Artesyn ATCA-8330 Installation and Use (April 2015) - Manual (Page 119)

Functional Description
ATCA-8330 Installation and Use (6806800S82B) 119
The IPMC supports the initiation of a graceful shutdown of the host CPU. The IPMC can force
the CPU to reset. It also controls the power and reset of the payload. As part of the power
control logic circuitry is provided to control the correct power-up and power-down sequencing
of all payload specific power domains to prevent latch-up and damage of devices.
The IPMC provides a watchdog that supervises the payload. If enabled, the payload software
needs to re-trigger the watchdog to prevent a time-out. A watchdog time-out can generate an
Non-Maskable Interrupt (NMI), a payload reset, or disabling/cycling of the payload power. The
watchdog settings, including enable/disable, can be changed by payload software (setup
menu). Time-out values can be selected from as short as seconds to as long as minutes. The
IPMC is supervised by a separate hardware watchdog, which cannot be disabled. IPMC
firmware re-triggers the Watchdog timer. The IPMC monitors the Port 80 POST codes
generated by the payload CPU. The IPMC is connected to various sensors on the blade that
provide temperature sensor readings at all major devices and voltage sensor readings of all
major voltages. The IPMC monitors reset events caused by devices like Watchdog, IPMI
command, and reset button. The FRU information of the various modules including front
board, RTM, and other modules can be read via the IPMC and if necessary upgraded through
IPMC. The IPMC features Serial over LAN (SOL) for the payload CPU serial console. The SOL
interface is available via the ATCA Base I/F. SOL is activated by specific IPMI commands.
The following table shows the I2C-BUS assignment for the H8S-IPMI controller:
Table 5-6 ATCA-8330 H8S I2C Bus #4
Device Type Device Name Bus Controller Address
Temp Sensor Air Inlet LM75 Privat IPMB/I2C Bus #4 IPMC H8S 0x90
Temp Sensor Air Outlet LM75 Privat IPMB/I2C Bus #4 IPMC H8S 0x92
Power Input Module PIM-4328 Privat IPMB/I2C Bus #4 IPMC H8S 0x5E
SEL (System Event Log) 24C02 Privat IPMB/I2C Bus #4 IPMC H8S 0xA4
FRU EEPROM 24C02 Privat IPMB/I2C Bus #4 IPMC H8S 0xA2
PWR SEQ CPLS LCMX0640C Privat IPMB/I2C Bus #4 IPMC H8S 0xFE
SPD on DIMM 5 DDR3SPD Privat IPMB/I2C Bus #4 IPMC H8S 0xA6/0x36
SPD on DIMM 6 DDR3SPD Privat IPMB/I2C Bus #4 IPMC H8S 0xA8/0x38
SPD on DIMM 7 DDR3SPD Privat IPMB/I2C Bus #4 IPMC H8S 0xAA/0x3A
SPD on DIMM 8 DDR3SPD Privat IPMB/I2C Bus #4 IPMC H8S 0xAC/0x3C
SPD on DIMM 9 DDR3SPD Privat IPMB/I2C Bus #4 IPMC H8S 0xAE/0x3E