Electronic Components Datasheet Search |
|
XRT94L33 Datasheet(PDF) 1 Page - Exar Corporation |
|
XRT94L33 Datasheet(HTML) 1 Page - Exar Corporation |
1 / 2 page Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com xr xr PRELIMINARY XRT94L33 APRIL 2002 REV. P1.0.0 GENERAL DESCRIPTION The XRT94L33 is a highly integrated SONET/SDH terminator designed for E3/DS3/STS-1 mapping/de- mapping functions from either the STS-3 or STM-1 data stream. The XRT94L33 interfaces directly to the optical transceiver The XRT94L33 processes the section, line and path overhead in the SONET/SDH data stream and also performs ATM and PPP PHY-layer processing. 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 XRT94L33 uses the internal E3/DS3 De-Syn- chronizer circuit with an internal pointer leak algo- rithm for clock smoothing as well as to remove the jit- ter 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 inser- tion of TOH and POH bytes through both Hardware and Software. Individual POH bytes for the transmit- ted SONET/SDH signal are mapped either from the XRT94L33 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 XRT94L33 provides a line side APS (Automatic Protection Switching) interface by offering redundant receive serial interface to be switched at the frame boundary. The XRT94L33 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 im- plemented to measure the bit-error performance. A general purpose microprocessor interface is includ- ed for control, configuration and monitoring. FEATURES • Provides DS3/ E3 mapping/de-mapping 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 sec- tion,line and path layers • Integrated SERDES with Clock Recovery Circuit • Provides SONET frame scrambling and descram- bling • 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 • UTOPIA Level 2 interface for ATM or level 2P for Packets • E3 and DS3 framers for both Transmit and Receive directions • Complete Transport/Section Overhead Processing and generation per Telcordia and ITU standards • Single PHY and Multi-PHY operations supported • 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 • 3.3 V ± 5% Power Supply; 5 V input signal toler- ance • -40°C to +85°C Operating Temperature Range • Available in a 504 Ball TBGA package APPLICATIONS • Network switches • Add/Drop Multiplexer • W-DCS Digital Cross Connect Systems |
Similar Part No. - XRT94L33 |
|
Similar Description - XRT94L33 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |