PM5381-BI PMC-Sierra, Inc., PM5381-BI Datasheet - Page 323

• 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 0702H: RTTP PATH Trace Unstable Status
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
323