PMC-Sierra, Inc.
PM73488 QSE
L
PMC-980616
Issue 3
5 Gbit/s ATMSwitch Fabric Element
Released
Datasheet
54
The failure conditions detected by the ORT on
c
, and the actions taken are summarized in Table 10.
5. 7. QSE Interface, Transmit Data Direction
A QSE Transmit interface consists of
e
and
f
in Figure 33 on page 51. Where
e
refers to each of the 32
SE_SOC_OUT and SE_D_OUT(3:0) data ports, and
f
refers to the corresponding BP_ACK_IN signals in the QSE.
Table 10. Failure Conditions, QSE Receive Interface
Fault Detected on c
Action Taken
Comment
Cannot lock to special coding
and guaranteed transitions on
SE_SOC_IN.
No BP sent out on
d
. All data discarded.
SE_INPUT_PORT_FAIL signaled to the
microprocessor.
Withholding BP on
d
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
d
. 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
d
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
d
. All data discarded.
SE_INPUT_PORT_FAIL signaled to the
microprocessor.
Withholding BP on
d
signals to the
previous stage that the port should not
be used.
Parity fail.
ONACK sent out on
d
for unicast data
.
Multicast data dropped.
PARITY_FAIL signaled to the
microprocessor.
QSE does not necessarily have time to
drop cell by the time it has detected a
parity error.