Sun Microsystems Netra CP3060, User Manual

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Chapter 5 Hardware and Functional Descriptions 5-25
thresholds listed in
TABLE 5-5
. Also, if the temperature of either CPU goes beyond the
Emergency H8 Shutdown
value listed in
TABLE 5-5
, the H8 initiates a blade server
shutdown independent of the shelf manager.
The H8 temperature alarm equivalents are:
Minor Alarm = Upper Non Critical (UNC)
Major Alarm = Upper Critical (UC)
Critical Alarm = Upper Non Recoverable (UNR)
Emergency H8 Shutdown = Emergency H8 Shutdown (EMR)
Caution – These voltage and temperature thresholds should not be changed under
normal operating conditions.
5.2 Power-on Sequence
The following list describes the power-on sequence:
1. Sun Netra CP3060 blade server installed into a midplane slot in ATCA shelf
2. Aux power applied to IPMC and the FPGA
3. IPMC enables front-end DC/DC (48V
–
12V converter)
4. IPMC checks power ok from front-end DC/DC
5. IPMC enables all voltage rails, and proceeds. if DC_OK
6. MPC boots
7. MPC becomes operational
8. IPMC asserts
SYSTEM_POK_ENABLE
in FPGA CSRs.
TABLE 5-5
CPU Temperature Alarms
Sensor
Minor Alarm
(UNC) Major Alarm
(UC) Critical Alarm
(UNR) Emergency H8
Shutdown
CPU Temp 1 >80
°
C >90
°
C > 102
°
C > 105
°
C
CPU Temp 2 >80
°
C >90
°
C > 102
°
C > 105
°
C
Blade Server
Temp >60
°
C >70
°
C > 88
°
C > 90
°
C