Dave, the CS8405A is pretty much what I am looking for. It looks like I can just branch off the four bit stream lines that are feeding into the CS4334 DAC into the CS8405A and both analog and digital interfaces will be active all the time. My only wish was that it had a lower pin count so that it would fit into a smaller 0.05 pitch part, but I can live with it. There's a lot a NC pins and a lot that I will not use in my app. Dwayne, do you typically generate the SPDIF bit stream with a uP, a DSP, or something else? --BobG -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Dave Tweed Sent: Monday, August 26, 2002 6:37 PM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [EE]: SPDIF output advice "Robert E. Griffith" wrote: > I have an audio project that currently uses a CS4334 DAC to provide L/R > analog audio outputs from a digital I2S audio stream (from a STA013 mp3 > decoder). I am trying to research SPDIF digital audio to see if I could > support it as well. I have been googling for a while, but have not found > any information on the physical line driving for SPDIF. > > Does anyone know of any good links for SPDIF digital audio? > > Does anyone know if there are line driver chips for SPDIF? Or, is it simple > enough that it is done with discrete components? If you've got I2S, the Cirrus/Crystal chips are a popular way to get AES/EBU or S/PDIF. See http://www.cirrus.com/design/products/index.cfm?c=12 The CS8405 is just a transmitter/driver. The CS8420 is a much more powerful chip with a driver, a receiver and a sample rate converter that can be combined in various ways. -- Dave Tweed -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.