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mr-mac 27th June 2008 04:17 PM

add digital out to PDA with WM9705

I have a pda (well more like a mini laptop - clamshell with keyboard and 5" TFT screen).

Been wanting to add a SPDIF digital out to it so started investigating if it might be possible, what chip it had installed etc.

The datasheet at confirms that there is an SPDIF out on the chip.

Pin 48 is marked as SPDIF but I am not sure where I would attach the ground. Also just noticed pin 44 is SPDIF hardware enable PIN and I2s out (what would I need to provide to this pin to enable the SPDIF out?)

Also if I wanted a digital out can I just take the signal straight from the chip to a socket for the digital-out? or would I need to feed it through some components to make it suitable to be attached to a DAC?

Any advice and info greatly appreciated.


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