ADT7484A/ADT7486A

Rev. 0 | Page 10 of 16

Command Summary

Table 7 summarizes the commands supported by the ADT7484A/ADT7486A devices when directed at the target address selected by the

fixed address pins. It contains the command name, command code (CC), write data length (WL), read data length (RL), and a brief

description.

Table 7. Command Code Summary

Command

Command Code, CC

Write Length, WL

Read Length, RL

Description

Ping()

0x00

0x00

0x00

Shows a nonzero FCS over the header if present.

GetIntTemp()

0x00

0x01

0x02

Shows the temperature of the device’s internal

thermal diode.

GetExt1Temp()

0x01

0x01

0x02

Shows the temperature of External Thermal Diode 1.

GetExt2Temp()

0x02

0x01

0x02

Shows the temperature of External Thermal Diode 2

(ADT7486A only).

GetAllTemps()

0x00

0x01

0x04 (ADT7484A)

0x06 (ADT7486A)

Shows a 4- or 6-byte block of data (ADT7484A:

GetIntTemp, GetExt1Temp; ADT7486A: GetIntTemp,

GetExt1Temp, GetExt2Temp).

SetExt1Offset()

0xe0

0x03

0x00

Sets the offset used to correct errors in External Diode 1.

GetExt1Offset()

0xe0

0x01

0x02

Shows the offset that the device is using to correct

errors in External Diode 1.

SetExt2Offset()

0xe1

0x03

0x00

Sets the offset used to correct errors in External Diode 2

(ADT7486A only).

GetExt2Offset()

0xe1

0x01

0x02

Shows the offset that the device is using to correct

errors in External Diode 2 (ADT7486A only).

ResetDevice()

0xf6

0x01

0x00

Functional reset. The ADT7484A/ADT7486A also

respond to this command when directed to the

Target Address 0x00.

GetDIB()

0xf7

0xf7

0x01

0x01

0x08

0x10

Shows information used by SW to identify the device’s

capabilities. Can be in 8- or 16-byte format.