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What are the connectivity options offered by FunkyOtherHalf's BreadboardTOH? [answered]

asked 2014-11-10 11:53:00 +0200

egasimus gravatar image

updated 2014-11-10 11:53:40 +0200

The BreadboardTOH page in the FOH store describes the available connections as:

access to all I2C, INT, 3V3, 5Vin of the phone

_I2C_ is (obviously) the I2C bus. _3V3_ is a 3.3V power line. _5Vin_ is the 5V battery/charger power input. What is the _INT_ thing, though? What about the four _SCL/SDA 1V8/3V3_ pins which aren't listed here but are clearly visible on the picture?

I'm asking because I'd be interested in hacking together an audio TOH module featuring high quality AD/DA conversion, but if there is no high-throughput connectivity option available (capable of streaming at least 4 in/4 out audio at 16-bit/44100Hz), then this would obviously not be possible.

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The question has been closed for the following reason "the question is answered, an answer was accepted" by eric
close date 2014-11-11 10:20:16.457438

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I think it would be better to ask this directly to the developer on talk.maemo.org than here, as this is not really meant as a site to discuss third party products.

nthn ( 2014-11-10 12:03:27 +0200 )edit

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answered 2014-11-10 12:10:29 +0200

simosagi gravatar image

updated 2014-11-10 12:10:52 +0200

The SDA+SCL lines are the I2C pins.
Also, if you are going to develop some TOH, you should download the Jolla OH developer kit, from http://jolla.com/the-other-half-developer-kit.
The contained document explains what is the INT signal.

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Thanks. So that's just an interrupt then, and the I2C bus is the only actual data line for TOHs, which certainly isn't good enough for realtime media streaming. Fair enough, though I liked the form factor. Hopefully once the TOH market takes off subsequent Jolla models would include a faster interface available as breakout pins.

egasimus ( 2014-11-10 14:59:52 +0200 )edit

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Asked: 2014-11-10 11:53:00 +0200

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Last updated: Nov 10 '14