M1025-1026 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
M1025-1026 Datasheet PDF : 16 Pages
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ADM1025/ADM1025A
Table VII. Register 40H – Configuration Register
Bit Name
R/W
Description
0 START
Read/Write Logic 1 enables start-up of
monitor ASIC, Logic 0 places
the ASIC in standby mode. At
start-up, limit checking func-
tions and scanning begins. Note,
all HIGH and LOW LIMITS
should be set into the ADM1025/
ADM1025A prior to turning on
this bit. (Power-up Default = 0)
1 Reserved Read
2 Reserved Read
3 Reserved Read
4 RESET
Read/Write Setting this bit generates a
minimum 20 ms low pulse on
Pin 16, if the function is
enabled.
5 +12/VID4 Read/Write Selects whether Pin 11 acts
Select
as a 12 V Analog Input monitor-
ing pin, or as a VID[4] input.
This pin defaults to the 12 V
Analog Input. (Default = 0)
6 Reserved Read
7 Initialization Read/Write Logic 1 restores power-up
default values to the Configu-
ration Register and Status
Registers. This bit automati-
cally clears itself and the power-
on default is zero.
Table VIII. Register 41H – STATUS Register 1 (Power-On
Default <7:0> = 00h)
Bit Name
R/W
0 +2.5 V_Error Read Only
1 VCCP_Error Read Only
2 +3.3 V_Error Read Only
3 +5 V_Error Read Only
4 Local Temp Read Only
Error
5 Remote Temp Read Only
Error
6 Reserved
7 Reserved
Description
A one indicates a High
or Low limit has been
exceeded.
A one indicates a High
or Low limit has been
exceeded.
A one indicates a High
or Low limit has been
exceeded.
A one indicates a High
or Low limit has been
exceeded.
A one indicates that a
High or a Low Tem-
perature limit has been
exceeded.
A one indicates a High
or Low Remote Tem-
perature Limit has been
exceeded.
Table IX. Register 42H – Status Register 2 (Power-On Default
<7:0> = 00h)
Bit Name
R/W
Description
0 +12 V_Error Read Only
1 VCC_Error
Read Only
2 Reserved
Read Only
3 Reserved
Read Only
4 Reserved
Read Only
5 Reserved
Read Only
6 Remote Diode Read Only
Fault
7 Reserved
Read Only
A one indicates a High
or Low limit has been
exceeded.
A one indicates a High
or Low limit has been
exceeded.
Undefined
Undefined
Undefined
Undefined
A one indicates either a
short or open circuited
fault on the remote ther-
mal diode inputs.
Undefined
Table X. Register 47h – VID REGISTER (Power-On Default
= 0000 (VID[3:0]))
Bit Name
R/W
Description
0–3 VID[3:0]
Read Only
The VID[3:0] inputs from
Pentium/PRO power supplies
to indicate the operating
voltage (e.g., 1.3 V to 2.9 V).
4–5 Reserved
Read Only Undefined
6 Offset Config Read/Write Configures offset register to
be used with internal or
external channel. If Bit 0 of
Test Register = 1, and Bit 7
of VID Register = 0, then
setting this bit to 1 config-
ures the Offset Register to the
internal temperature chan-
nel. Clearing this bit config-
ures the Offset Register to the
external temperature chan-
nel. (Default = 0)
7 RST ENABLE Read/Write When set to 1, enables the
RST output function on Pin
16. This bit defaults to 0 on
power-up. (RST Disabled.)
Table XI. Register 49h – VID4 Register (Power-On Default =
1000 000(VID4))
Bit
Name
0
VID4
R/W
Read
1–7
Reserved
Read
Description
VID4 Input (If Selected)
(Defaults to 0)
–14–
REV. A
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