STE10A datasheet(10/82 Pages) STMICROELECTRONICS

10 / 82 page

Pin description

STE10/100A

10/82

Physical interface

25MHz reference clock input for physical portion. When an

external 25MHz crystal is used, this pin will be connected to

one of its terminals, and X2 will be connected to the other

terminal. If an external 25 MHz oscillator is used, then this

pin will be connected to the oscillator’s output pin.

25MHz reference clock output for physical portion. When an

external 25MHz crystal is used, this pin will be connected to

one of the crystal terminals (see X1, above). If an external

clock source is used, then this pin should be left open.

107,109

TX+, TX-

The differential transmit outputs of 100BASE-TX or 10BASE-

T, these pins connect directly to magnetic.

105,104

RX+, RX-

The differential receive inputs of 100BASE-TX or 10BASE-T,

these pins connect directly from magnetic.

101

Iref

Reference resistor connecting pin for reference current,

directly connects a 5KOhm

±1% resistor to Vss.

LED display & miscellaneous

LED M1-

LK/Act

LED M2-

Act

This pin can be programmed as mode 1 or mode 2:

For mode 1:

LED display for link and activity status. This pin will be driven

on continually when a good Link test is detected. This pin will

be driven at a 10Hz blinking frequency when either effective

receiving or transmitting is detected.

For mode 2:

LED display for activity status. This pin will be driven at a

10Hz blinking frequency when either effective receiving or

transmitting is detected.

LED M1-

Speed

LED M2-

100 link

This pin can be programmed as mode 1 or mode 2:

For mode 1:

LED display for 100M b/s or 10M b/s speed. This pin will be

driven on continually when the 100M b/s network operating

speed is detected.

For mode 2:

LED display for 100Ms/s link status. This pin will be driven on

continually when 100Mb/s network operating speed is

detected.

Table 1.

Pin description (continued)

Pin no.

Name

Type

Description

STE10A Datasheet(PDF) 10 Page - STMicroelectronics

STE10A Datasheet(HTML) 10 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82

Datasheet Download

Link URL