參數(shù)資料
型號(hào): AMD1027
廠商: Analog Devices, Inc.
英文描述: dBCOOL Remote Thermal Controller and Voltage Monitor
中文描述: dBCOOL遠(yuǎn)程熱控制器和電壓監(jiān)視器
文件頁數(shù): 17/56頁
文件大?。?/td> 1072K
代理商: AMD1027
REV. A
ADM1027
–17–
SMBALERT
, STATUS, AND MASK REGISTERS
SMBALERT
CONFIGURATION
Pin 10 of the ADM1027 can be configured as either PWM2 or
as an
SMBALERT
output. The
SMBALERT
output may be
used to signal out-of-limit conditions as explained below. The
default state of Pin 10 is PWM2. To configure Pin 10 as
SMBALERT
:
Configuration Reg. 3 (Addr = 0x78), Bit 0 = 1 =
SMBALERT
Configuration Reg. 3 (Addr = 0x78), Bit 0 = 0 = PWM2 =
default
LIMIT VALUES
Associated with each measurement channel on the ADM1027
are high and low limits. These can form the basis of system
status monitoring; a status bit can be set for any out-of-limit
condition and detected by polling the device. Alternatively,
SMBALERT
interrupts can be generated to flag a processor or
microcontroller of out-of-limit conditions.
8-BIT LIMITS
The following is a list of 8-bit limits on the ADM1027:
Voltage Limit Registers
Reg. 0x44
2.5 V Low Limit
= 0x00 default
Reg. 0x45
2.5 V High Limit
= 0xFF default
Reg. 0x46
V
CCP
Low Limit
= 0x00 default
Reg. 0x47
V
CCP
High Limit
= 0xFF default
Reg. 0x48
V
CC
Low Limit
= 0x00 default
Reg. 0x49
V
CC
High Limit
= 0xFF default
Reg. 0x4A
5 V Low Limit
= 0x00 default
Reg. 0x4B
5 V High Limit
= 0xFF default
Reg. 0x4C
12 V Low Limit
= 0x00 default
Reg. 0x4D
12 V High Limit
= 0xFF default
Temperature Limit Registers
Reg. 0x4E
Remote 1 Temp Low Limit
= 0x81 default
Reg. 0x4F
Remote 1 Temp High Limit
= 0x7F default
Reg. 0x6A
Remote 1 THERM Limit
= 0x64 default
Reg. 0x50
Local Temp Low Limit
= 0x81 default
Reg. 0x51
Local Temp High Limit
= 0x7F default
Reg. 0x6B
Local THERM Limit
= 0x64 default
Reg. 0x52
Remote 2 Temp Low Limit
= 0x81 default
Reg. 0x53
Remote 2 Temp High Limit
= 0x7F default
Reg. 0x6C
Remote 2 THERM Limit
= 0x64 default
16-Bit Limits
The fan TACH measurements are 16-bit results. The fan TACH
limits are also 16 bits, consisting of a high byte and low byte.
Since fans running underspeed or stalled are normally the only
conditions of interest, only high limits exist for fan TACHs.
Since fan TACH period is actually being measured, exceeding
the limit indicates a slow or stalled fan.
Fan Limit Registers
Reg. 0x54
TACH1 Minimum Low Byte
= 0xFF default
Reg. 0x55
TACH1 Minimum High Byte
= 0xFF default
Reg. 0x56
TACH2 Minimum Low Byte
= 0xFF default
Reg. 0x57
TACH2 Minimum High Byte
= 0xFF default
Reg. 0x58
TACH3 Minimum Low Byte
= 0xFF default
Reg. 0x59
TACH3 Minimum High Byte
= 0xFF default
Reg. 0x5A
TACH4 Minimum Low Byte
= 0xFF default
Reg. 0x5B
TACH4 Minimum High Byte
= 0xFF default
OUT-OF-LIMIT COMPARISONS
The ADM1027 will measure all parameters in round-robin format
and set the appropriate status bit for out-of-limit conditions.
Comparisons are done differently depending on whether the
measured value is being compared to a high or low limit.
HIGH LIMIT: > COMPARISON PERFORMED
LOW LIMIT: < OR = COMPARISON PERFORMED
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