AK2500 데이터 시트보기 (PDF) - Asahi Kasei Microdevices

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AK2500

DS3/STS-l Analog Line Receiver

Asahi Kasei Microdevices 

ASAHI KASEI

[AK2500]

AK2500

Preliminary

I

DS3/STS-l Analog Line Receiver

Features

- AK2500 Provides Complete Analog Line Receiver for DS3 and STS-1 Applications

- Provides Line Equalization, and Clock and Data Recove~ Functions

- The Signal Conditioning Circuit can be bypassed for OC-1 optical applications

- Includes local loopback multiplexer

General Description

The AK2500 provides the analog receive line interface functions for a 44.736 MHz DS3 or 51.84 MHz STS-1

interface, and an OC-1 optical interface. The device operates from a single +3.3 Volt supply and is transparent

to the framing format.

Applications

- Interfacing network transmission equipment such as SONET multiplexer and M 13 to a DSX-3 cross

comect.

- Interfacing customer premises equipment to a line.

Block Diagram

FILOS

12

Block Diaqram

LOSTHR REOB

RPDAT, c

19

RNDAT>

18

FICLK ---

17

VDDP

;6,15

VSSA

ii21 ,22

VDDC —

16

Vssc

ii

VODE —

14

VSSD G

[7

—

ICT

DATA

<

RECOVERY

J

CLOCK <

(I

MUX

— --—— ——— ____

,

I

I

I 4}

I

I

$v

I

I

I

PHASE

I

I

I

DETECTOR

II

I

I

SLAVE PLL

I

J

I

I

I

I

SL4VE

LOOP

I

I

I Vco

FILTER

;’-

I

I----

—A —__ _. .- -. ._, I

124 11

6 y y 9 y3

TMC1 TMC2

LPF1 LPF2 RLOL*

GAIN end LINE -

EQUALIZATION

INPUT

MUX

+

3

e

4

I

I

I

I

+-

I

MASTER

Vco

I

I

I

I

I

I

MASTER PLL

I

I

I ()+ LOOP

e

PHASE

e

I

I

I

FILTER

t

DETECTOR -

, 1:

-1

----------------

q Dual-mode pin

UN q

RIN/AIN ‘

EXCLK

0133-E-00

-1-

1996/7

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