ADAU145x AES/EBU
We're considering adding AES/EBU reception (only) in a new design (probably ADAU1451).
The DSP supports SPDIF natively, which is very close, but disclaims AES. Why is that? If we add a proper isolation transformer and resistor, and are mindful of signal levels, will this work reliably? If not, why not?
I'd rather not spend the extra $/board space on a dedicated AES receiver if I can avoid it.
aes/ebu
adau145x
As long as you make sure the received level (after isol transformer) never exceeds the max input of the ADAU1451 it should work.
I suggest diode clamping protection.
I suggest that you add a series Cap 0.1uf between the IC RX Pin and the Isol Transformer . And put a 100k resistor to GND directly on the CHIP RX pin as well.
Strictly speaking, the Channel Status and other subcode data is formatted differently between AES and S/PDIF, So as long as you dont card or handle this it is rarely a problem.
www.ranecommercial.com/.../Interfacing_AES3_&_SPDIF.pdf
As long as you make sure the received level (after isol transformer) never exceeds the max input of the ADAU1451 it should work.
I suggest diode clamping protection.
I suggest that you add a series Cap 0.1uf between the IC RX Pin and the Isol Transformer . And put a 100k resistor to GND directly on the CHIP RX pin as well.
Strictly speaking, the Channel Status and other subcode data is formatted differently between AES and S/PDIF, So as long as you dont card or handle this it is rarely a problem.
www.ranecommercial.com/.../Interfacing_AES3_&_SPDIF.pdf
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