ADM1026JST ON Semiconductor, ADM1026JST Datasheet - Page 34

• Manufacturer Part Number: ADM1026JST
• Description: IC CNTRL SYS REF/EEPROM 48LQFP
• Manufacturer: ON Semiconductor

Specifications of ADM1026JST

• Rohs Status: RoHS non-compliant
• Function: Hardware Monitor
• Topology: ADC, Comparator, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: 0°C ~ 100°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 48-LFQFP

Registers
Table 8. Address Pointer Register
Table 9. List of Registers
Address
7–0
Bit
Hex
0A
0B
0C
0D
0E
1A
1B
1C
1D
1E
00
01
02
03
04
05
06
07
08
09
0F
10
12
13
14
15
16
17
18
19
1F
20
21
22
23
11
Configuration 1
Configuration 2
Fan 0–3 Divisor
Fan 4–7 Divisor
DAC Control
PWM Control
EEPROM Register
Configuration Register
GPIO Config 1
GPIO Config 2
GPIO Config 3
GPIO Config 4
EEPROM Register 2
Int Temp THERM Limit
TDM1 THERM Limit
TDM2 THERM Limit
Int Temp T
TDM1 T
TDM2 T
EEPROM Register 3
Test Register 1
Test Register 2
Manufacturer’s ID
Revision
Mask Register 1
Mask Register 2
Mask Register 3
Mask Register 4
Mask Register 5
Mask Register 6
Int Temp Offset
Int Temp Value
Status Register 1
Status Register 2
Status Register 3
Status Register 4
Address Pointer
Name
MIN
MIN
Name
MIN
R/W
Power−On
37h (55°C)
50h (80°C)
50h (80°C)
28h (40°C)
40h (64°C)
40h (64°C)
W
Value
100h
300h
FFh
FFh
00h
00h
55h
55h
00h
00h
00h
00h
00h
00h
00h
00h
41h
4xh
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
Address of ADM1026 registers. See the following tables for details.
Configures various operating parameters .
Configures Pins 3–6 and 9–12 as fan inputs or GPIO.
Sets oscillator frequency for Fan 0–3 speed measurement.
Sets oscillator frequency for Fan 4–7 speed measurement.
Contains value for fan speed DAC (analog fan speed control) or minimum value
for automatic fan speed control.
Contains value for PWM fan speed control or minimum value for automatic fan
speed control.
For factory use only.
Configuration register for THERM, V
Configures GPIO0 to GPIO3 as input or output and as active high or active low.
Configures GPIO4 to GPIO7 as input or output and as active high or active low.
Configures GPIO8 to GPIO11 as input or output and as active high or active low.
Configures GPIO12 to GPIO15 as input or output and as active high or active low.
For factory use only.
High limit for THERM interrupt output based on internal temperature
measurement.
High limit for THERM interrupt output based on Remote Channel 1 (D1)
temperature measurement.
High limit for THERM interrupt output based on Remote Channel 2 (D2)
temperature measurement.
T
measurement.
T
temperature measurement.
T
temperature measurement.
Configures EEPROM for read/write/erase, etc.
Manufacturer’s test register.
For manufacturer’s use only.
Contains manufacturer’s ID code.
Contains code for major and minor revisions.
Interrupt mask register for temperature and supply voltage faults.
Interrupt mask register for analog input faults.
Interrupt mask register for fan faults.
Interrupt mask register for local temp, V
Interrupt mask register for GPIO0 to GPIO7.
Interrupt mask register for GPIO8 to GPIO15.
Offset register for internal temperature measurement.
Measured temperature from on–chip sensor.
Interrupt status register for external temp and supply voltage faults.
Interrupt status register for analog input faults.
Interrupt status register for fan faults.
Interrupt status register for local temp, V
http://onsemi.com
MIN
MIN
MIN
value for automatic fan speed control based on internal temperature
value for automatic fan speed control based on Remote Channel 1 (D1)
value for automatic fan speed control based on Remote Channel 2 (D2)
34
Description
Description
REF
BAT
BAT
and GPIO16.
, A
, A
IN8
IN8
, THERM, AFC, CI and GPIO16.
, THERM, AFC, CI, and GPIO16.