PM5381-BI PMC-Sierra, Inc., PM5381-BI Datasheet - Page 232

• Manufacturer Part Number: PM5381-BI
• Description: ATM UNI, Single Channel ATM PHY Interface for 2488.32Mbps
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000489, Issue 4
Register 0132H: RTTP SECTION Trace Unstable Status
All Reserved bits must be set to their default values for proper operation.
TIUV
Bit
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
The trace identifier unstable status (TIUV) 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 received 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.
Type
R
R
R
R
R
R
R
R
R
R
R
R
Function
Unused
Unused
Unused
Unused
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
TIUV
S/UNI-2488 Telecom Standard Product Datasheet
Default
X
X
X
X
X
X
X
X
X
X
X
X
Released
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