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78P2351R-IM

更新时间： 2024-09-17 06:32:07

品牌	Logo	应用领域
TERIDIAN		转换器
页数	文件大小	规格书
31页	573K
描述
Serial 155M NRZ to CMI Converter

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中文翻译

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数据手册

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78P2351R-IM 数据手册

78P2351R

Serial 155M

NRZ to CMI Converter

DATA SHEET

AUGUST 2006

DESCRIPTION

FEATURES

The 78P2351R is Teridian’s second generation Line

Interface Unit (LIU) for 155 Mbit/s electrical SDH

interfaces (STM1e). The device is a single chip

solution that includes an integrated Clock & Data

Recovery in both the transmit and receive paths for

easy, cost efficient NRZ to CMI conversion.

•

ITU-T G.703 compliant, adjustable cable driver

for 155.52 Mbps CMI-coded coax transmission

Integrated adaptive CMI equalizer and CDR in

receive path handles over 12.7dB of cable loss

LVPECL-compatible system interface with

integrated CDR in transmit path for flexible NRZ

to CMI conversion

The device interfaces to 75Ω coaxial cable through

•

Configurable via HW control pins or 4-wire serial

port interface

wideband transformers and can handle over 12.7dB

of cable loss.

By eliminating the needs for

Compliant with ANSI T1.105.03-1994; ITU-T

G.813, G.825, G.958; and Telcordia GR-253-

CORE for jitter performance

synchronous clocks, the small 78P2351R (7x7mm

MLF package) is ideal for new STM1e (ES1) Small

Form-factor Pluggable (SFP) transceiver modules.

•

Receive Loss of Signal (Rx LOS) detection

Receive Monitor Mode handles up to 20dB of

flat loss (at max 6dB cable loss)

APPLICATIONS

•

Optional fixed backplane equalizer compensates

for up to 1.5m of trace

•

STM1e SFP modules

SDH/ATM Line Cards

•

Operates from a single 3.3V supply

Add Drop Multiplexers (ADMs)

PDH/SDH Test Equipment

Digital Microwave Radios

Multi-Service Switches

Available in a small 7x7mm 56-pin QFN

package

•

Industrial Temperature: -40˚C to +85˚C

BLOCK DIAGRAM

78P2351R

75ohm Coax

(CMI Encoded)

Tx Disable

TD +

TD -

Fixed

Eq.

CDR

LVPECL Data

(NRZ Encoded)

CMI

ENDEC

RD +

RD -

Adaptive

Eq.

CDR

Rx LOS

Page: 1 of 31

2006 Teridian Semiconductor Corporation

Rev. 2.1

12 3 4 5 6 7...31

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