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LXD975A 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: 249105-001 LXD975A demo board for 10/100 applications .
LXD975A 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 LXD975A 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.
LXD975A 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
iv LXD975A demo board for 10/100 applications development kit manual figures 1 LXD975A demo board.......................................................................................... 6 2 basic test setup ................................................................................................... 9 3 LXD975A............................................................................................................. 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 tables 1 external blue-wire connections for fiber module operation ............................... 8 2 LXD975A jumper settings for twisted-pair operation....................................... 10 3 LXD975A 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 lxt975a bill of materials.................................................................................... 16
demo board for 10/100 applications ? LXD975A development kit manual 5 1.0 general description the LXD975A demo board is a four-port 10/100 mbps ethernet media access unit (mau) that demonstrates all of the standard mii features of the lxt975a fast ethernet quad transceiver. the LXD975A is designed to maximize return loss and emi performance. the network interface pins are optimized for dual-high stacked rj-45 applications. the LXD975A provides a working platform for evaluation of the lxt975a fast ethernet 10/100 quad transceiver in 10base-t and/or 100base-tx/fx applications. a pseudo-ecl (pecl) interface is provided on two ports for fiber operation. the LXD975A 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.
LXD975A ? demo board for 10/100 applications 6 development kit manual figure 1. LXD975A demo board fiber module fiber module mii interface s1 p1 vcc gnd s2 mddis pwrdn trste3 trste2 trste1 trste0 fde autoena mii_mdo mii_md1 bypscr cfg_2 cfg_1 cfg_0 fde_fx test s4 reset switches led?s col spd hd link rx tx led_2 led_1 led_0 lxt975a demo rev b2 twisted-pair interface lxt975a 1 8 1 8 18 18 port 2 port 3 port 0 port 1 s3 add4 add3 add2
demo board for 10/100 applications ? LXD975A development kit manual 7 2.0 setup procedures this document describes typical demo board setup 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 backpage for listings). the LXD975A 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 LXD975A 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 LXD975A and press reset switch s4. 7. proceed with evaluation as desired. 2.1.2 fiber modules there are two combination twisted-pair/fiber ports provided on the lxt975a (ports 1 and 3). for 100base-fx evaluation, fiber-optic transceiver modules (hfbr-5103) and four external blue- wire connections are required per port . remove twisted-pair transformer. solder fiber modules on board.
LXD975A ? demo board for 10/100 applications 8 development kit manual cut the required circuit traces and make the external blue-wire connections as shown below. set the fiber module jumpers as shown in table 3 on page 11 . 2.1.2.1 external blue-wire connections nine cuts and eight external blue-wire connections are required to set up the combination ports for fiber operation. cut circuit traces as required to remove t1, r59, r60, r61, r62, r121, r122, r123, and r124. make the external blue-wire connections using 24 awg solid wire from the LXD975A test points to the t1 transformer pads as shown in table 1 . tp240 - tp243 represent port 1 and tp248 - tp251 represent port 3. refer to figure 7 on page 22 (port 1) and 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 LXD975A. the LXD975A 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 LXD975A through rj-45 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 LXD975A test point t1 pads tp240 6 tp241 8 tp242 9 tp243 10 tp248 16 tp249 18 tp250 19 tp251 20
demo board for 10/100 applications ? LXD975A development kit manual 9 figure 2. basic test setup rs-232 utp utp rj45s mii connectors smartbits advanced multi-port performance tester mii cable ) LXD975A external nic cards smart windows
LXD975A ? 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 LXD975A for the smartbits test box to access the mii management registers inside the lxt975a. 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. LXD975A 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 ? LXD975A 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. LXD975A jumper settings for twisted-pair operation port jumper description jumper setting table 3. LXD975A 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
LXD975A ? demo board for 10/100 applications 12 development kit manual 4.0 switches 4.1 operating characteristics three switches configure operating characteristics of the LXD975A. 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 ? LXD975A 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 LXD975A. 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 lxt975a. 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
LXD975A ? 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 ? LXD975A development kit manual 15 5.0 led indicators there are 38 status leds on the demo board. the lxt975a 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 lxt975a data sheet for led programming options. table 8. global led descriptions label ref des description mdint d1 management data interrupt. indicates status change to lxt975a. pwr d77 power. indicates power to LXD975A 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.
LXD975A ? demo board for 10/100 applications 16 development kit manual 6.0 bill of materials and board schematics table 10. lxt975a bill of materials item qty reference designator description 1 1 c1 100 uf tantalum 2 1 c2 1.0 uf tantalum 3 1 c3 22 uf tantalum 442 c4, c5, c10, c11, c12, c13, c14, c15, c16, c17, c41, c42, c43, c44, c45, c46, c47, c48, c49, c50, c51, c52, c53, c54, c80, c102, c103, c105, c106, c107, c108, c109, c165, c166, c167, c168 0.1 uf 519 c78, c79, c89, c90, c100, c101, c111, c112, c159, c160, c161, c162, c163, c169, c170, c171, c172, c173, c174 .001 uf 6 3 c82, c104, c175 10 uf 7 1 c176 .01 uf 8 2 c177, c178 47 uf 9 14 d1, d3, d8, d9, d14, d15, d20, d21, d26, d29, d32, d35, d38, d77 led red 10 1 d2 diode 11 16 d4, d5, d7, d10, d11, d13, d16, d17, d19, d22, d23, d25, d28, d31, d34, d37 led yellow 12 8 d6, d12, d18, d24, d27, d30, d33, d36 led green 13 2 fb2, fb1 14 2 fm4, fm2 hp fiber module 15 16 jp1, jp2, jp8, jp13, jp14, jp20, jp50, jp51, jp52, jp53, jp54, jp55, jp56, jp57, jp69, jp71 jumpers 16 1 j1 connector rj-45 17 1 j3 con2 18 4 l3, l7, l11, l15 320 nh 19 4 l5, l6, l13, l14 1 uh 20 1 p1 termblk 21 4 p4, p5, p6, p7 mii 40-pin connector 22 2 r1, r261 23 1 r2 22.1 k ? 1% 24 78 r, 3r4, 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, r4, 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, r357, r413, r414, r415 50 ? 1% 25 2 r5, r6 10k ? 26 8 r38, r39, r59, r60, r100, r101, r121, r122 200 ? 1% 27 10 r48, r50, r51, r55, r56, r110, r112, r113, r117, r118 82 ? 28 10 r49, r52, r53, r54, r58, r111, r114, r115, r116, r120 130 ?
demo board for 10/100 applications ? LXD975A development kit manual 17 29 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 ? 30 4 r353, r354, r355, r356 75 ? 1% 31 36 r358, r359, r360, r361, r362, r363, r364, r365, r366, r367, r368, r369, 370, r371, r372, r373, r374, r375, r376, r377, r378, r379, r380, r381, r382, r383, r384, r385, r386, r387, r388, r389, r390, r391, r392, r393 220 ? 32 19 r394, r395, r396, r397, r398,r399, r400, r301, r402, r403, r404, r405, r406, r407, r408, r409, r410, r411, r412 4.7 k ? 33 2 s1, s2 switch dip-8 34 1 s3 switch dip-4 35 1 s4 switch spdt 36 1 u1 quad transceiver lxt975a 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-s462nx 42 1 y1 crystal oscillator - 25 mhz table 10. lxt975a bill of materials item qty reference designator description
LXD975A ? demo board for 10/100 applications 18 development kit manual figure 3. LXD975A 1 doc b2 LXD975A emc rev b2 b thursday, august 20, 1998 titl e size d ocument n umber rev date: s3 sw dip-4 1 2 3 4 8 7 6 5 r1 330 d1 led rd j3 con2 1 2 r3 50 1% r4 50 1% r2 22.1k 1% r5 10k r6 10 k u4 a 74h ct 08 1 2 3 u5a 74hct04 1 2 u4 b 74h ct 08 4 5 6 u5b 74hct04 3 4 d2 diode c2 1.0uf tantalum tp12 tp13 tp18 tp15 tp16 tp17 tp258 tp259 tp260 tp218 d77 led rd r261 330 s2 sw dip-8 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 s4 sw spdt 2 1 3 u1e lxt975 add2 18 mddis 100 add3 19 autoena 111 mii_md0 10 1 add4 20 pwrdn 102 ledclk 15 mii_md1 112 trste3 103 leddat 16 trste2 104 ledena 17 bypscr 113 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 clk 25m 118 mdio 97 mdint 98 mdc 99 rb ia s 14 0 reset 109 test 15 9 tp257 r406 4.7k r407 4.7k r408 4.7k r4 09 4. 7k r398 4.7k r399 4.7k r400 4.7k r401 4.7k r4 10 4. 7k r411 4.7k r412 4.7k s1 sw dip-8 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 r402 4.7k r403 4.7k r404 4.7k r405 4.7k r394 4. 7k r3 95 4. 7k r396 4.7k r397 4.7k p1 termblk fb2 c1 100uf tantalum c175 10uf c176 .01uf r413 50 1% r357 50 1% y1 25mhzcrystal osc nc 1 gnd 7 out 8 vcc 14 tp14 r414 50 1% reset vcc gnd vcc vcc gnd vcc gnd vcc vcca gnda gnda gnda gnda gnda gnd vcc vcca gnd gnda gnd vc c ledena ledd at ledc lk mdio mdc vcc vcc mdint diff probe receptacle vcc distribute
demo board for 10/100 applications ? LXD975A development kit manual 19 figure 4. leds doc b2 LXD975A emc rev b2 b thursday, august 20, 1998 ti tl e size document 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 d1 4 led rd d15 led rd d9 led rd d8 led rd d21 led rd d25 led ylw d2 2 led ylw d23 led ylw d19 led ylw d17 led ylw d1 6 led ylw d13 led ylw d11 led ylw d4 led ylw d5 led ylw d7 led ylw d3 led rd d10 led yl w d2 4 led gr d18 le d g r d12 led gr d6 led g r r370 22 0 r371 220 r37 2 220 r373 220 r376 220 r3 74 220 r375 220 r377 22 0 r38 0 220 r378 22 0 r379 220 r381 220 r3 82 220 r384 220 r383 220 r385 22 0 r38 8 220 r386 22 0 r387 220 r389 220 r3 90 220 r392 220 r391 220 r393 22 0 r415 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 link3 fd3 spd3 co l3 vcc vcc ledclk leddat ledena vcc vcc vcc vcc
LXD975A ? demo board for 10/100 applications 20 development kit manual figure 5. ports 0 and 1 doc b2 LXD975A emc rev b2 b thursday, august 20, 1998 title size document number rev date: r13 50 1% r15 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% r18 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 le d 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 1y 1 18 1y 2 16 1y 3 14 1y 4 12 2y 1 9 2y 2 7 2y 3 5 2y 4 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 d31 le d y lw r272 22 r279 22 r278 22 r277 22 r273 22 r274 22 r275 22 r276 22 r280 22 r281 22 d32 led rd u1a lx t 9 75 tpip0 158 tpin0 157 tpop0 155 tpon0 152 rxd0_3 23 rxd0_2 24 rxd0_1 25 rxd0_0 26 rx_d v0 27 gnd 156 rx_clk0 28 le d 0_ 0 11 rx_er 0 29 le d 0_ 1 12 tx_er0 30 le d 0_ 2 13 tx_c lk0 31 tx_en0 32 txd0_0 33 txd0_1 34 txd0_2 35 txd0_3 36 col0 37 crs 0 38 u1b lxt975 tpip1 14 2 tpin1 14 3 tpop1 14 5 tpon1 14 8 rx d1_3 42 rx d1_2 43 rx d1_1 44 rx d1_0 45 rx _d v1 46 sd1 14 9 rx _c lk1 47 led1_0 8 rx _e r1 48 led1_1 9 tx_er1 49 led1_2 10 nc 41 tx_c lk1 50 tx_en1 51 txd1_0 52 txd1_1 53 txd1_2 54 txd1_3 55 col1 57 crs1 58 gnd 56 md io md c gnd vcc gnd gnd vcc gnd gnd vcc vcc gnd gnd gnda tpon 0 tpop0 tpin0 tpip0 sd1 tpon 1 tpop1 tpin1 tpip1 led0_2 led0_1 led0_0 led1_2 mdio mdc led1_1 led1_0 to sheet 4: to sheet 5: p orts 0 an d 1
demo board for 10/100 applications ? LXD975A development kit manual 21 figure 6. port 0 analog circuitry doc b2 LXD975A emc rev b2 b thursday, august 20, 1998 title size document number rev date: sheet r46 50 1% c79 .001uf r45 50 1% r47 50 1% r44 50 1% r43 50 1% r39 200 1% r38 200 1% l3 320nh c78 .001uf r41 50 1% r40 50 1% r42 50 1% j1a rjstk_4 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 a t1a tg110-s462nx 1 2 3 4 5 40 39 37 38 36 r353 75 1% fb1 c165 0.1uf vcc gnda vcc_ct gnda vcc_ct tpip0 tpin 0 tpo n0 tpo p0 th is cap dependant on design p ort 0
LXD975A ? demo board for 10/100 applications 22 development kit manual figure 7. port 1 analog circuitry doc b2 LXD975A emc rev b2 b thursday, august 20, 1998 tit le size document number rev da t e : l6 1uh l5 1uh c84 0.1uf c81 0.1uf r52 13 0 r56 82 r58 130 r5 4 13 0 r51 82 r48 82 r50 82 c85 0.1uf c87 0.1uf r55 82 c86 0.1uf c82 10uf + c80 0.1uf c83 0.1uf fm2 hp fiber mod rd 2 rd 3 sd 4 td 7 td 8 r67 50 1% c90 .001uf r4 9 13 0 r66 50 1% r6 8 50 1 % r65 50 1% r64 50 1% r63 50 1% r61 50 1% r6 2 50 1% r60 200 1% r59 200 1% jp8 l7 320nh tp2 40 tp241 tp2 42 tp243 jp69 r53 130 tp56 j1b rjstk_4 8 16 7 15 6 14 5 13 4 12 3 11 2 10 1 9 b r354 75 1% t1b tg110-s462nx 9 10 6 7 8 32 31 34 35 33 c89 .001uf c1 6 6 0.1uf vcc gnd gn d gn d gnd gnd gnd gnd gnd gnd gnd gnd gn d gnd vcc vcc vcc vcc_ct gnda gnda tpop1 tpin1 tp ip1 sd1 tpon1 th is c ap dependant on design port 1 optional external jumpered connections for fiber module
demo board for 10/100 applications ? LXD975A development kit manual 23 figure 8. ports 2 and 3 doc b2 LXD975A emc rev b2 b thursday, august 20, 1998 title size document number rev date: r75 50 1% r77 50 1% r78 50 1% r71 50 1% r72 50 1% r74 50 1% r70 50 1% r69 50 1% p6 m ii 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 r73 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% r88 50 1% jp13 jumper jp14 jumper r76 50 1% r86 50 1% u13 74abt244 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 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 d33 led gr u14 74abt244 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 r87 50 1% u16 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 tp63 tp62 tp64 tp65 tp66 tp67 tp68 tp61 tp90 tp88 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 r290 22 r291 22 d38 led rd d37 led ylw d36 led gr tp82 tp84 tp81 tp80 tp 79 tp78 tp83 r292 22 r298 22 r297 22 r293 22 r296 22 r295 22 r294 22 r299 22 tp7 7 r300 22 r301 22 u1c lxt975 tpip2 139 tpin2 138 tpop2 136 tpon2 133 rxd 2_3 61 rxd 2_2 62 rxd 2_1 63 rxd 2_0 64 rx_dv2 65 gnd 137 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 cr s2 76 u1d lxt975 tpip3 123 tpin3 124 tpop3 12 6 tpon3 129 col3 93 rx d3_3 79 crs3 94 rx d3_2 80 rx d3_1 81 rx d3_0 82 rx _dv 3 83 sd 3 130 rx _clk3 84 led3_0 1 rx _er 3 85 led3_1 2 tx_er3 86 led3_2 3 tx_c lk3 87 tx_en3 88 txd3_0 89 txd3_1 90 txd3_2 91 txd3_3 92 mdio mdc gnd gnd vcc gnd gnd gnd vcc vcc vcc gnda tpi p2 tpi n 2 tpop2 tpon2 sd3 tpon3 tpip3 tpop3 tpin3 led2_2 led2_1 led2_0 led3_1 led3_2 led3_0 mdio mdc to sheet 7: to sheet 8: p orts 2 an d 3
LXD975A ? demo board for 10/100 applications 24 development kit manual figure 9. port 2 analog circuitry doc b2 LXD975A emc rev b2 b thursday, august 20, 1998 title size document number rev dat e: r108 50 1% c101 .001uf r107 50 1 % r109 50 1% r106 50 1% r105 50 1% r104 50 1% j1c rjstk_4 1 17 2 18 3 19 4 20 5 21 6 22 7 23 8 24 c r355 75 1% t1c tg110- s462n x 30 29 27 28 26 11 12 13 14 15 r100 200 1% r101 200 1% r102 50 1% l11 320nh c100 .001uf r10 3 50 1 % c167 0.1uf gnda gnda vcc_ct tpip2 tpon 2 tpop2 tpin2 dependant on design this cap p ort 2
demo board for 10/100 applications ? LXD975A development kit manual 25 figure 10. port 3 analog circuitry doc b2 LXD975A emc rev b2 b thurs day, august 20, 1998 ti tle si ze document number rev date: l14 1uh l 13 1uh c106 0.1uf c103 0.1uf r114 130 r118 82 r120 130 r116 130 r115 130 r11 3 82 r110 82 r112 82 c107 0.1uf c109 0.1uf r117 82 c1 08 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 r111 130 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 20 0 1% c111 .001uf jp20 l15 320nh tp98 tp248 tp249 tp250 tp251 jp71 j1d rjstk_4 8 32 7 31 6 30 5 29 4 28 3 27 2 26 1 25 d t1 d tg110 -s4 62 nx 22 21 24 25 23 19 20 16 17 18 r356 75 1% c168 0.1uf vcc vcc vcc vcc gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnda gnda vcc_ct tp on3 tp op3 tpin3 tpip3 sd3 dependant on design this cap port 3 optional external jumpered connections for fiber module
LXD975A ? demo board for 10/100 applications 26 development kit manual figure 11. led resistor packs doc b2 LXD975A emc rev b2 a thursday, august 20, 1998 ti t l e size document number rev r364 220 r3 65 220 r3 66 220 r3 67 220 r358 220 r359 220 r360 220 r36 1 220 r362 220 r368 220 r363 220 r369 220 vcc vc c led2_0 led2_2 led1_2 led1_0 led2_1 led1_1 led3_1 led3_2 led3_0 led0_1 led0_0 led0_2

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