PM5364 pmc-sierra, PM5364 Datasheet - Page 104
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PM5364
Manufacturer Part Number
PM5364
Description
Tupp 2488 Assp Telecom Standard
Manufacturer
pmc-sierra
Datasheet
1.PM5364.pdf
(306 pages)
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Part Number:
PM5364-BI
Manufacturer:
PMC
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20 000
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Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2011334, Issue 7
Trail trace Algorithm 1
This algorithm captures, synchronizes, and validates the trail trace message.
The current trail trace message is stored in the captured page. Each message can be configured
to synchronize when receiving either a byte with its MSB high, or on the CR/LF (CR = 0Dh, LF
= 0Ah) ASCII characters of the message. If the RTTP synchronizes on the MSB of the message,
the byte with its MSB set high is placed in the first location (position 0) of the captured page. If
the RTTP synchronizes on the CR/LF (CR = 0Dh, LF = 0Ah) characters of the message, the LF
sync byte is placed at the last location of the message (position 15 or 63), and the following byte
is placed in the first location (position 0) of the captured page.
A match trail trace message is declared when 16 of the last 20 messages match the expected
message. A mismatch trail trace message is declared when none of the last 20 messages matches
the expected message. The expected trail trace message is a static message written in the
expected page by an external microprocessor.
Trail trace Algorithm 2
This algorithm captures, synchronizes, monitors persistency, monitors stability, and validates
the trail trace message.
The current trail trace message is stored in the captured page. Each message can be configured
to synchronize when receiving either a byte with its MSB high, or on the CR/LF (CR = 0Dh, LF
= 0Ah) ASCII characters of the message. If the RTTP synchronizes on the MSB of the message,
the byte with its MSB set high is placed in the first location (position 0) of the captured page. If
the RTTP synchronizes on the CR/LF (CR = 0Dh, LF = 0Ah) characters of the message, the LF
sync byte is placed at the last location of the message (position 15 or 63), and the following byte
is placed in the first location (position 0) of the captured page.
A persistent trail trace message is declared when an identical message is received for 3 or 5
consecutive messages (16 or 64 frames). A persistent message becomes the accepted message.
The accepted message is stored in the accepted page.
A stable trail trace message is declared when a persistent message is received. An unstable trail
trace message is declared when one or more erroneous bytes are detected between the current
message and the previous message in a total of eight trail trace messages without any persistent
message in between.
A match trail trace message is declared when the accepted message matches the expected
message. A mismatch trail trace message is declared when the accepted message does not match
the expected message. The expected message is a static message written in the expected page by
an external microprocessor.
Trail trace Algorithm 3
This algorithm only monitors stability on the trail trace byte.
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
Released
104
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