The pin layout looks identical to yours with the 'key' up in that corner. Whether or not it matches up is another story. Really all I am after is at least one spdif input via coaxial especially if I can get a bit-perfect recording or live decode to the analog 5.1 outs (which, unless I am mistaken, ac3filter is now capable of doing to some effect from a live input?)
IS this something wrong with my instal or is this intended?
Well I guess I'll just have to take a day and start poking around on that solder pad and see what sticks. As it is, the linked pinout on the supported devices page looks somewhat promising. pin 1 on this card looks like it should trace back through a capacitor to the 12V pci pin and the SPDIF1 and SPDIF2 pins on the pad look like they 'may' trace near the relevant pins in the 8738 chip. Not 100% though. Again, would probably have to take time out to poke around some.
Doujinshi, I've released a new version. This is going to be the last version for quite a while because I won't have access to a full-fledged PC for a few months or so.
Have now confirmed that as well as digital out (as in my earlier post) digital in can be connected up on a Sweex SC012 via pin 86 of the 8738 chip. It's necessary to bring the +/- 0.5V SPDIF levels up to TTL (0/5V) using a 74HC04 inverter (I used the circuit from towards the bottom of this page). Assignments for the 5x2 connector are as shown in my picture a few posts back.
Well, the specification says 0.5V to 1V. In practice you find that an unconnected S/PDIF coax output (eg on a stand-alone DVD player or CD player) has a signal that swings 0.5V either side of 0V, so is 1V peak-to-peak (or +/- 0.5V).When the player is connected up to equipment that terminates the output with 75 ohms the signal level drops to around 0.5V peak-to-peak (+/- 0.25V).
But if your stereo is expecting 0.5V, why are you stepping it up to 5V? Won't it kill your stereo?
Do you think there would be any problem using 2 8738/8768 cards in 1 machine with your drivers?
Quote from: marscay on 03 August, 2009, 04:18:36 PMDo you think there would be any problem using 2 8738/8768 cards in 1 machine with your drivers?That's an excellent question. From the specs, it should work just fine, but I tried this once without success - the second driver instance didn't load no matter what. I tested this configuration with just the official driver and with both my and the official driver simultaneously. Perhaps it was my system setup that was flawed (it was on a mainboard with a VIA chipset after all) or I did some other things wrong, but that's just speculation.