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STM1E-SFPxx 155Mbps Copper Transceiver
Final Datasheet
Features
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Compatible with the Multi-Source Agreement
(MSA) for SFP transceivers
75 ? media interface compliant with
ITU-T G.703 and Telcordia GR-253 for CMI
coded 155Mbps electrical interfaces
ITU-T G.783 compatible loss of signal detect
Transmit power down and tri-state control
Handles over 12.7dB of cable loss
Extended Temperature operation: -20 C to 85 C
75 ? DIN 1.0/2.3 female coaxial media interface
supports Type A and Type D coupling
Low power dissipation (0.6 W typical)
Compliant with RoHS 6/6 (lead-free)
Benefits
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Compatible with existing OC3/STM1o line cards
using the pluggable SFP form factor
Provides end user flexibility on a per port basis
Reduces cost to system developers for offering
STM-1 electrical interfaces
Eliminates risk of laser wear out for central office
interconnects
Description
The STM1E-SFPxx is a Small Form-factor Pluggable (SFP) module compatible with the Multi Source Agreement
(MSA) for SFP transceivers. The module utilizes the latest generation of Line Interface Units (LIUs) for 155 Mbit/s
electrical interfaces (STM-1e, ES1) from Teridian Semiconductor Corporation (TSC). It also includes all the
necessary components for interfacing to 75 ? telecommunications coaxial cable.
The Teridian 78P2351R physical layer IC includes Clock & Data Recovery in both directions and a CMI
encoder/decoder for transparent NRZ to CMI line code conversion. It provides Receive Loss of Signal (LOS)
detection for electrical CMI interfaces and the option to disable (and tri-state) the transmit driver. A serial
interface provides access to an on board EEPROM for identification information.
Tx Disable
STM1e
(electrical)
Tx Data
TERIDIAN 78P2351R
output signal
Rx Data
Rx LOS
STM1e Line Interface Unit
Magnetics
&
Protection
1.0/2.3
Mini-coax
STM1e
MOD_DEF[2:0]
EEPROM
XO
(electrical)
input signal
Figure 1: Transceiver Functional Diagram
STM1E-SFPxx Datasheet
-1-
August 2008 v2-2
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