eckel@ircam.fr (Gerhard Eckel) (05/27/91)
Hello, has anybody out there a program that plays a sound file through the 56000 port? (We want to stream our sounds directly to a DAT recorder ...) Gerhard Eckel IRCAM, Paris
petrilli@geech.gnu.ai.mit.edu (Chris Petrilli) (05/28/91)
Gerhard Eckel writes: Hello, has anybody out there a program that plays a sound file through the 56000 port? (We want to stream our sounds directly to a DAT recorder ...) Before this can ever be done, you must be able to convert teh output of the 56001 port to AES format (in the US anyway) for input into a standard DAT optical/coaxial digital port. I have looked into doing this myself, in both directions, and found that Crystal Semiconductor has a perfect part. They produce a component (in CMOS of course) called the CS8401/8402 Digital Audio Interface Transmitter (there is also a receiver in the works). Here's some more info: (C) 1990 Crystal Semiconductor * Monolithic digital audio interface transmitter * Supports AES/EBU, IEC 958, S/PDIF, and EIAJ CP-340 Professional and Consumer Formats * Most mode and stand alone mode * Generates CRC codes and parity bits * On-chip RS422 line driver * Configurable buffer memory (CS8401) GENERAL DESCRIPTION The CS8401/2 are monolithic CMOS devices which encode and transmit audio data according to AES/EBU, IEC-958, S/PDIF & EAIJ CP-340 interface standards. The CS8401/2 accept audio and digital data, whcih is then multiplexed, encoded and driven onto a cable. The audio serial port is double buffered and capable of supporting a wide variety of formats. The CS8401 has a configurable internal buffer memory, loaded bia parallel port, which may be used to buffer channel status, auxilary data and/or user data. The CS8402 multiplexes the channel, user and validity data directly from serial input pins with dedicated input pins for the most important status bits. It should be VERY easy to interface this chip to the 56001 as Crystal has used it in a board with one of their (in my opinion) excellent A/Ds that directly interfaces to a 56001. If you want to get ahold of them, call: Crystal Semiconductor Corp. P.O. Box 17847 Austin, TX 78760 USA +1 512 445 7222 (voice) +1 512 445 7581 (FAX) Hope this helps. Chris -- | Chris Petrilli | petrilli@gnu.ai.mit.edu | I don't even speak for myself.