DSP chip

44.1 kHz External DSP Clock

What is it?

DSP external clock allows to listen to samples of 44100 Hz, 22050 Hz or 11025 Hz frequency without additional slowdown on your Falcon030 caused by resampling to F030 native ones. You can also use these frequencies for your own sample creation. For example using WinRec or Zero-X.

What do you need?

You can make an external (connected to the DSP port) or internal (soldered directly to the motherboard) version.

  1. TTL oscillator (see below)
  2. 7805 (only for the external version)
  3. DSP connector CANNON 26 pin MALE (only the external version)
You need TTL output oscillator of 22.5792 MHz frequency. It is important to assure this frequency to be exactly of this value. We use EPSON programmable oscillators. They are cheap and work very well.

You can also build a 48 kHz version. In this case you have to use 24.576 MHz oscillator.

How is it connected?

External version is connected according to this scheme:

scheme of the external clock

Internal version contains only the oscillator. The pin 3 of it is connected to the DMA chip (U36) pin 56. The pin 4 is connected to +Ucc 5V and the pin 2 to the Ground.

How it works?

Just connect the clock into DSP port. Programs as AniPlayer, FalcAmp or MPEG-2 Audio can automatically detect this hardware. Some programs don't process any detection so you have to set the usage of the external clock on manually (e.g. Zero-X or ACE). Some programms (as V-Trax) needs FDI driver. In this case you must put the FDIINIT.PRG into your AUTO folder.


If you don't venture to make this device by yourselves just contacs us. We can make and send it to you. Contact us to get the information about price.

We take no responsibility to all damages (hardware or software) caused by using these information and (or) by using the product itself!!!

Information Sources

All important information used to build this device was taken from Michael Ruge's HYPertext Chips'n'Chips. This you can find here: Michael Ruge's homepage

For Falcon030 schematic go to Schematics Mania.

© 2003 by JAY Software