Hi Takashi, Sorry for distracting you from the constant struggle with HDA. I would like to provide complete support for the ESI Juli@ card. Informing the ADC (AK5385) about current sample rate via the dedicated GPIOs is fairly simple, as well as the monitoring features (DIGOUT, DIGIN, ANAIN, MUTE + volume control of the remaining DACs). However, I do not understand functions of the GPIO_FREQ_XXKHZ and GPIO_MULTI_XX GPIOs. The card's user manual says the card can detect incoming SPDIF rate. AK4114 can either read the rate from the input data in professional format only, or detect it by comparing external clock with the input rate. The AK4114 external clock pin does go to the Xilinx CPLD. The GPIOs lead to the CPLD too. Do they in some way control the CPLD to provide AK4114 with external clock so that AK4114 can provide correct input rate data through its registers? But if so, where would CPLD get the independent clock when ICE1724 is in slave mode, clocked by AK4114? True, the PMCLK output is fed to the CPLD, but that would be slaved to AK4114 too. I guess the only independent clock during the slave mode would have to come directly from the 24.576MHz crystal of ICE, but I could not trace any connection to the CPLD. Perhaps the mysterious AV73-1 helps, I could not google-out any information on this IC. The automated detection of incoming rate is important for setting correct sample rates in codecs when running on external clock. If resolved, I would add similar functionality to the MI/ODI/O card for Prodigy192 too. I am sorry for bothering you, but the GPIOs named constants in juli.c suggest you had access to some documentation about the card. My tracing and beeping the card ends with the internal CPLD logic. Thanks a lot for any information or suggestion. Best regards, Pavel Hofman. ----------------- inSITE, s.r.o. Rubesova 29, 326 00 Plzen, Czech Republic Tel., fax: +420 - 37 - 74 493 58 GSM: +420 - 603 - 163 973 Email: pavel.hofman@xxxxxxxxx _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
