PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
Register 0132H: RTTP SECTION Trace Unstable Status
Bit
Type
Function
Default
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Unused
Unused
Unused
Unused
Reserve
Reserve
Reserve
Reserve
Reserve
Reserve
Reserve
Reserve
Reserve
Reserve
Reserve
TIUV[1]
R
R
R
R
R
R
R
R
R
R
R
R
X
X
X
X
X
X
X
X
X
X
X
X
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
TIUV[1]:
The trace identifier unstable status (TIUV[1]) bit indicates the current status of the TIU defect.
Algorithm 1: TIUV is set to logic 0.
Algorithm 2: TIUV is set to logic 1 when one or more erroneous bytes are detected between
the current message and the previous message in a total of 8 tail trace messages
without any persistent message in between. TIUV is set to logic 0 when a
persistent message is found. A persistent message is found when the same
message is receive for 3 or 5 consecutive multi-frames.
Algorithm 3: TIUV is set to logic 1 when one or more erroneous bytes are detected in three
consecutive sixteen byte windows. The first window starts on the first erroneous
tail trace byte. BYTE_TIUV is set to logic 0 when the same tail trace byte is
received for 48 consecutive frames.
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
184
PMC [ PMC-SIERRA, INC ]
