IC-GD datasheet(36/55 Pages) ICHAUS

36 / 55 page

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iC-GD

UNIVERSAL I/O INTERFACE

Rev A1, Page 36/55

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RES

CNTlh5:By

CNTl,h:h6y

REFlh5:By

REFl,h:h6y

Counter

Reserved

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Description

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Operation

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Data

Output

PWM w/o activation pulse

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REFlh5:By

REFl,h:h6y

Counter

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Description

Power7on

UserPinit

Operation

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CNTlh5:By

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Data

Output

PWM with activation pulse

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Figure 6: Register interpretation and PWM modes

MIXED OPERATION

Provided that functions do not overlap, two operating

modes can be used on one channel simultaneously.

The pins IA1 and IA2 are available as digital input or

output pins or current outputs if only the analog voltage

inputs, the voltage outputs or the current input function

at the particular channel is used. 4-wire PT temperature

sensors require a current output IAx and a differential

voltage input. A voltage output in conjunction with a

2- or 3-wire PT temperature sensor on one channel is

not possible. The counter (only available as the pri-

mary function) complies with the digital input, the PWM

complies with a digital output.

The primary function enables a fast data transfer via

SPI command. The secondary function is only able to

transfer data via register access and therefore is slower.

The following table shows all possible operating modes.

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