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參數(shù)資料
| 型號： | PM73488 |
| 廠商： | PMC-SIERRA INC |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | 5 Gbit/s ATM Switch Fabric Element |
| 中文描述： | ATM SWITCHING CIRCUIT, PBGA596 |
| 封裝： | EPBGA-596 |
| 文件頁數(shù)： | 54/135頁 |
| 文件大小： | 1735K |
| 代理商： | PM73488 |
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PMC-Sierra, Inc.
PM73488 QSE
L
PMC-980616
Issue 3
5 Gbit/s ATMSwitch Fabric Element
Released
Datasheet
56
The failure conditions detected by the ORT on
g
, and the actions taken are summarized in Table 12.
5. 9. Types of Failures and Their Manifestation
Possible faults, the effects and how they affect the network are shown in Table 13.
Table 12. Failure Conditions, Switch Fabric-to-ORT Interface
Fault Detected on g
Action Taken
Comment
Cannot lock to special coding
and guaranteed transitions on
SE_SOC_IN.
No BP sent out on
h
. All data discarded.
SE_INPUT_PORT_FAIL signaled to the
microprocessor.
Withholding BP on
h
signals to the
previous stage that the port should not
be used.
Invalid cell present coding on
SE_D_IN(3:0).
No BP sent out on
h
. All data discarded.
SE_INPUT_PORT_FAIL signaled to the
microprocessor.
Most likely due to unconnected input
lines that are pulled up or down.
Withholding BP on
h
signals to the
previous stage that the port should not
be used.
Bad idle cell coding on
SE_D_IN(3:0).
No BP sent out on
h
. All data discarded.
SE_INPUT_PORT_FAIL signaled to the
microprocessor.
Withholding BP on
h
signals to the
previous stage that the port should not
be used.
Parity fail.
ACK sent out on
h
.
Parity errored cell dropped.
TX_PARITY_FAIL signaled to the
microprocessor.
ACK already sent by the time the QRT
has detected a parity error. Note that in
this case we have ACKed a cell that was
dropped.
Table 13. Faults
Fault
Manifestation
Effect on Network
Wire Connection
Data line from SE_D(3:0) stuck at 0
or 1.
Invalid idle cell, with some
10/01 fail and parity error.
Port shut down on receipt of first bad idle cell
until condition is fixed, as port failure is sent back
to source of data by the lack of BP indication.
SE_SOC line stuck at 0 or 1.
Loss of lock on special
coding on SE_SOC_IN.
Port shut down until condition is fixed, as port
failure is sent back to source of data by the lack of
BP indication.
BP_ACK line stuck at 0 or 1.
Loss of lock on special
coding on BP_ACK_IN.
Port shut down until the condition is fixed.
Bridging fault within a port.
Invalid idle cell, with some
10/01 fail and parity error.
Port shut down on receipt of first bad idle cell
until condition is fixed, as port failure is sent back
to source of data by the lack of BP indication.
QRT and QSE Port Failures
Loss of lock on special
coding on SE_SOC_IN.
Port shut down until condition is fixed, as port
failure is sent back to source of data by the lack of
BP indication.
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