Overview
| Line Interface | DS3/E3 STS-1/ STS-3 STM-1 |
|---|---|
| Protocols | SONET/SDH |
| Bus I/F | n/a |
| System Bus I/F | n/a |
| Pwr Sup | 3.3V |
| Package | TBGA-504 |
The XRT94L31 is a highly integrated SONET/SDH terminator designed for E3/DS3/STS-1 mapping/demapping functions from either the STS-3 or STM-1 data stream. The XRT94L31 interfaces directly to the optical transceiver.
The XRT94L31 processes the section, line and path overhead in the SONET/SDH data stream. The processing of path overhead bytes within the STS-1s or TUG-3s includes 64 bytes for storing the J1 bytes. Path overhead bytes can be accessed through the microprocessor interface or via serial interface.
The XRT94L31 uses the internal E3/DS3 De-Synchronizer circuit with an internal pointer leak algorithm for clock smoothing as well as to remove the jitter due to mapping and pointer movements. These De-Synchronizer circuits do not need any external clock reference for its operation.
The SONET/SDH transmit blocks allow flexible insertion of TOH and POH bytes through both Hardware and Software. Individual POH bytes for the transmitted SONET/SDH signal are mapped either from the XRT94L31 memory map or from external interface. A1, A2 framing pattern, C1 byte and H1, H2 pointer byte are generated.
The SONET/SDH receive blocks receive SONET STS-3 signal or SDH STM-1 signal and perform the necessary transport and path overhead processing.
The XRT94L31 provides a line side APS (Automatic Protection Switching) interface by offering redundant receive serial interface to be switched at the frame boundary.
The XRT94L31 provides 3 mappers for performing STS-1/VC-3 to STS-1/DS3/E3 mapping function, one for each STS-1/DS3/E3 framers.
A PRBS test pattern generation and detection is implemented to measure the bit-error performance.
A general-purpose microprocessor interface is included for control, configuration and monitoring.
- Provides DS3/ E3 mapping/demapping for up to 3 tributaries through SONET STS-1 or SDH AU-3 and/or TUG-3/AU-4 containers
- Generates and terminates SONET/SDH section, line and path layers
- Integrated SERDES with Clock Recovery Circuit
- Provides SONET frame scrambling and descrambling
- Integrated Clock Synthesizer that generates 155 MHz and 77.76 MHz clock from an external 12.96/ 19.44/77.76 MHz reference clock
- Integrated 3 E3/DS3/STS-1 De-Synchronizer circuit that de-jitter gapped clock to meet 0.05UIpp jitter requirements
- Access to Line or Section DCC
- Level 2 Performance Monitoring for E3 and DS3
- Supports mixing of STS-1E and DS3 or E3 and DS3 tributaries
- E3 and DS3 framers for both Transmit and Receive directions
- Complete Transport/Section Overhead Processing and generation per Telcordia and ITU standards
- Full line APS support for redundancy applications
- Loopback support for both SONET/SDH as well as E3/DS3/STS-1
- Boundary scan capability with JTAG IEEE 1149
- 8-bit microprocessor interface
- 3.3V ± 5% Power Supply; 5V input signal tolerance
- -40°C to +85°C Operating Temperature Range
- Available in a 504 Ball TBGA package
- Pb-Free, RoHS Compliant Versions Offered
- Network switches
- Add/Drop Multiplexer
- W-DCS Digital Cross Connect Systems
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Data Sheets | XRT94L31 3-Channel DS3/E3/STS-1 to STS-3/STM-1 Mapper–SDH Register MAP | 1.0.0 | March 2007 | 3.4 MB |
| Data Sheets | XRT94L31 3-Channel DS3/E3/STS-1 to STS-3/STM-1 Mapper–SONET Register MAP | 1.0.0 | March 2007 | 3.3 MB |
| Data Sheets | XRT94L31 3-Channel DS3/E3/STS-1 to STS-3/STM-1 Mapper IC | 1.0.1 | March 2007 | 1.9 MB |
Parts & Purchasing
| Part Number | Pkg Code | Status | Suggested Replacement | PDN |
|---|---|---|---|---|
| XRT94L31IB | TBGA504 | OBS | ||
| XRT94L31IB-L | TBGA504 | OBS |
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Packaging
| Pkg Code | Details | Quantities | Dimensions |
|---|---|---|---|
| TBGA504 |
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Notifications
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