AL2100-DS00-R datasheet(10/52 Pages) BOARDCOM

10 / 52 page

AL2100

Preliminary Data Sheet

11/11/02

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

Page 2

Document

AL2100-DS01-405-R

Section 2: Pin Des c r i ptions

Signal Types:

P = Power pin

G = Ground pin

AI = Analog Input pin

AO = Analog Output pin

D = Digital Pull-Down pin

U = Digital Pull-Up pin

OVERLINE = Active Low

B = Bi-directional digital pin

Table 1: Pin Descriptions

Name

Number

Type

Description

VCC

2.5V supply.

FIP

FX PECL input +

FIN

FX PECL input -

SD_B/FXEN_B

SD_B/FXEN_B: multilevel threshold input. When the input level is 0V, the

FX module is disabled. When the input is > 1V, the FX module is enabled,

and this pin is used as the SD input with the PECL threshold.

FOP

FX PECL output +

FON

FX PECL output -

GNDFX

Ground.

GND

Ground.

ISO

ISO (reset-read Input): pull high to isolate the TP PHY.

GND

Digital Ground.

VCC

2.5V supply.

FEF_DIS/Reserved

FEF_DIS (reset-read input): pull high to disable the remote fault function

in the fiber PHY, i.e. fiber-to-fiber fault propagation disable.

Output function is reserved.

FX2TP_DIS/Reserved

FX2TP_DIS (reset read Input): pull high to disable fiber-to-twisted-pair

fault propagation.

Output function is reserved.

REDUN/Reserved

REDUN: redundancy function input. Input low to activate the chip; input

high to put the chip in backup mode.

For the primary chip, this pin is pulled low. For the secondary chip, this

pin is connected to the DATA_OFF pin of the primary chip.

Output function is reserved.

Reserved/DATA_OFF

Input function is reserved.

DATA_OFF: (output) high to put the secondary chip in backup mode.

For the primary chip, this pin is connected to the REDUN of the secondary

chip.

TP2FX_DIS/Reserved

TP2FX_DIS (reset read Input): pull high to disable twisted pair-to-fiber

fault propagation.

Output function is reserved.

Reserved

Input function is reserved. This pin is always pulled low.

GND

Ground.

AL2100-DS00-R Datasheet(PDF) 10 Page - Broadcom Corporation.

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