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| 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)： | 48/97頁 |
| 文件大小： | 978K |
| 代理商： | PENTIUM II XEON PROCESSOR |
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PENTIUM II XEON PROCESSOR AT 400 AND 450 MHZ
E
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12/15/98 5:14 PM 24377002.doc
Table 31. ARA SMBus Packet
S
ARA
Read
Ack
Address
///
P
1
0001 100
1
1
Device Address
1
1
1
NOTE:
1.
This is an 8-bit field. The device which sent the alert will respond to the ARA Packet with its address in the seven most
significant bits. The least significant bit is undefined and may return as a ‘1’ or ‘0’. See Section 4.3.7. for details on the
Thermal Sensor Device addressing.
Table 32. Command Byte Bit Assignments
Register
Command
Reset State
Function
RESERVED
00h
N/A
Reserved for future use
RRT
01h
N/A
Read processor core thermal data
RS
02h
N/A
Read status byte (flags, busy signal)
RC
03h
0000 0000
Read configuration byte
RCR
04h
0000 0010
Read conversion rate byte
RESERVED
05h
0111 1111
Reserved for future use
RESERVED
06h
1100 1001
Reserved for future use
RRHL
07h
0111 1111
Read processor core thermal diode T
HIGH
limit
RRLL
08h
1100 1001
Read processor core thermal diode T
LOW
limit
WC
09h
N/A
Write configuration byte
WCR
0Ah
N/A
Write conversion rate byte
RESERVED
0Bh
N/A
Reserved for future use
RESERVED
0Ch
N/A
Reserved for future use
WRHL
0Dh
N/A
Write processor core thermal diode T
HIGH
limit
WRLL
0Eh
N/A
Write processor core thermal diode T
LOW
limit
OSHT
0Fh
N/A
One shot command (use send byte packet)
RESERVED
10h - FFh
N/A
Reserved for future use
All of the commands are for reading or writing
registers in the thermal sensor except the one-shot
command (OSHT). The one-shot command forces
the immediate start of a new conversion cycle. If a
conversion is in progress when the one-shot
command is received, then the command is ignored.
If the thermal sensor is in standby mode when the
one-shot command is received, a conversion is
performed and the sensor returns to standby mode.
The one-shot command is not supported when the
thermal sensor is in auto-convert mode.
The default command after reset is to reserved value
(00h). After reset, receive byte packets will return
invalid data until another command is sent to the
thermal sensor.
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