REV. 0

ADM1022

–16–

Table IV. Registers

Address A7–A0

Register Name

in Hex

Comments

Value Registers

0x13–0x3A

See Table V.

Company ID

0x3E

This location will contain the company identification number. This

register is read only.

Revision

0x3F

This location will contain the revision number of the part in the lower

four bits of the register [3:0]. The upper four bits reflect the ADM1022

Version Number [7:4]. The first version is 1100. The next version of

ADM1022 would be 1101, etc. For instance, if the stepping were A0

and this part is an ADM1022, this register would read 1100 0000.

This register is read only.

Configuration Register

0x40

See Table VI. Power-On Value = 0010 0101.

Interrupt Status Register

0x41

See Table VII. Power-On Value = 0000 0000.

Reserved for Future Use

0x42

Interrupt Mask Register

0x43

See Table VIII. Power-On Value = 0000 0000.

Reserved for Future Use

0x44

Reserved for Future Use

0x47

Reserved for Future Use

0x4A

Interrupt Status Register Mirror

0x4C

See Table IX. Power-On Value = 0000 0000.

Table V. Registers 0x13–0x3A Value Registers

Address

Read/Write

Description

0x13

Read/Write

Programmable Local Temp Sensor Automatic Trip Point—Default 70

°C. This register can only

be written to if the write once bit in the configuration register (0x40, Bit 3) has not been set.

0x14

Read/Write

Programmable Remote Thermal Diode Automatic Trip Point—Default 100

°C. This register

can only be written to if the write once bit in the configuration register (0x40, Bit 3) has not

been set.

0x15

Read/Write

Test Register for manufacturer’s use only. Do not write to this register.

0x17

Read Only

Default Local Temp Sensor Automatic Trip Point—Default 70

°C. Cannot be changed. Dis-

abled when Bit 3 of Configuration Register is set.

0x18

Read Only

Default Remote Thermal Diode Automatic Trip Point—Default 100

°C. Cannot be changed.

Disabled when Bit 3 of Configuration Register is set.

0x19

Read/Write

Analog Output, FAN_SPD (Defaults to 0x00h).

0x20

Read Only

External Temperature Value Diode 2.

0x26

Read Only

External Temperature Value Diode 1.

0x27

Read Only

Internal Temperature.

0x2B

Read/Write

External Temperature Diode 2 High Limit.

0x2C

Read/Write

External Temperature Diode 2 Low Limit.

0x37

Read/Write

External Temperature Diode 1 High Limit.

0x38

Read/Write

External Temperature Diode 1 Low Limit.

0x39

Read/Write

Internal Temperature High Limit.

0x3A

Read/Write

Internal Temperature Low Limit.