參數(shù)資料
型號: LM93CIMT
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 電源管理
英文描述: Hardware Monitor with Integrated Fan Control for Server Management
中文描述: 16-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO56
封裝: MO-153EE, TSSOP-56
文件頁數(shù): 61/92頁
文件大小: 654K
代理商: LM93CIMT
16.0 Registers
(Continued)
16.7.6 Register B4–BBh
Fan Tach Limit Registers
Register
Address
Read/
Write
Register
Name
Fan Tach 1
Limit LSB
Fan Tach 1
Limit MSB
Fan Tach 2
Limit LSB
Fan Tach 2
Limit MSB
Fan Tach 3
Limit LSB
Fan Tach 3
Limit MSB
Fan Tach 4
Limit LSB
Fan Tach 4
Limit MSB
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Default
Value
B4h
R/W
TLIMIT1[5:0]
RES
FCh
B5h
R/W
TLIMIT1[13:6]
FFh
B6h
R/W
TLIMIT2[5:0]
RES
FCh
B7h
R/W
TLIMIT2[13:6]
FFh
B8h
R/W
TLIMIT3[5:0]
RES
FCh
B9h
R/W
TLIMIT1[13:6]
FFh
BAh
R/W
TLIMIT4[5:0]
RES
FCh
BBh
R/W
TLIMIT4[13:6]
FFh
If a tachometer reading exceeds its limit (as defined by these registers) the corresponding bit is set in the Host and BMC Error
Status registers. The fan tachometer readings can be associated with a particular PWM output, but the tach errors are not
automatically masked when a PWM is at 0% or set to level that causes the fan RPM to be below the limit purposely. In order to
prevent false errors, care needs to be taken to make sure that the Fan Tach Limits are properly set. Errors are never generated
for a fan if its limit is set to 3FFFh.
L
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