Routing Differential Signals

Differential Signalling uses a pair of complementary signals to cary data, that is each wire is carrying the opposite signal, those signals are subtracted at the receiving end and the result is either 0 for noise or 1 for a valid signal. This technique is used with high speed signals to reduce crosstalk and EMI, examples of differential signalling include the twisted pairs inside Ethernet cables, HDMI and USB. When routing...

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STM32F4 Discovery Quick Start Guide

I finally got my hands on an STM32F4 Discovery board, those are super cheap STM32F407 ARM Cortex-M4 boards from ST. The Cortex-M4 is perfect for DSP applications as it has SIMD and an FPU and it also runs at 168Mhz. As for the board, it seems okay given its price, I really hate the headers though and it only has a few components namely, an audio DAC, a chip microphone, an accelerometer and a few LEDs. There's also an...

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