Adding sound to IBX101

[Mark Leman]

I have seen the threads about using an arc sound add-on board but I would
like to add the components to the IBX 101 motherboard.

There is a footprint of an 14pin surface mount IC marked IC1 (DAC?) on my
board which then connects to two 8pin surface mount ICs (op-amps?) and then
out through some large electrolytic (C6 & C13)caps to the plug PL1. This
looks like the audio section, I'll beep the connections back to the
Processor IC tonight to check :-)

On the PS7500 dev board the audio DAC is a CS4333, but this is 8pin so its
not one of these. The Philips TDA1545A mentioned elsewhere does not appear
to match the pin out of the track work on the IBX101 main board.

Does any one have any clue what these parts were - I can solder them down no
problem (we have a surface mount production line here) but only if I can
work out what to add :-)

Regards, Mark Leman.

Then its off to work out what U23 on my other unit (an IBX200) is, also
looks like audio section but is 16 pin surface mount IC.