Hex
Address
35h
36h
37h
Description
VCCP2 High Limit
VCCP2 Low Limit
Ext. Temp1 High Limit
38h
Ext. Temp1 Low Limit
39h
Internal Temp. High Limit
3Ah
Internal Temp. Low Limit
3Bh
AIN1/FAN1 High Limit
3Ch
AIN2/FAN2 High Limit
3Dh
Reserved
3Eh
Company ID Number
3Fh
Revision Number
40h
Configuration Register 1
41h
Interrupt INT Status Register 1
42h
Interrupt INT Status Register 2
43h
INT Mask Register 1
44h
INT Mask Register 2
46h
Chassis Intrusion Clear Register
47h
VID0–3/Fan Divisor Register
49h
VID4 Register
4Ah
Configuration Register 2
4Ch
Interrupt Status Register
Mirror No. 1
4Dh
Interrupt Status Register
Mirror No. 2
ADM1024
Table VII (continued)
Power-On Value
(Binary Bit 7–0) Notes
Indeterminate
Indeterminate
Indeterminate
Stores high limit for a diode sensor connected to Pins 13
and 14.
Indeterminate
Stores low limit for a diode sensor connected to Pins 13
and 14.
Indeterminate
Stores the high limit for the internal temperature reading.
Indeterminate
Stores the low limit for the internal temperature reading.
Indeterminate
Stores high limit for AIN1 or FAN1, depending on the
configuration of Pin 5.
Indeterminate
Stores high limit for AIN2 or FAN2, depending on the
configuration of Pin 6.
Indeterminate
0100 0001
This location will contain the company identification
number (Read Only).
0001 nnnn
Last four bits of this location will contain the revision
number of the part (Read Only).
0000 1000
See Table IX
0000 0000
See Table X
0000 0000
See Table XI
0000 0000
See Table XII
0000 0000
See Table XIII
0000 0000
See Table XIV
0101 (VID3–VID0) See Table XV
1000 000 (VID4) See Table XVI
0000 0000
See Table XVII
0000 0000
See Table XVIII
0000 0000
See Table XIX
Table VIII. Register 16h, Channel Mode Register (Power-On Default = 00h)
Bit Name
R/W
0 FAN1/AIN1
R/W
1 FAN2/AIN2
R/W
2 2.5 V, VCCP2/D2 R/W
3 Int. VCC
R/W
4 IRQ0 EN
R/W
5 IRQ1 EN
R/W
6 IRQ2 EN
R/W
7 VID/IRQ
R/W
Description
Clearing this bit to 0 configures Pin 5 as FAN1 input. Setting this bit to 1 configures Pin 5 as AIN1.
Power-on default = 0.
Clearing this bit to 0 configures Pin 6 as FAN2 input. Setting this bit to 1 configures Pin 6 as AIN2.
Power-on default = 0.
Clearing this bit to 0 configures Pins 17 and 18 to measure VCCP2 and 2.5 V. Setting this bit to 1
configures Pins 17 and 18 as an input for a second remote temperature-sensing diode. Power-on
default = 0.
Clearing this bit to 0 sets the measurement range for the internal VCC measurement to 3.3 V. Setting
this bit to 1 sets the internal VCC measurement range to 5 V. Power-on default = 0.
Setting this bit to 1 enables Pin 24 as an active high interrupt input, provided Pins 20 to 24 have
been configured as interrupts by setting Bit 7 of the Channel Mode Register. Power-on default = 0.
Setting this bit to 1 enables Pin 23 as an active high interrupt input, provided Pins 20 to 24 have
been configured as interrupts by setting Bit 7 of the Channel Mode Register. Power-on default = 0.
Setting this bit to 1 enables Pin 22 as an active high interrupt input, provided Pins 20 to 24 have
been configured as interrupts by setting Bit 7 of the Channel Mode Register. Power-on default = 0.
Clearing this bit to 0 configures Pins 20 to 24 as processor voltage ID inputs. Setting this bit to 1
configures Pins 20 to 24 as interrupt inputs. Power-on default = 0.
REV. B
–25–