3-18
AlphaServer DS20 Service Manual
3.9
Function Register
The Function Register generates an interrupt on the I
2
C bus if one of the critical
functions monitored (power, temperature, fan operation) goes beyond
predetermined limits. When such an interrupt is generated, the contents of bits
<0, 1, 2, and 5> in the Failure Register are frozen. The system will shut down 30
seconds after the interrupt is posted. The results of reading this register are
displayed by the SRM show power console command.
I2C Bus Address
0111001
Access
RO
1
2
3
4
5
6
7
0
PK1421-99
TEMP_OK
Reserved
CPUFANS_OK
FANTRAY_FAIL_H
PS1_OK_L
SYSFAN_OK
PS0_OK_L
Reserved
0
0
