In revo.c I found this:
/* AK4114 support on Audiophile 192 */ /* CDTO (pin 32) -- GPIO2 pin 52 * CDTI (pin 33) -- GPIO3 pin 53 (shared with AK4358) * CCLK (pin 34) -- GPIO1 pin 51 (shared with AK4358) * CSN (pin 35) -- GPIO7 pin 59 */ #define AK4114_ADDR 0x02
I verified these mappings and can confirm that they're correct.
I found one more connection:
INT0 (pin36) -- GPIO6 pin 58
So the complete (?) list with complete pin names on the AK4114 would be:
ICE1724 -> AK4114
GPIO1 -> OCKS1/CCLK/SCL GPIO2 -> CM0/CDTO/CAD1 GPIO3 -> CM1/CDTI/SDA GPIO6 -> INT0 GPIO7 -> OCKS0/CSN/CAD0
I can not rule out that there are more connections! If you think there should be more connections I'll do some more tracing. It is a bit tedious http://www.dict.cc/englisch-deutsch/tedious.html because not all connections can be traced visually. I did that with a multimeter.
If anybody needs datasheets for the VT1724 or AK4114, I have them available.
What would be next? Right now I have no idea how to verify that in the existing code.
- Jonas
2013/1/26 Pavel Hofman pavel.hofman@ivitera.com
http://www.nix.ru/autocatalog/m_audio_midiman_sound/34397_2245_draft.jpg reveals it is AK4114, just like in ESI Juli. Its default serial data protocol is not 24bit I2S, the format expected by ICE1724.
It should be feasible to trace the GPIOs from ICE1724 to AK4114 and add the config code.
Regards,
Pavel.