PM5343STXC View Datasheet(PDF) - PMC-Sierra
Part Name
Description
MFG CO.
'PM5343STXC' PDF : 198 Pages View PDF
DATA SHEET
PMC-930303
ISSUE 6
PM5343 STXC
SONET/SDH TRANSPORT OVERHEAD TRANSCEIVER
The line level far end block error byte (M1) is extracted and accumulated in an
internal counter. Registers are provided that allow accumulated line REI events
to be read out at intervals of up to one second duration. Bits 2 through 8 of the
Z2 byte are used for the line REI function. For STS-1 streams, the line REI byte
has 9 legal values (namely 00H - 08H) representing 0 to 8 REI events. For STS-
3 streams, the line REI byte has 25 legal values (namely 00H - 18H)
representing 0 to 24 REI events. Illegal Z2 values are interpreted as zero errors.
An interrupt output is provided that may be activated by declaration or removal of
line AIS, line RDI, protection switching byte failure alarm, a change of APS code
value, a single B2 error event, or a single line REI event. Each interrupt source is
individually maskable.
9.4 Receive Transport Overhead Access
The Receive Transport Overhead Access block (RTOH) extracts the entire
receive transport overhead on the RTOH, along with the 5.184 MHz or 1.728
MHz transport overhead clock, RTOHCLK, and the transport overhead frame
position, RTOHFP, allowing identification of the bit positions in the transport
overhead stream.
9.5 Ring Control Port
The Transmit and Receive Ring Control Ports provide bit serial access to section
and line layer alarm and maintenance signal status and control. These ports are
useful in ring-based add drop multiplexer applications where alarm status and
maintenance signal insertion control must be passed between separate STXCs
(possibly residing on separate cards). Each ring control port consists of three
signals: clock, data and frame position. It is intended that the clock, data and
frame position outputs of the receive ring control port are connected directly to
the clock, data and frame position inputs of the transmit ring control port on the
mate STXC. The alarm status and maintenance signal control information that is
passed on the ring control ports consists of
• Filtered APS (K1 and K2) byte values
• Change of filtered APS byte value status
• Protection switch byte failure alarm status
• Change of protection switch byte failure alarm status
• Insert the line RDI maintenance signal in the mate STXC
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 39
Share Link: 
