AL2100-DS00-R datasheet(12/52 Pages) BOARDCOM

12 / 52 page

AL2100

Preliminary Data Sheet

11/11/02

Broa d c om Co rp o r a ti o n

Page 4

Document

AL2100-DS01-405-R

MDIO

MDIO (input/output): management data I/O. This serial input/output pin is

used to read from and write to the MII register. The data value on the

MDIO pin is valid, and latched on the rising edge of MDC. This pin

requires a 1 K Ohm resistor pull-up.

MDC

MDC (Input): management data clock. The MDC clock input must be

provided to allow serial management functions. This pin has a SCHMTT-

trigger input.

PHYAD1/LED_FX_SD

PHYAD1 (reset-read input): pull high or low to set PHY address bit 1 for

serial management functions.

LED_FX_SD (output): LED output for fiber signal detects.

The active level is the invert of the reset read value.

PHYAD2/Reserved

PHYAD2 (reset-read input): pull high or low to set PHY address bit 2 for

serial management functions.

Output function is reserved.

PHYAD3/LED4_FDX

PHYAD3 (reset-read input): pull high or low to set PHY address bit 3 for

serial management functions.

LED4_FDX (output): The default behavior is on when the result of the

auto-negotiation on the twisted pair port is full duplex. This LED pin is fully

programmable. The active level is the invert of the reset read value.

PHYAD4/FX_DIS

PHYAD4 (reset-read input): pull high or low to set PHY address bit 4 for

serial management functions.

FX_DIS (output): disable fiber output.

The active level is the invert of the reset read value.

Table 1: Pin Descriptions

Name

Number

Type

Description

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