Dsp8148 drive 88 e1111, rgmii mode is used in the debugging, find the string on the RXCLK resistance to euro 200 or 300, DSP and computer can ping, but is limited to a rate and 10 MB model, where is this problem,

CodePudding user response:

The high frequency signal transmission, the transmission line impedance matching is very important, impedance mismatch will seriously affect the transmission performance

CodePudding user response:

The

reference 1/f, worldy response:

high frequency signal transmission, the transmission line impedance matching is very important, impedance mismatch will seriously affect the transmission performance

The 50 ohm impedance matching, should be no problem

CodePudding user response:

reference IC - 007 on the second floor response:

Quote: refer to 1st floor worldy response:

high frequency signal transmission, the transmission line impedance matching is very important, impedance mismatch will seriously affect the transmission performance

The 50 ohm impedance matching, should be no problem.

Different matching is not necessarily a 50 ohm, transmission line resistance is not the same

CodePudding user response:

PCB on impedance control was 50 euro

CodePudding user response:

The location of the series resistance has a problem

CodePudding user response:

33 euro 200 series resistance is too big, generally, PCB do the impedance control? With high-speed oscillograph under light signals,