thanks John
let say i am using the same PCB material then is the bellow statement true
50ohm single ended impedance control marked in red represent all signal
lines like spi,i2c,uart, gpio including power lines in which case the track
width of power line is also 4.75 mils on external layer
Unless you are using the same PCB material and manufacturer, you should ask
your PCB manufacturer. Even the PCB manufacturing process can bring about
impedance changes. That is why the PCB manufacturer includes a impedance token
to test the impedance and then adjust their plating/edging time.
Dear BeagleBoard
I have a Beaglebone black hardware and have few question regarding the same
in some document i found the layer stack up dimension in mils it is
mistyped as inched anyway.
