3 130 rx_clk3 84 led3_0 1 rx_er3 85 led3_1 2 tx_er3 86 led3_2 3 tx_clk3 87 tx_en 3 88 txd3 _0 89 txd3 _1 90 txd3_ 2 91 txd3 _3 92 mdio mdc gnd gnd vcc gnd gnd gnd vcc gnd vcc vcc tpon2 tpop2 tpin2 tpip2 sd2 sd3 tpon3 tpip3 tpop3 tpin3 led2_2 led2_1 led2_0 led3_1 led3_2 led3_0 mdio md c to sheet 7:
LXD974A ? demo board for 10/100 applications 24 development kit manual figure 9. port 2 analog circuitry tp port 2 b1 lxt974a emc b friday, august 28, 1998 title size document number rev dat e: l10 1uh l 9 1uh c95 0.1uf c92 0.1uf r93 130 r97 82 r99 130 r95 13 0 r94 130 r92 82 r89 82 r91 82 c96 0.1uf c98 0.1uf r96 82 c97 0.1uf c93 10uf + c91 0.1uf c94 0.1 uf fm3 hp fiber mod rd 2 rd 3 sd 4 td 7 td 8 r108 50 1% r90 13 0 r107 50 1% r109 50 1% r106 50 1% r1 05 50 1% r104 50 1% r102 50 1% r103 50 1% r101 200 1% r100 200 1% c100 .001uf jp15 tp93 tp244 tp245 tp247 jp70 l11 320nh j1c rj nol ed 8 24 7 23 6 22 5 21 4 20 3 19 2 18 1 17 t1c tg110-s460nx 30 11 28 27 12 26 13 14 15 c212 0.1uf tp246 vcc gnd gnd gnd gnd gnd gnd gnd gnd gn d gnd gnd gnd gnd vcc vcc vcc gnda gnda vcc_ct tpon2 tpop2 tpin2 tpip2 sd2 this cap dependant on design optional external jumpered connections for fiber module port 2
demo board for 10/100 applications ? LXD974A development kit manual 25 figure 10. port 3 analog circuitry tp port 3 b1 lxt974a emc b friday, august 28, 1998 ti tle si ze document number rev date: l14 1u h l13 1u h c106 0.1uf c103 0.1uf r114 130 r118 82 r120 130 r116 130 r115 130 r113 82 r110 82 r112 82 c107 0.1uf c109 0.1uf r117 82 c108 0.1uf c104 10uf + c102 0.1uf c105 0.1uf fm4 hp fiber mod rd 2 rd 3 sd 4 td 7 td 8 r129 50 1% c112 .001uf r128 50 1% r130 50 1% r127 50 1 % r126 50 1% r125 50 1% r123 50 1% r124 50 1% r122 200 1% r121 200 1% c111 .001uf jp20 l15 320nh tp98 j1d rjnoled 8 32 7 31 6 30 5 29 4 28 3 27 2 26 1 25 tp249 tp250 tp251 jp71 t1d t g11 0- s46 0n x 25 16 23 22 17 21 18 19 20 c213 0.1uf r111 130 tp248 vcc vcc vcc vcc gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnda gnda vcc_ct tpo n3 tpop3 tpin3 tpip3 sd3 this cap dependant on design optional external jumpered connections for fiber module port 3
LXD974A ? demo board for 10/100 applications 26 development kit manual figure 11. led resistor packs e doc b1 lxt974a emc b friday, august 28, 1998 title size document number rev date: a r2 24 220 r2 27 220 r228 220 r2 29 220 r230 220 r231 220 r240 220 r2 41 220 r243 220 r24 2 220 r226 220 r225 22 0 vcc vcc led2_0 le d 2_2 led1_2 le d 1_0 led2_1 led1_1 led3_1 led3_2 le d 3_0 led0_1 led0_0 le d 0_2

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