ADT7516 datasheet(32/44 Pages) AD

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ADT7516/ADT7517/ADT7519

Rev. B | Page 32 of 44

Control Configuration 1 Register (Read/Write)

[Address = 0x18]

This configuration register is an 8-bit read/write register that is

used to set up some of the operating modes of the ADT7516/

ADT7517/ADT7519.

Table 15. Control Configuration 1

1 Default settings at power-up.

Table 16.

Bit

Function

This bit enables/disables conversions in round robin

and single-channel mode.

ADT7516/ADT7517/ADT7519 powers up in round

robin mode but monitoring is not initiated until this bit

is set. The default = 0.

0 = stop monitoring.

1 = start monitoring.

[C1:C2]

Selects between the two different analog inputs on

Pin 7 and Pin 8. ADT7516/ADT7517/ADT7519 powers

up with AIN1 and AIN2 selected.

00 = AIN1 and AIN2 selected.

01 = undefined.

10 = external TDM selected.

11 = undefined.

Selects between digital (LDAC) and analog inputs

(AIN3) on Pin 9. When AIN3 is selected, Bit C3 of the

Control Configuration 3 register is masked and has no

effect until LDAC is selected as the input on Pin 9.

0 = LDAC selected.

1 = AIN3 selected.

Reserved. Write 0 only.

0 = enable INT/INT output.

1 = disable INT/INT output.

Configures INT/INT output polarity.

0 = active low.

1 = active high.

Power-Down Bit. Setting this bit to 1 puts the

ADT7516/ADT7517/ADT7519 into standby mode. In

this mode, both ADC and DACs are fully powered

down, but the serial interface is still operational. To

power up the part again, just write 0 to this bit.

Control Configuration 2 Register (Read/Write)

[Address = 0x19]

This configuration register is an 8-bit read/write register that is

used to set up some of the operating modes of the ADT7516/

ADT7517/ADT7519.

1 Default settings at power-up.

Table 17.

Bit

Function

[C0:C2]

In single-channel mode, these bits select between VDD,

the internal temperature sensor, external temperature

sensor/AIN1, AIN2, AIN3, and AIN4 for conversion. The

default is VDD.

000 = VDD.

001 = internal temperature sensor.

010 = external temperature sensor/AIN1.

(Bits[C1:C2] of the Control Configuration 1 register

affect this selection).

011 = AIN2.

100 = AIN3.

101 = AIN4.

110 to 111 = reserved.

Reserved.

Selects between single-channel and round robin

conversion cycle. The default is round robin.

0 = round robin.

1 = single channel.

Default condition is to average every measurement on

all channels 16 times. This bit disables this averaging.

Channels affected are temperature, analog inputs, and

VDD.

0 = enable averaging.

1 = disable averaging.

SMBus timeout on the serial clock puts a 25 ms limit

on the pulse width of the clock, ensuring that a fault

on the master SCL does not lock up the SDA line.

0 = disable SMBus timeout.

1 = enable SMBus timeout.

Software Reset. Setting this bit to 1 causes a software

reset. All registers and DAC outputs reset to their

default settings.

Control Configuration 3 Register (Read/Write)

[Address = 0x1A]

This configuration register is an 8-bit read/write register that is

used to set up some of the operating modes of the ADT7516/

ADT7517/ADT7519.

1 Default settings at power-up.

ADT7516 Datasheet(PDF) 32 Page - Analog Devices

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