Motorola PowerQUICC II MPC8280 Series Reference Manual page 1270

IMA Software Interface and Requirements
• Establishing their parameters
• Checking for defects
• On-the-fly insertion into data structures
34.5.3.10 Failure Alarms
• React to errors signalled in received ICP cells
• React to physical layer errors
• Monitor persistence of errors to determine alarm condition.
• Report receive defects within 2M cells of entering defect state
• Signal upper-layer software
34.5.3.11 Test Pattern Control
• Initiate transmit test patterns in the group's transmit ICP cells (via TXTC and
TXTP), and monitor response in the receive ICP cells of the associated receive
group
• Respond to test patterns by:
— Recognizing test pattern activity in the received ICP cells
— Locating the Tx Test Pattern field in the ICP cell of the test link. (Because the
SCCI field changes as part of the test pattern generation by the far end, the cell
will necessarily be among the received ICP cells. Locate the latest ICP cell with
a LID matching the Tx LID of the test link).
— Signalling back via the transmit ICP cells of the associated transmit group, by
modifying the transmit ICP cell template appropriately
34.5.3.12 Performance Parameter Measurement and Reporting
• Establish timers to correlate errors with time intervals (e.g. to determine severely
errorred seconds (SES) or unusable seconds (UUS))
• Maintain statistics
• Enable/disable receive and transmit event counters according to severely errorred
seconds (SES) condition via ILRCNTL[SES] and ILTCNTL[SES]
34.5.3.13 SNMP MIBs
Control interface and statistics information should be provided per the SNMP MIB
definition for IMA.
34-60
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MPC8280 PowerQUICC II Family Reference Manual
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