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FEATURES

The TUPP+622 chip offers the following features:

? A configurable, multi-channel, payload processor for alignment of SONET Virtual Tributaries or SDH Tributary Units in an STS-12/STM-4 or four STS-3/STM-1 byte serial data streams. Configurable to process any legal mix of tributaries.

? Provides independently-configurable AU3/AU4 frame format on incoming and outgoing directions.

? Compensates for pleisiochronous relationships between incoming and outgoing higher level (STS-1 to AU3) synchronous payload envelope frame rates through processing of the lower level (VT6 to TU11) tributary pointers.

? Provides for multiframe synchronization or ring closure at the head-end node in a SONET/SDH ring.

? Optionally frames to the H4 byte in the Path overhead to determine tributary multiframe boundaries.

? Inserts valid pointers, and all-zeros transport overhead bytes on the outgoing stream with valid “Telecombus” control signals.

? Independently-configurable incoming and outgoing interfaces that operate in 19.44 MHz or 77.76 MHz byte interface modes.

? Provides a standard JTAG test port for boundary scan board test purposes.

? Provides a generic 8-bit microprocessor bus interface.

? Low power 2.5V CMOS core logic/3.3V TTL compatible inputs and outputs

? Available in a 304-pin SBGA package.

? Supports industrial temperature range (-40°C to 85°C) operation.

? Extracts and serializes the entire tributary Path overhead of each tributary.

? Detects tributary elastic store underflow and overflow errors.

? Stores and processes 16-byte or 64-byte format tributary Path trace messages (tributary trail trace identifiers). Detects tributary Path Trace Mismatch and unstable alarms.

? Detects tributary Path Signal Label Mismatch and unstable alarms.

? Extracts tributary Path signal label into internal registers and detects Change of Tributary Path Signal Label events for each tributary.

? Detects tributary unequipped defect, tributary Path Defect Indication, and the assertion and removal of tributary extended Remote Defect Indications.

? Extracts and stores tributary size bits.

? Calculates and compares the tributary Path BIP-2 error detection code.

Accumulates the BIP-2 errors and tributary Path Remote Error Indications on a block or bit basis.

APPLICATIONS

Use the TUPP+622 chip in the following applications:

? SONET/SDH Add/Drop and Terminal Multiplexers

? SONET/SDH Broadband Cross-Connects

? SONET/SDH and ATM Test Equipment