S/UNI®-8x155 ASSP Telecom Standard Product Data Sheet
Released
Register 0x054, 0x154, 0x254, 0x354, 0x454, 0x554, 0x654, 0x754:
SPTB Expected Path Signal Label
Bit
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Function
EPSL[7]
EPSL[6]
EPSL[5]
EPSL[4]
EPSL[3]
EPSL[2]
EPSL[1]
EPSL[0]
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
0
0
0
0
0
0
EPSL[7:0]:
The EPSL[7:0] bits contain the expected path signal label byte (C2). EPSL[7:0] is
compared with the C2 byte extracted from the receive stream.
When PSLMODE is low, EPSL[7:0] is compared with the accepted path signal label
extracted from the receive stream. A path signal label mismatch (PSLM) is declared if the
accepted PSL differs from the expected PSL. A path signal label match or mismatch is
declared based upon the following table:
Expect
00
Receive
00
Action Declared
Match
00
00
01
01
01
XX
00
01
Mismatch
Mismatch
Mismatch
Match
01
XX
Match
XX
XX
XX
XX
00
01
XX
YY
Mismatch
Match
Match
Mismatch
When PSLMODE is high, EPSL[7:0] is compared with the received C2 bytes extracted
from the receive stream. A path signal label mismatch (PSLM) is declared if 5
consecutively received C2 bytes (other than 0x00) differ from the expected PSL. A path
signal label match or mismatch is declared based upon the following table:
Expect
00
00
00
01
Receive
Action Declared
Unequipped
Mismatch
Mismatch
Unequipped
Match
00
01
XX
00
01
01
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC- 2010299, Issue 2
208
PMC [ PMC-SIERRA, INC ]
