Rank: Member
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Joined: 1/4/2011(UTC)
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Location: Melbourne, Australia
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Hey guys,
I'm contemplating a build using an Opus with a MUX in front of it acting as both an input selector and SPDIF to I2S converter. I'm thinking of using an Arduino to control the Opus and to also control a CD-ROM as one of the SPDIF inputs.
Is there any way I can control the MUX as well?
I notice that the CS8416 can be controlled via I2C or SPI. Are these pins brought out on the board anywhere or would I need to do some modification in order to connect it up?
Is it possible to put it on a common bus with an Opus? How would the address be determined?
Thanks. =)
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Rank: Member
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Joined: 11/9/2007(UTC)
Posts: 453
Location: usa
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By convention (or luck) each chip has a separate ID or even jumpers to enable a few different IDs (look at the datasheet) so they can all reside on a single I2C bus. I haven't looked at the MUX in detail, but I believe all current TPA boards allow s/w mode.
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Rank: Administration
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Joined: 10/24/2006(UTC)
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You can simply use the four-pin control header we provide to control it (only need two of the pins) with a pair of GPIOs. Take a look at the manual to see the control combinations.
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Rank: Member
Groups: Member
Joined: 12/24/2008(UTC)
Posts: 100
Location: Seattle, WA
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Yep, just controlling the 2 pins on the mux via the Arduino directly is what I am doing.
Cheers
Thomas
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