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TRIBUTARY UNIT PAYLOAD PROCESSOR for 155Mb/s -Xi'an Supermicro Electronic CO., Ltd
   
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Product NameTRIBUTARY UNIT PAYLOAD PROCESSOR for 155Mb/s
categoriesSDH Chips
specifications
ModelSE0131
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Product Description

Description

The SE0131 TUPP SONET/SDH Tributary Unit Payload Processor for 155Mbit/s Interfaces is a monolithic integrated circuit that implements a configurable, multi-channel, payload processor that aligns and monitors performance of SONET virtual tributaries (VTs) or SDH tributary units (TUs).
When configured for SONET compatible operation, the TUPP transfers all incoming tributaries in the three STS-1 synchronous payload envelopes of one STS-3 byte serial streams to the corresponding three STS-1 synchronous payload envelopes of one outgoing STS-3 byte serial streams. Similarly, when configured for SDH compatible operation, the TUPP transfers all incoming tributaries in one AU4 or three AU3 administrative units of an STM-1 byte serial stream to the corresponding one AU4 or three AU3 administrative units of an outgoing STM-1 byte serial stream. The TUPP compensates for plesiochronous relationships between incoming and outgoing higher level (STS-1, AU4, AU3) synchronous payload envelope frame rates through processing of the lower level (VT6, VT2, VT1.5, TU3, TU12, TU11) tributary pointers. The incoming and outgoing data streams are configurable independently.
The TUPP is configurable to process any legal mix of tributaries. Each VT group can be configured to carry any one of the four tributary types (VT1.5, VT2 or VT6) and each TUG2 can be configured to carry any one of three tributary types (TU11, TU12). TUG2s can be multiplexed into a VC3 or a TUG3. Alternatively, each TUG3 can be configured to carry a TU3.
Each TUG3 can be configured to concatenated mode. In concatenated mode, TUG3 can concatenated process three group 1 to 7 TU12 or 1 to 21 TU12 to transfer high speed data.
The TUPP provides useful maintenance functions. They include, for each tributary, detection of loss of pointer, detection of AIS alarm, detection of tributary path signal label mismatch and unstable alarms. The TUPP counts received tributary path BIP-2 errors on a block. The TUPP also allows insertion of tributary path AIS as a consequence of any of the above alarm conditions.
No auxiliary high-speed clocks are required as the TUPP operates from either a single 19.44 MHz or a single 38.88 MHz line rate clock. The TUPP is configured, controlled and monitored via a generic 8-bit microprocessor bus interface.
The TUPP is implemented in low power, +3.3 Volt Core and +3.3 Volt I/O, CMOS technology. It has TTL compatible inputs and outputs and is packaged in a LQFP176 package.
Feature
  • Configurable, multi-channel, payload processor for aligning SONET virtual tributaries (VTs), SDH tributary units(TUs) in an STS-3 or an STM-1 byte serial data stream
  • Transfers all incoming tributaries in the one STS-3 synchronous payload envelopes of an STS-3 byte serial stream to the corresponding three STS-1 synchronous payload envelopes of an outgoing STS-3 byte serial stream
  • Transfers all incoming tributaries in the three STS-1 synchronous payload envelopes of one STS-3 byte serial streams to the corresponding three STS-1 synchronous payload envelopes of one outgoing STS-3 byte serial streams
  • Compensates for plesiochronous relationships between incoming and outgoing higher level (STS-1, AU4, AU3) payload frame rates through processing of the lower level (VT6, VT2, VT1.5, TU3, TU12, or TU11) tributary pointers
  • Provides software configurable offset between the payload frame boundaries and the transport frame boundary on a per STS-3 or STM-1 basis
  • Configurable to process any legal mix of VT1.5, VT2, VT6, TU11, TU12,or TU3 tributaries. Each VT group or TUG2 can be configured to carry one of four tributary types. TUG2s can be multiplexed into VC3s or TUG3s.Each TUG3 can also be configured to carry a single TU3
  • Configurable to process any legal mix of VT1.5, VT2, VT6, TU11, TU12,or TU3 tributaries. Each VT group or TUG2 can be configured to carry one of four tributary types. TUG2s can be multiplexed into VC3s or TUG3s.Each TUG3 can also be configured to carry a single TU3
  • Independently configurable for AU3 or AU4 frame format on incoming and outgoing interfaces
  • Optionally frames to the H4 byte or C1J1V1 in the path overhead to determine tributary multiframe boundaries. Inserts internally generated H4 bytes with leading logic 1 bits into the outgoing administrative units
  • Extracts tributary size (SS) bits of each tributary into internal registers
  • Detects loss of pointer (LOP) and re-acquisition for each tributary
  • Detects tributary path alarm indication signal (AIS) and return to normal state for each tributary
  • Detects tributary elastic store underflow and overflow errors
  • Extracts tributary path signal label for each tributary into internal registers
  • Calculates and compares the tributary path BIP-2 error detection code for each tributary and configurable to accumulate the BIP-2 errors, on block or bit basis, in internal registers
  • Identifies outgoing tributaries that are in AIS state by an output signal. Allows software to force the AIS insertion on a per tributary basis
  • Inserts valid H4 byte and all-zeros fixed stuff bytes on the outgoing stream
  • Verifies parity on the IC1J1 and IPL signals and on the incoming data stream and generates parity on the outgoing data stream
  • The TUPP operates to align tributaries such that they can be switched by the SE0151 TUDX SONET/SDH Tributary Unit Cross-Connect
  • The each TUG3 can be configured to concatenated mode. In concatenated mode, TUG3 can concatenated process three group 1 to 7 TU12 or one group 1 to 21 TU12 to transfer high speed data over SDH
  • Independently configurable incoming and outgoing interfaces that operate either 19.44 MHz STM-1 (STS-3) or the 38.88 MHz half byte interface modes
  • Provides a generic 8-bit microprocessor bus interface for configuration, control, and status monitoring
  • Low power, +3.3 V, CMOS technology, +3.3 V TTL compatible inputs and inputs (5V tolerant)
  • 176 pin Super LQFP package
 
 
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