PM5364 pmc-sierra, PM5364 Datasheet - Page 218

• Manufacturer Part Number: PM5364
• Description: Tupp 2488 Assp Telecom Standard
• Manufacturer: pmc-sierra

13.10.12
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2011334, Issue 7
Figure 55 64-byte Trail trace Message, Sync on CR/LF
To avoid declaring an unstable/mismatch defect when the transmitter updates the trail trace
message, the RTTP considers an all zeros message to be matched. An all zeros captured
message in algorithm 1 and an all zeros accepted message in algorithm 2 are not validated
against the expected message but are considered match, i.e. a match is declared when the
captured or accepted message is all zeros regardless of the expected message. This feature can
be turned off by setting the ZEROEN register bit to logic one.
Note: The transmitter is required to force an all zeros trail trace message when the trail trace
message is updated.
SARC-48 Operation
Receive Path Processing
The SARC-48 Receive Path processes all path defects detected by the overhead processor and
prepares the consequent action indications. Four consequent action indications are defined: the
receive path alarm (RPALM, which is connected to chip output HRALM), the receive path AIS
insertion (RPAISINS) which is forwarded to downstream Payload Processor Subsystem, the
transmit path REI insertion (TPREIINS[3:0]), and the transmit path ERDI insertion
(TPERDIINS[2:0]) indications which are forwarded to the transmit THPP_R block.
The first step for generating consequent action indications is to monitor the ALLPAISC, PAIS,
PAISC, PLOP, and PLOPC signals in order to generate PAISPTR and PLOPTR defects. With
the PAISPTR and PLOPTR defects, the Receive Path can prepare the receive path alarm
(RPALM), the receive path AIS insertion (RPAISINS), and the transmit path ERDI insertion
(TPERDIINS[2:0]) indications.
PAISPTR alarms are declared according to Equation 2. PAISPTRCFG[1:0] bits exist for each
path. A path AIS defect is declared when the selected Equation 1 is true. A path AIS defect is
removed when the selected Equation 1 is false. An interrupt is generated when a PAISPTR
defect is declared and also when a PAISPTR defect is removed. For slave slices in concatenated
payloads, the PAISPTRCFG[1:0] should be left at 00b.
63th BYTE
64th BYTE
2nd BYTE
1st BYTE
ALGO = 01/10 , LENGTH16 = 0 , SYNC_CRLF = 1
...
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
CR
LF
40H, 80H, C0H
41H, 81H, C1H
...
7EH, BEH, FEH
7FH, BFH, FFH
Released
218