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AT8901
Software Description
Page 4 - 15
AT8901 User Guide
4.4.5
LEDs
For LED positions on the front plane refer to Chapter 3, section 3.10., Display Elements.
4.4.5.1
Hot Swap LED (Blue LED)
The AT8901 Hub Board supports a blue Hot Swap LED mounted on the front panel. This LED
indicates when it is safe to remove the Hub from the chassis. The on-board IPMC drives this
LED to indicate the hot swap state. The following states are possible:
4.4.5.2
Out-Of-Service (OOS) LED (ATCA LED1)
The AT8901 supports a red Out of Service LED mounted on the front panel. The position of this
LED is near the top handle besides the blue Hot Swap led. The on-board FWUM or the IPMC
can drive this LED to indicate the service state of the IPMC. The OEM application can also drive
this LED using the PICMG LED control APIs. The following states are possible:
Other application defined LED usage may be implemented.
The AT8901 AMC.0 carrier also implements the OOS LED “Short blink” mode for its Advanced-
MC mates on detection of “power denied” conditions.
As per AMC.0, if the AMC current draw requirements exceed AMC.0 carrier power budget, the
AT8901 will keep the AMC in M1 state with the blue Hot Swap LED in the ON state.
Table 4-4: LED state
LED state
Description
OFF
Board is in M4 state, normal state when board is in operation.
ON
Ready for hot swap
Short blink
Board is in M5 state. Deactivation in progress
Long blink
Activation in progress.
Table 4-5: OOS LED state
LED state
Description
ON
Out of service condition, the IPMC is hold in reset
OFF
Normal/Idle board is in service, unless blue led is on
Blink (50/50)
The FUM is programming the IPMC due to a firmware update or a rollback
Short blink
Power denied condition detected:
Payload has been left in M3 state for more than 30 secs or SetPowerLevel
‘0‘ has been received while in M2 or M3 state
LED state
Description
Short blink
Power denied condition detected:
AMC current draw requirements exceed carrier power budget or SetPower-
Level ‘0‘ has been received while in M2 or M3 state
Содержание AT8901
Страница 1: ...AT8901 USER GUIDE AdvancedTCA M5301_TECH_2 Manual ID 1 0 Revision Index 1 June 2006 Date of Issue...
Страница 13: ...AT8901 Introduction Page 1 1 AT8901 User Guide Introduction Chapter 1...
Страница 26: ...Installation Chapter 2 Page 2 1 AT8901 User Guide AT8901 Installation...
Страница 32: ...Hardware Description Chapter 3 Page 3 1 AT8901 User Guide AT8901 Hardware Description...
Страница 53: ...Software Description Page 4 1 AT8901 User Guide AT8901 Software Description Chapter 4...
Страница 75: ...AT8901 Getting Help Page A 1 AT8901 User Guide Getting Help Appendix A...