82541ER 查看數據表（PDF） - Intel

零件编号

产品描述 (功能)

生产厂家

82541ER

82541ER Gigabit Ethernet Controller

Intel 

82541ER Gigabit Ethernet Controller

3.4

3.4.1

3.4.2

Miscellaneous Signals

LED Signals (4)

Symbol

LINK_LED#

ACTIVITY#

LINK100#

LINK1000#

Type

Name and Function

O

LED0 / LINK Up. Programmable LED indication. Defaults to indicate link

connectivity.

O

LED1 / Activity. Programmable LED indication. Defaults to flash to indicate

transmit or receive activity.

O

LED2 / LINK 100. Programmable LED indication. Defaults to indicate link at

100 Mbps.

O

LED3 / LINK 1000. Programmable LED indication. Defaults to indicate link at

1000 Mbps.

Other Signals (4)

Symbol

SDP[3:0]

Type

Name and Function

Software Defined Pin. The Software Defined Pins are reserved and programmable

TS

with respect to input and output capability. These default to input signals upon power-

up but may be configured differently by the EEPROM. The upper four bits may be

mapped to the General Purpose Interrupt bits if they are configured as input signals.

3.5

3.5.1

PHY Signals

Crystal Signals (2)

Symbol

XTAL1

XTAL2

Type

Name and Function

I

Crystal One. The Crystal One pin is a 25 MHz +/- 50 ppm input signal. It should be

connected to a crystal, and the other end of the crystal should connect to XTAL2.

O

Crystal Two. Crystal Two is the output of an internal oscillator circuit used to drive a

crystal into oscillation.

11

Share Link: