Features: RECEIVER:•On chip Clock and Data Recovery circuit for high input jitter tolerance.•Meets the jitter tolerance requirements as specified in ITU-T G.823_1993 for E3 and Telcordia GR-499-CORE for DS3 applications.•Detects and Clears LOS as per G.775.•Receiver Monitor...
XRT75L04: Features: RECEIVER:•On chip Clock and Data Recovery circuit for high input jitter tolerance.•Meets the jitter tolerance requirements as specified in ITU-T G.823_1993 for E3 and Telcordia...
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RECEIVER:
•On chip Clock and Data Recovery circuit for high input jitter tolerance.
•Meets the jitter tolerance requirements as specified in ITU-T G.823_1993 for E3 and Telcordia GR-499-CORE for DS3 applications.
•Detects and Clears LOS as per G.775.
•Receiver Monitor mode handles up to 20 dB flat loss with 6 dB cable attenuation.
•On chip B3ZS/HDB3 encoder and decoder that can either be enabled or disabled.
•On-chip clock synthesizer generates the appropriate rate clock from a single frequency XTAL.
•Provides low jitter clock outputs for either DS3,E3 or STS-1 rates.
TRANSMITTER:
•Compliant with Telcordia GR-499, GR-253 and ANSI T1.102 Specification for transmit pulse
•Tri-state Transmit output capability for redundancy applications
•Transmitters can be turned on or off.
JITTER ATTENUATOR:
•On chip advanced crystal-less Jitter Attenuator.
•Jitter Attenuators can be selected in Receive or Transmit paths.
•Compliant with jitter transfer template outlined in ITU G.751, G.752, G.755, GR-253 and GR-499-CORE,1995 standards.
•Meets ETSI TBR 24 Jitter Transfer Requirements.
•16 or 32 bits selectable FIFO size.
•Meets the Wander specifications described in T1.105.03b.
•Jitter Attenuators can be disabled.
CONTROL AND DIAGNOSTICS:
•Serial Microprocessor Interface for control and configuration.
•Supports optional internal Transmit Driver Monitoring.
•PRBS error counter register to accumulate errors.
•Supports Local, Remote and Digital Loop-backs.
•Single 3.3 V ± 5% power supply.
•5 V Tolerant I/O.
•Maximum Power Dissipation 1.5W.
•Available in 176 pin LQFP package
•- 40 to 85 Industrial Temperature Range.
SYMBOL |
PARAMETER |
MIN |
MAX |
UNITS |
COMMENTS |
VDD |
Supply Voltage |
-0.5 |
5.0 |
V |
Note 1 |
VIN |
Input Voltage at any Pin |
-0.5 |
5+0.5 |
V |
Note 1 |
IIN |
Input current at any pin |
100 |
mA |
Note 1 | |
STEMP |
Storage Temperature |
-65 |
150 |
Note 1 | |
ATEMP |
Ambient Operating Temperature |
-40 |
85 |
linear airflow 0 ft./min | |
ThetaJA |
Thermal Resistance |
26.6 |
/W |
linear airflow 0 ft./min | |
ThetaJC |
7.2 |
/W |
|||
MLEVL |
Exposure to Moisture |
5 |
level |
EIA/JEDEC JESD22-A112-A | |
ESD |
ESD Rating |
2000 |
V |
Note 2 |
NOTES:
1.Exposure to or operating near the Min or Max values for extended period may cause permanent failure and impair reliability of the device.
2.ESD testing method is per MIL-STD-883D,M-3015.7
Specifications | |
No. ofCH | 4 |
DataRate(s) | DS3, E3, STS-1 |
Clk Rec | Yes |
SH/LH | n/a |
Temp.Range | Ind. |
OpPwr Sup/Max Cur | 3V ±5% |
Pkgs | TQFP-176 |
The XRT75L04 is a four-channel fully integrated Line Interface Unit (LIU) with Jitter Attenuator for E3/DS3/STS-1 applications. It incorporates four independent Receivers, Transmitters and Jitter Attenuators in a single 176 pin LQFP package.
Each channel of the XRT75L04 can be configured to operate in E3 (34.368 MHz), DS3 (44.736 MHz) or STS-1 (51.84 MHz) rates that are independent of each other. Each transmitter can be turned off and tri-stated for redundancy support and for conserving power.
The XRT75L04's differential receivers provide high noise interference margin and are able to receive the data over 1000 feet of cable or with up to 12 dB of cable attenuation.
The XRT75L04 incorporates an advanced crystal-less jitter attenuator per channel that can be selected either in the transmit or receive path. The jitter attenuator performance meets the ETSI TBR-24 and Telcordia GR-499, GR-253 specifications.
The XRT75L04 provides both Serial Microprocessor Interface as well as Hardware mode for programming and control.
The XRT75L04 supports local, remote and digital loop-backs. The XRT75L04 also contains an on-board Pseudo Random Binary Sequence (PRBS) generator and detector with the ability to insert and detect single bit error.