Salve! Robert Michel schrieb am Dienstag, den 12. Dezember 2006 um 18:51h:
> Salve Koen! > > On Tue, 12 Dec 2006, Koen Kooi wrote: > > > PS: Again, it seems that an FPGA between the I/O connectors > > > and the other chips would encrease the power of the Neo1973, > > > e.g. the FPGA could switch the second audio jack to mono output. > > > > As can a GPIO. Stop with the fpga nonsense and get a devboard to play with > Just conventional design of a smartphone would wast much of the I/O > power of the SoC (eg. SPI) of the audio ic and of the I/O connector > of the device. > > The WM8753 has 2 ADC and 2 DAC +1VoiceDAC and the possiblity to switch > 2 line in and 2 mic in, and has multiple out but no chance to route an > DAC to an ADC line. > > And the SoC has several interesting I/Os, but the Neo1973 will have > only a mini-USB and one stereo 2,5mm audio jack (or I hope a second > 2,5mm audio jack). > > With out ground line makes this 3+2(+2) = 5 (7) lines > with gound connector 4+3(+3) = 7 (10) I/O contacts. > > Will a GPIO help to totaly free to switch SPI USB audio in/out to > any to this lines? Could you give me a link for GPIO knowledge? The WM8753 hasen't GPIO support, but the WM9714 would http://www.wolfsonmicro.com/products/WM9714/ about: http://www.wolfsonmicro.com/uploads/documents/en/WAN_0182.pdf But I don't see how GPIO could switch an audio-in jack to be a second audio-out jack (third audio-out channel) so that the Neo1973 would have 1 stereo line out and one mono headphone out. I thing it is cool that the WM8753 has 3 channel DAC audio out and it would worth it to make all 3 usable simultanious ;) > So could you stay constructive and explain how "GPIO" coudl help to use > the full power given with the WM8753 and S3C2410 and the external > connectors of the Neo1973? GPIO would not help to make SPI usable externaly, right? rob PS: Wolfson DAC are used for the ipod: http://ipodlinux.sourceforge.net/techdetails.shtml _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
