DM9102AT datasheet(12/77 Pages) ETC

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DM9102A

Single Chip Fast Ethernet NIC controller

Final

Version: DM9102A-DS-F03

August 28, 2000

SPEED10#

/ LINK#

LED output pin, active low

mode 0 = 10Mbps LED

mode 1 = Link LED

Network Interface

Pin No.

128QFP/128TQFP

Pin Name

I/O

Description

105,106

RXI+

RX-

100M/10Mbps differential input pair.

These two pins are differential receive input pair for

100BASE-TX and 10BASE-T. They are capable of receiving

100BASE-TX MLT-3 or 10BASE-T Manchester encoded

data.

109,110

TXO+

TXO-

100M/10Mbps differential output pair.

These two pins are differential output pair for 100BASE-TX

and 10BASE-T. This output pair provides controlled rise and

fall times designed to filter the transmitter output.

Miscellaneous Pins

Pin No.

128QFP/128TQFP

Pin Name

I/O

Description

CLOCKRUN#

I/O,

O/D

Clockrun#

The clockrun# signal is used by the system to pause or slow

down the PCI clock signal. It is used by the DM9102A to

enable or disable suspension of the PCI clock signal or restart

of the PCI clock. When the clockrun# signal is not used, this pin

should connected to an external pull-down resistor.

TEST2

TEST mode control 2

In normal operation, this pin is pulled-high.

TEST1

TEST mode control 1

In normal operation, this pin is pulled low.

WOL/CSTSCHG

Wake up signal/Card Status Change

This is multiplexed pin to provide Wake on LANsignal or Card

Status Change. In a PCI system, it is used as a WOL signal. In

a CardBus system, it is used as the Card Status Change

output signal and is asynchronous to the clock signal. It

indicates that a power management event has occurred in a

CardBus system. The DM9102A can assert this pin if it detects

link status change, or magic packet, or sample frame. The

default is “normal low, active high pulse”. DM9102A also

support High/Low and Pulse/Level options.

Crystal feedback output pin used for crystal connection only.

Leave this pin open if oscillator is used.

X1/OSC

Crystal or Oscillator input. (25MHZ

²50ppm)

25MHz Oscillator or series-resonance, fundamental

frequency crystal.

102

BGRES

Bandgap Voltage Reference Resistor.

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