Intel
®
Server System P4000CP Power System Options Intel
®
Server Board S2600CP and Server System P4000CP TPS
Revision 1.1
Intel order number G26942-003
148
13.3.6.3 SMBAlert# Signal
This signal indicates that the power supply is experiencing a problem that the user should
investigate. This shall be asserted due to Critical events or Warning events. The signal shall
activate in the case of critical component temperature reached a warning threshold (see sec.
4.10), general failure, over-current, over-voltage, under-voltage, failed fan. This signal may also
indicate the power supply is reaching its end of life or is operating in an environment exceeding
the specified limits.
This signal is to be asserted in parallel with LED turning solid Amber or blink Amber.
Table 107. SMBAlert# Signal Characteristics
Signal Type (Active Low)
Open collector/drain output from power supply. Pull-
up to VSB located in system.
Alert# = High OK
Alert# = Low Power Alert to system
MIN MAX
Logic level low voltage, Isink=4 mA 0 V 0.4 V
Logic level high voltage, Isink=50 A
3.46 V
Sink current, Alert# = low 4 mA
Sink current, Alert# = high
50
A
Alert# rise and fall time
100
s
13.3.7 Thermal CLST
The power supply shall assert the SMBAlert signal when a temperature sensor crosses a
warning threshold. Refer to the Intel
®
Common Hardware and Firmware Requirements for
CRPS Power Supplier for detailed requirements.
13.3.8 Power Supply Diagnostic “Black Box”
The power supply saves the latest PMBus data and other pertinent data into nonvolatile
memory when a critical event shuts down the power supply. This data is accessible by the
SMBus interface with an external source providing power to the 12Vstby output.
Refer to the Intel “Common Hardware and Firmware Requirements for CRPS Power Supplier”
for detailed requirements.
13.3.9 Firmware Uploader
The power supply has the capability to update its firmware by the PMBus interface while it is in
standby mode. This FW can be updated when in the system and in standby mode and outside
the system with power applied to the 12Vstby pins.
Refer to the Intel Common Hardware and Firmware Requirements for CRPS Power Supplier for
detailed requirements.
13.4 Higer Power Common Redundant Power Distribution Board (PDB)
The Power Distribution Board (PDB) for lntel
®
Server Chassis P4000M supports the Common
Redundant power supply in a 1+1 redundant configuration. The PDB is designed to plug directly
to the output connector of the PS and it contains 3 DC/DC power converters to produce other
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