參數(shù)資料
型號： pentium II xeon processor
廠商： Intel Corp.
英文描述： pentium II xeon processor at 400 and 450 MHZ(工作頻率400和450兆赫茲奔II處理器)
中文描述： 奔騰II至強(qiáng)處理器400和450兆赫（工作頻率400和450兆赫茲奔二處理器）
文件頁數(shù)： 49/97頁
文件大?。?/td> 978K
代理商： PENTIUM II XEON PROCESSOR
E
PENTIUM II XEON PROCESSOR AT 400 AND 450 MHZ
49
12/15/98 5:14 PM 24377002.doc
4.3.6.
THERMAL SENSORS REGISTERS
4.3.6.1.
Thermal Reference Registers
The processor core and thermal sensor internal
thermal reference registers contain the thermal
reference value of the thermal sensor and the
processor core thermal diodes. This value ranges
from +127 to -128 decimal and is expressed as a
two’s complement, eight-bit number. These registers
are
saturating,
i.e.,
values
represented at 127 decimal, and values below -128
are represented as -128 decimal.
above
127
are
4.3.6.2.
Thermal Limit Registers
The thermal sensor has two thermal limit registers;
they define high and low limits for the processor core
thermal diode. The encoding for these registers is the
same as for the thermal reference registers. If the
diode thermal value equals or exceeds one of its
limits, then its alarm bit in the Status Register is
triggered.
4.3.6.3.
Status Register
The status register shown in Table 33 indicates
which (if any) thermal value thresholds have been
exceeded. It also indicates if a conversion is in
progress or if an open circuit has been detected in
the processor core thermal diode connection. Once
set, alarm bits stay set until they are cleared by a
status register read. A successful read to the status
register will clear any alarm bits that may have been
set, unless the alarm condition persists.
4.3.6.4.
Configuration Register
The configuration register controls the operating
mode (standby vs. auto-convert) of the thermal
sensor.
Table 34
shows
configuration register. If the RUN/STOP bit is set
(high) then the thermal sensor immediately stops
converting and enters standby mode. The thermal
sensor will still perform analog to digital conversions
in standby mode when it receives a one-shot
command. If the RUN/STOP bit is clear (low) then
the thermal sensor enters auto-conversion mode.
the
format
of
the
Table 33. Thermal Sensor Status Register
Bit
Name
Function
7 (MSB)
BUSY
A one indicates that the device’s analog to digital converter is busy converting.
6
RESERVED
Reserved for future use.
5
RESERVED
Reserved for future use.
4
RHIGH
A one indicates that the processor core thermal diode high temperature alarm
has activated.
3
RLOW
A one indicates that the processor core thermal diode low temperature alarm
has activated.
2
OPEN
A one indicates an open fault in the connection to the processor core diode.
1
RESERVED
Reserved for future use.
0 (LSB)
RESERVED
Reserved for future use.
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