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PM5358 S/UNI-4x622 Driver Manual
Software Architecture
Proprietary and Confidential to PMC-Sierra, Inc. 18
Document ID: PMC-2010419, Issue 1
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.