PMC-Sierra PM5358 S/UNI 4x622 Section Overhead, Line Overhead, Path Overhead, Payload Processor

PM5358 S/UNI-4x622 Driver Manual

Software Architecture

Section Overhead

The Section Overhead section provides functions to control and monitor the section overhead processing. Read / Write access is given to the section trace message (J0). This message is compared with a configurable reference and mismatches are reported. Section BIP-8 (B1) errors are accumulated in a counter that can be read. Section overhead alarms are detected and reported. For diagnostic purposes, errors can be introduced in the section overhead bytes.

Line Overhead

The Line Overhead section provides functions to configure and monitor the line overhead on both the receive and transmit sides. Read / Write access is given to the APS bytes (K1 and K2) and most other overhead bytes. Line BIP-8 (B2) errors are accumulated in a counter that can be read. Line overhead alarms are detected and reported. For diagnostic purposes, errors can be introduced in the line overhead bytes. Additional functions are provided to automatically insert line RDI and line AIS.

Path Overhead

The Path Overhead section provides functions to configure and monitor the path overhead on both the receive and transmit sides. Read / Write access is given to the path trace message (J1) and the path signal label (C2). Both are compared with a configurable reference and mismatches are reported. Path BIP-8 (B3) errors and REI are accumulated in a counter that can be read. Path overhead alarms are detected and reported. For diagnostic purposes, errors can be introduced in the path overhead bytes. Additional functions are provided to automatically insert path AIS, and force generation of individual outgoing justification events.

Payload Processor

The Payload Processor section provides functions to configuring the payload for ATM or POS processing. Function is provided to configure ATM/POS processing.

Interface Configuration

The Interface Configuration section provides functions to configure the FIFO, line and system side interface for ATM or POS mode. Functions are provided for FIFO management to separate the line side timing from the higher layer ATM/POS link layer timing. The Line interface is responsible for receive/transmit line clock configuration. The System interface is responsible for configuring the system to UTOPIA Level 3 or POS-PHY Level 3 interface for either ATM or POS application.

APS Configuration

The APS Configuration section provides function to configure the operating mode for the device to either a protect or working mate in a APS failover condition.

Proprietary and Confidential to PMC-Sierra, Inc.	18
Document ID: PMC-2010419, Issue 1