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5 miscellaneous menu, 1 extended temperature range, 2 temperature alert output – Kontron KTT20-pITX User Manual

Page 10: 4 temperature high limit

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KTD-S0045-D

Page 6

U-Boot Setup


KTT20/pITX Software Guide

2.4.3 GPIO

Interface

You can choose between three modes: all interface signals are defined as GPIOs (General Purpose Input
Output) or some special signals have another function (I

2

C

TM

, SPI

TM

respectively SDIO). For a detailed

overview about these signals see the 'KTT20/pITX Users Guide' chapter 'Digital I/O Interface'. The signals
are named GPIO16 to GPIO21 respectively GPIO23 to GPIO29, GPIO32 and GPIO36 to GPIO37.
Remark: the operating systems do not support most of these special functions because the possible appli-
cations can be too different. Following the possible options

S

gpio

S

i2c-spi

S

sdio

2.5

Miscellaneous Menu

This menu part defines several special features (currently only temperature sensor features)

S

Extended temperature range

S

Temperature alert output

S

Temperature high limit

S

Temperature low limit

2.5.1

Extended Temperature Range

The default temperature range of the sensor is 0

0

C to +127

0

C. If you activate the extended range you can

measure a temperature between -55

0

C and +150

0

C. There are two options

S

disabled

S

enabled

2.5.2

Temperature Alert Output

In some cases it can be useful to disable the alert output. With this submenu is it possible to set this alarm
signal to

S

disabled

S

enabled

2.5.4 Temperature

High

Limit

The temperature high limit controls the alert output. Dependent on the extended temperature setting the
limit can be up to +150

0

C. The input format is represented by a decimal number with maximal three digits.

Example:

Temp high limit: 75

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