Intelメーカー21143の使用説明書/サービス説明書
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Intel ® 21 143 PCI/CardBus 10/ 100Mb/s Ethernet LAN Controller Design Guid e July 2002 Order Numb er: 27858 8-001.
2 Design G uide Informati on in th is docum ent is p rovided in conn ection with Inte l ® products . No license, express or imp lied, by estoppe l or otherwise, to any intellectu al property rights is g ranted by this docu ment.
Design G uide 3 Contents Contents 1.0 Functiona l Overview ................. ............. .................... ............ ............. .................... .......... ... ............ 5 1.1 21143 Overview ....... ...... ....... ...... ....... ....
4 Design G uide Contents 9 AUI 10BA SE2 Network Conn ection ....... .................... ............ .................... ............. ................... . 17 10 21143 Ex ternal Compo nent Connec tions .................. ............ ..............
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controller Design G uide 5 This desi gn guide provides a de scription o f how to imp lement 100B ASE-TX and 10BASE-T network con nections u sing the 21 143 PCI/CardBu s 10/10 0 Mb/s Ethernet LAN C ontroller (referred t o as the 21 143).
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controlle r 6 Design G uide The 21 143 imp lements the 100BASE- T MII layer and the 100 /10 Mb/s Ethernet MAC layer . The 21 143 pro vides a dual network interf ace for both a 1 00BASE-T and a 10 Mb/s Ethern et.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controller Design G uide 7 SYM-based PHY dev ices ar e provided by GEC Ples sey*, Quality Semiconductor*, and Micro Linear*.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controlle r 8 Design G uide Ta b l e 5 lists the active SYM signals when the 21 143 SYM port is selected.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controller Design G uide 9 3.0 Network Connection The network connections of the 21 14 3 can be used i n 10BASE-T , AUI, MI I, or SYM configurations. Dif ferent method s are used to conn ect each port to the actual cable con nector .
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controlle r 10 Design G uide Figure 3. 1 0BASE-T Network Connection with Buff ers tp_td+ 6 tp_td++ 7 tp_td- 5 tp_td-- 4 tp_rd- 9 tp_rd- 10 21143 Transmit Path Receive Path GND GND 61.9 301 61.9 301 806 TP Filters and Chokes 78Z041 (SMD) RJ45 GND 1 2 3 6 49.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controller Design G uide 11 Figur e 4 shows the 10B ASE-T networ k connection w ithout buf fers.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controlle r 12 Design G uide Figur e 5 shows the mi nimum comp one nt requi rement fo r the 10BASE-T net work c onn ection. This implementation uses a filter transformer module with a 1: transformer on th e transmit path to compensate for the vo ltage swing.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controller Design G uide 13 3.2.1 Internal Optional Daughtercard Figur e 6 shows a block d iagram of a 100-Ready d esign us ing a daught er card.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controlle r 14 Design G uide 3.2.3 100-R eady Ext ernal Module Design Figur e 7 shows a block diag ram of a 100- Ready design using an external mod ule.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controller Design G uide 15 3.3 A UI Ne tw o rk Por t The 21 143 is fully compliant with the AUI standard. The AUI can interface with an external medium-attachment unit (MAU) and connect to alternate media, such as 10BASE2 (ThinW ire) and 10BASE5 (t hickwire).
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controlle r 16 Design G uide Figure 8. A UI 10BASE5 Network and Pin Connectio ns aui_rd+ 139 aui_rd- 140 aui_cd+ 137 aui_cd- 138 aui_td+ 142 aui_td- 143 21143 Transmit Path Receive Path GND 40.2 40.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controller Design G uide 17 Figur e 9 shows the AUI 10BASE2 networ k connection . In this conf iguratio n, the AUI is n ot externally exposed.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controlle r 18 Design G uide 3.4 Media-Specific Components Ta b l e 8 lists the media-specif ic interface components for 10 BASE-T access. Ta b l e 1 0 list s the media-specific interface compon ents for 10BASE2 an d 10BASE5 access.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controller Design G uide 19 4.0 21 143 Requi rement s This sectio n provide s informat ion about th e external comp onent connect ions for the 21.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controlle r 20 Design G uide 4.3 C ryst al and Cryst al Oscillator Connections Figur e 10 s hows two serial clock con nections; select either the crystal connection or the crys tal oscillator connection.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controller Design G uide 21 5.0 Signal Ro uting and Pla cement The Ethernet circuitry should be kept f ree of interference from u nrelated si gnal t races. Routi ng for other signals must be kept away from the space surrounding the grouped Ethernet components.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controlle r 22 Design G uide Intel also rec ommends th at the conn ector ’ s shield of the adapter should be connected to the PC chassis. 5.1.1 3.3 V Power Supply The 21 143 o perates with a power supply of 3.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controller Design G uide 23 6.0 Design C onsiderations This section provid es informat ion to aid t he user in desi gni ng Ethernet and Fas t Ethernet capa bilitie s onto a motherboard. In addition, i t also i ncludes des ign consi derations for FCC compl iance.
Intel ® 21 143 PC I/CardBus 10 /100Mb/s Ether net LAN Controlle r 24 Design G uide • Engineering Electromagnetic Capability , by V . Prasad Kodali 6.
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