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Altera_Forum
Honored Contributor I
912 Views

MAX 10 Modular ADC TSD

Hey, 

 

I followed instruction from the example project on this page: https://cloud.altera.com/devstore/platform/16.0.0/nios-ii-on-die-temperature-sensor-design-example/ 

trying to read on-die temperature. 

 

Whatever settings I try to change (including the original) I keeps reading only slot# 1 out of the 64 of the example, all the others are zeros. 

Even that first one gives me irrational -15/16/17 Celsius degrees (code 3754/6/9). 

 

I'm using model 10M50DAF256I7G. 

 

I found vary little on this on the web. 

 

EDIT 1: 

So the example project does work on the development kit (gives reasonable temperature), with model 10M50DAF484C6GES. 

The question remains why model 10M50DAF256I7G returns unreasonable temperature. 

 

EDIT 2: 

I tried with another board with 10M50DAF256I7G and it returns even weirder values at around 3800's code.  

 

EDIT 3: 

With the ADC toolkit I can see changes that makes sense, for example when I try to change the temperature by touching it, and it happens in both models, and with all three boards. 

So I suspect different models return different codes, although it I can't find any references about it and it certainly doesn't say it in the MAX 10 ADC datasheet. Anyone here have a stand about it? 

 

Thanks, 

Eyar
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Altera_Forum
Honored Contributor I
76 Views

Hi Eyar, 

I expirience the same behaviour although on different models. Gives reasonable readings on 10M50DAF484C6GES (development kit), but offset on 10M04,10M08 based boards same Qsys design.
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