Intel 21143 Internal Optional Daughtercard, Description of 100-Ready Daughtercard Block Diagram

Intel® 21143 PCI/CardBus 10/100Mb/s Ethernet LAN Controller

Table 6. Internal vs. External Design Features

Design	Features
Internal optional daughtercard	• Can be designed with an MII or any custom connector.
	• User opens cabinet to install 100 Mb/s daughtercard.
External MII/SYM module	• User connects module to external MII/SYM connector; user does
	not have to open cabinet for installation.

3.2.1Internal Optional Daughtercard

Figure 6 shows a block diagram of a 100-Ready design using a daughter card.

Figure 6. 10BASE-T 100-Ready Daughtercard Block Diagram

21143

PCI

Bus

MII

10BASE-T

Optional

MII

Daughtercard

Optional

AUI Coaxial

Transceivers

RJ45

Connector

AUI

Coaxial

Connector

LJ-05189.AI4

3.2.2Description of 100-Ready Daughtercard Block Diagram

The blocks in the10BASE-T 100-Ready block diagram represent the following components:

•21143 — A 21143 with all of the external components for operating the network connection (reference parts, XTAL, and so on). The 21143 can use the PCI bus, and the MII/SYM, 10BASE-T, and AUI coaxial ports for communication.

•Optional MII/SYM daughtercard — A daughtercard with a 100 Mb/s or 10/100 Mb/s PHY that interfaces with an MII connector or custom connector. The daughtercard can be designed to use the same RJ45 connector.

•RJ45 — A network connection.

Design Guide 13