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CP3923 User Guide
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The Unit Computer is equipped with following peripherals:
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512MB DDR2 Memory with 400MHz data rate and ECC
•
64MB NOR Flash Memory for two Firmware images
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1024MB NAND Flash for high volume storage (TFTP Server applications) with high frequency read
•
Real Time Clock with integrated oscillator, powered by a capacitor with up to 1 week of back up power
3.3
IPMI
The CP3923 board supports an intelligent hardware management system, based on the Intelligent Platform Management
Interface Specification 1.5. The hardware management system provides the ability to manage the power, cooling and inter-
connect needs of intelligent devices, to monitor events and to log events to a central repository intelligent FRU (Field
Replaceable Unit).
The Peripheral Manager is a 16-bit microcontroller with on chip memory of 512 Kbyte Flash and 32 Kbyte SRAM. It provides
several I²C interfaces for access to sensors and IPMB busses. Board voltage, current and temperature monitoring are
accomplished through internal and external sensors.
The following section provides a listing of all inputs to the IPMI subsystem for H/W supervision.
•
Thermal Sensors
•
Reset status of the Unit Computer
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Power Status, the PM reads all supply voltages and status signals for possible failure and value reporting
•
Ethernet Link status
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SFP status and control signals
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CompactPCI Handle switch (Hot Swap, not on CP3923-RC)
The PM uses the following outputs to control the CP3923:
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Power and Reset control of the payload
•
LED HEALTHY (not on CP3923-RC)
•
Unit Computer reset
The Peripheral Manager provides additional feature and is equipped with following peripherals:
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The FRU Data Flash device contains the CP3923 FRU information
•
Internal watchdog monitoring PM operation
•
The external watchdog is implemented in glue logic. The PM will be reset if its alive signal fails. The watchdog is dis-
abled in case of a local update.
•
CompactPCI IPMB-O interface
