Intel 21143 manual Ports, AUI Signals, Twisted-Pair Signals, Signal Pin Number

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

SYM-based PHY devices are provided by GEC Plessey*, Quality Semiconductor*, and Micro Linear*.

Figure 2. SYM-Based PHY Design

SYM Port	SYM-Based
of		Magnetics	100 Mb/s
	PHY
21143			Network
	Devices	Module

The SYM-based PHY design includes the following components:

•The SYM-based PHY devices, which have a direct interface to the SYM port of the 21143 with an interface to the 100 Mb/s magnetics module.

•The magnetics module, which is based on transformers and serial chokes enabling the network connection to the 100 Mb/s-only network (100BASE-TX or 100BASE-T4).

2.021143 Ports

Table 2 lists the active AUI signals when the 21143 AUI port is selected.

Table 2. AUI Signals

Signal	Pin Number
aui_cd–	138
aui_cd+	137
aui_rd–	140
aui_rd+	139
aui_td–	143
aui_td+	142

Table 3 lists the active twisted-pair signals when the 21143 10BASE-T port is selected.

Table 3. Twisted-Pair Signals

Signal	Pin Number
tp_rd–	10
tp_rd+	9
tp_td–	5
tp_td– –	4
tp_td+	6
tp_td+ +	7

Table 4 lists the active MII signals when the 21143 MII port is selected.

Design Guide 7