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
head of the capture page. This enables the section trace message to be
appropriately aligned for interpretation by the microprocessor. Synchronization
may be disabled, in which case, the memory acts as a circular buffer.
9.11 Transmit Section Trace Buffer
The transmit portion of the SONET Section Trace Buffer sources the section
trace identifier message (J0) for the Transmit Transport Overhead Access block.
The length of the trace message is selectable between 16 bytes and 64 bytes.
The section trace buffer contains one page of transmit trace identifier message
memory. Identifier message data bytes are written by the microprocessor into
the message buffer and delivered serially to the Transport Overhead Access
block for insertion in the transmit stream. When the microprocessor is updating
the transmit page buffer, the buffer may be programmed to transmit null
characters to prevent transmission of partial messages.
9.12 Microprocessor Interface
The Microprocessor Interface Block provides the logic required to interface the
normal mode and test mode registers within the STXC to a generic
microprocessor bus. The normal mode registers are used during normal
operation to configure and monitor the STXC while the test mode registers are
used to enhance the testability of the STXC.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 43
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