MickMad
Well-known member
Is the discussion here also about the audio libraries? For playing files out of SD card to I2S (and taking the master clock externally) there is no need for a separate board.
There IS need for an external board to do such things, as you obviously need, to say the least:
1)An SD card slot to be attached to the Teensy;
2)An I2S-compatible chip, such as the WM8731 codec from Wolson that will probably be on the board Paul is working on.
2bis)Theorically, the master clock for the Teensy and for an I2S device could be taken from a dedicated chip.
Needless to say that both of this come in SMD-only packages, and an I2S chip in particular may necessitate some passive external components. Unless you want to solder jumper wires from those tiny SMD pads to a breadboard, which is fine if you have the ability and the patiency to do such work, an external board is the only way to go.