![]() Neither Xilinx nor Microsemi has anything this small and cheap. (Why Lattice? Cheaper than Altera MAX 10. So project for the next couple of evenings is to port the code over to Lattice (not too hard, most of it is just VHDL), rig up an I2S source and test it all on a $20 dev board. My code header comments include a date, which is a couple of months before the thread. Continue turning up the headunit and you should see the. ![]() "Didn't I discuss this on the GroupDIY forum?" YES I DID, in the thread noted above, in 2009. Play track 1 on test CD, turn the volume control up until you see the signal detect LED illuminate. ![]() I check the code out of the repo, look through it, and my comments looked familiar. Clipping detectors can also work as portable circuits that signal when clipping occurs on the output waveform of an audio stage. Deep in the dusty corners of my Subversion repository was a design that never got built, which included a peak- and average-display meter section, all in VHDL, which was prototyped on a Xilinx Spartan3AN. What is a Clipping Detector Essentially, the clipping detector is an accessory that helps you detect clipping in mixers, amplifiers, and various other audio units. Didn't I already implement a meter in an FPGA? YES I DID. And you can write the Mico firmware in C!īut good christ the tools are complicated! Didn't I learn my lesson doing Xilinx EDK and MicroBlaze? YES I DID.Īnd then I had a thought - this is deja vu all over again. Tryme 45LEDs Solar Lights Outdoor Clip Motion Sensor Lights 3 Modes 3 Mounting Ways IP65 Waterproof Wireless Security Light for Fence, Deck, Wall, Garage, Patio (2 Pack) 4.4 (602) 3299 (16.50/Count) Save 3.00 with coupon FREE delivery Fri, Apr 14 Or fastest delivery Wed, Apr 12 More Buying Choices 30. OK, what about implementing I2S in an FPGA or CPLD and gluing it to the micro (over SPI, or over a parallel External Memory Interface bus)? Even small FPGAs are too big.īut wait! Lattice has their Mico8 8-bit processor you can synthesize, and a $6 MachXO2 device will have more than enough space to implement the custom logic and the Mico. There is, an ST part, but it's big and relatively expensive and complete overkill for the design. (The limitation was on the input BCLK rate.) OK, that sucks, maybe there's a micro with an I2S slave port that can support 192 kHz. The problem? The I2S slave port on the micro I chose would not allow for sample rates faster that 48 kHz. I had this brilliant idea: the design already has a micro which has an I2S port, so I'll just route the ADC's BCLK, LRCLK and data lines to the micro and magically the ADC data will be in the micro and I can do math on it, and then drive meter data out to LEDs using SPI to one of the serial latches JR was talking about. I dug this up because I'm implementing a meter for an ADC. For what it's worth, we had this discussion eight years ago. Clip It Hang Anywhere Outlet Automatic Wireless Hang Anywhere Motion Light 19.99 Wireless Motion LED Light Automatic Wireless Pontoon Bimini Velcro Motion.
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