I have recently started to work with the following TI Chip For Detecting Knock. It conveniently contains a DSP chip control over SPI and is quite handy.
Do additional standalone units exist for this? I thought it would be pretty neat to have a multichannel device that I could use to offload calculations for accelerometers. I would run the accel outputs to a SPI A2D for standard inputs while also running the accel outputs to a dsp/a2d for the integral values to send over SPI.
Thoughts?
Interesting chip, not come across that one before.
Do additional standalone units exist for this?
Not sure what you are asking. Is it does some one make up this unit on a board or shield? If so I think not as it is an automotive product.
I guess I screwed that up.
I am making a shield that uses that chip for the automotive world. My question is do you know of any chip manufactures, like TI, that makes simple digital filters that are SPI controlled in a similar fashion that the TPIC8101 uses one? I think it would be very valuable to for accel applications.
What's wrong in using the TI chip, won't they sell it you? If so it is likely that you won't get an equivalent from other manufacturers for the same reason. Some consumer chips are like this, they won't sell you just a few you have to buy thousands to protect any possible manufacturer.
Looks like I need to try this again....
Project 1:
Using the TPIC8101 for my automotive project. No problems here.
Project 2:
Looking at some accelerometers and am looking for a chip that does something similar but is maybe 4 channels in and out, does not have a rectifier, but has an integrator.
Thanks,
Frank
Frank how are you coming with the project.
I would like to use the same TPIC8101 , how ever i am more of a hardware guy than a coder, i am now learning.
I just want good knock detection for my car that runs MS. 
The standard way to do that is to condition the signals each with an op-amp, supply this to a quad bilateral chip and then select each channel, measure it, switch to next channel and repeat.
This may be a a more generic solution. It has 4/8 channels and uses SPI. If you can code for that other chip you should have not problem with this.