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參數(shù)資料
| 型號： | ADM1028ARQZ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | MO-137AB, QSOP-16 |
| 文件頁數(shù)： | 6/16頁 |
| 文件大小： | 379K |
| 代理商： | ADM1028ARQZ-REEL7 |
REV. B
ADM1028
–14–
Table V. Register 0x40 Configuration Register Power-On Default <7:0> = 21h
Bit
Name
R/
W
Description
0START
Read/Write
Setting this bit to a “1” enables startup of ADM1028; clearing this bit to “0”
places ADM1028 in standby mode. At startup, temperature monitoring and
limit checking functions begin. Note, all limit values should be programmed
into ADM1028 prior to using the standard thermal interrupt mechanism
based upon high and low limits. (Power-Up Default = 1.)
1
INT Enable
Read/Write
Setting this bit to a “1” enables the
INT output. 1 = Enabled 0 = Disabled
(Power-Up Default = 0.)
2Reserved
Read Only
Reserved (Default = 0).
3
Programmable
Read/Write Once
Setting this bit to a “1” will lock in the value set into the Programmable Remote
Therm Limit
Therm Limit Register (Value Register 0x14). Furthermore, if this bit is set,
Lock Bit
the values in the Default Remote Therm Limit Register Bit (Value Register
0x18) will no longer have an effect on the
THERM, FAN_SPD, or FAN_OFF
outputs. This bit cannot be written again until after RST has been asserted.
(Power-Up Default = 0.)
4
Soft Reset
Read/Write
Setting this bit to a “1” will restore power-up default values to the Configu-
ration Register, Interrupt Status Register and Interrupt Mask Register. This
also rearms
INT structure but not the THERM structure. This bit automati-
cally clears itself since the power-on default is zero.
5
FAN_OFF
Read/Write
Setting this bit to a “1” will cause the
FAN_OFF pin to be floated. Clearing
this bit to “0” will cause the
FAN_OFF pin to be driven low which requests
that the fan be turned off. This bit will be unconditionally set if the
THERM
pin is ever asserted; once
THERM is negated this bit must be returned to its
prior state (prior to
THERM assertion). Reading this bit reflects the state of
the
FAN_OFF output buffer. Due to the open-drain nature of this pin the
value read does not represent the actual state of the external circuit con-
nected to it. (Power-Up Default = 1.)
6
GPI Invert
Read/Write
Setting this bit to a “1” will invert the GPI input for the purpose of level
detection and interrupt generation. Clearing this bit to “0” leaves the GPI
input unmodified. (Power-Up Default = 0.)
7Reserved
Read Only
Reserved. (Power-Up Default = 0).
Table VI. Register 0x41. Interrupt Status Register. Power-On Default <7:0> = 00h
Bit
Name
Read/Write
Description
0
Int. Temp Error
Read/Write
A one indicates that one of the limits for the internal temperature sensor
“1” to clear
has been exceeded.
1Flag 1
Read/Write
This bit can be used as a general purpose flag with the capability of generat-
ing an interrupt. Writing a “1” to this bit causes it to be set to “1.” Writing a
“0” clears this bit.
2Flag 2
Read/Write
This bit can be used as a general purpose flag with the capability of generat-
ing an interrupt. Writing a “1” to this bit causes it to be set to “1.” Writing a
“0” clears this bit.
3
Int.
THERM
Read/Write
A one indicates that the internal thermal overload (
THERM) limit has
“1” to clear
been exceeded.
4
GPI Input
Read Only
A “1” indicates that the GPI pin is asserted. The polarity of the GPI pin is
determined by GPI Invert (Bit 6) in the Configuration Register. For ex-
ample, if GPI Invert is cleared then this bit will be “1” when the GPI pin is
high (“1”); this bit will be “0” when the GPI pin is low (“0”.) If GPI Invert
is set then this bit will be “1” when the GPI pin is low (“0”); this bit will be
“0” when the GPI pin is high (“1”). Note that the state of GPI is not latched;
this bit simply reflects the state or inverted state of the GPI pin. Note: if this
bit is “1” reading this register will NOT clear it to “0.”
5Ext. Temp Error
Read/Write
A one indicates that one of the limits for the external temperature sensor
“1” to clear
has been exceeded.
6Ext.
THERM
Read/Write
A one indicates that the external thermal overload (
THERM) limit has
“1” to clear
been exceeded.
7Ext Diode Fault
Read/Write
A one indicates either a short- or open-circuit fault on the remote sensor diode.
“1” to clear
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