Intel 21143 manual Contents

				Contents
Contents
1.0	Functional Overview			5
	1.1	21143 Overview		5
	1.2	Network Interface		5
	1.3	MII-Based PHY Block Diagram		6
	1.4	SYM-Based PHY Block Diagram		6
2.0	21143 Ports		.....................................................................................................................................	7
3.0	Network Connection			9
	3.1	10BASE-TTwisted-Pair Network Port		9
	3.2	100-Ready Designs		12
		3.2.1	Internal Optional Daughtercard	13
		3.2.2 Description of 100-Ready Daughtercard Block Diagram		13
		3.2.3 100-Ready External Module Design		14
		3.2.4 Description of 100-Ready External Module Block Diagram		14
		3.2.5	MII/SYM Pin Listing	14
	3.3	AUI Network Port		15
	3.4	Media-Specific Components		18
4.0	21143 Requirements			19
	4.1	Unused JTAG Port Requirements		19
	4.2	Current Reference and Capacitor Input Requirements		19
	4.3	Crystal and Crystal Oscillator Connections		20
5.0 Signal Routing and Placement				21
	5.1	Ground and Power Planes		21
		5.1.1 3.3 V Power Supply		22
	5.2	LED Status Signals		22
6.0	Design Considerations			23
	6.1	Designing the Ethernet Corner on Motherboards		23
	6.2	Suggestions for FCC Compliance		23
		6.2.1 Suggestions for Quiet Ground and Power Planes		23
		6.2.2	Suggestions for Routing	24
Figures
1	MII-Based PHY Design			6
2	SYM-Based PHY Design			7
3 10BASE-T Network Connection with Buffers				10
4 10BASE-T Network Connection Without Buffers				11
5	Minimum Components Required for 10BASE-T			12
6 10BASE-T100-Ready Daughtercard Block Diagram				13
7 10BASE-T100-Ready External Module Block Diagram				14
8 AUI 10BASE5 Network and Pin Connections				16

Design Guide 3