I have the following problem:
I wanted to test some audioboards (using CS5361 , own design and pcb) with teensy 3.2.
So, I use spring load pins (from Mill max) (Digikey ED90345-ND) to test the board without soldering the board to an T3.2 adapter board. Obviously final configuration is soldered.
Doing so, I run into problems as frequently the most significant bit was not transfered correctly (e.g. missing for negative number). (so for 33kHz sampling frequency: MCLK, BCLK, FS were 17.0667 2.1333 0.0333 MHz)
only reducing the sampling frequency to 25 kHz (MCLK, BCLK, FS = 12.8000 1.6000 0.0250 MHz) I got error-free data.
I assume that the Pogo pins could limit the transfer rate, in particular, they may have a LP characteristics that would result in the incorrect transfer of the first Bit (MSB).
Unfortunately, I have no oscilloscope that could show me the waveform of the I2S signals.
- Anyone out there who has experience with Pogo pins and high speed digital data transfer?
- should pogo pins be used tight (full pressed) or with little load?
I wanted to test some audioboards (using CS5361 , own design and pcb) with teensy 3.2.
So, I use spring load pins (from Mill max) (Digikey ED90345-ND) to test the board without soldering the board to an T3.2 adapter board. Obviously final configuration is soldered.
Doing so, I run into problems as frequently the most significant bit was not transfered correctly (e.g. missing for negative number). (so for 33kHz sampling frequency: MCLK, BCLK, FS were 17.0667 2.1333 0.0333 MHz)
only reducing the sampling frequency to 25 kHz (MCLK, BCLK, FS = 12.8000 1.6000 0.0250 MHz) I got error-free data.
I assume that the Pogo pins could limit the transfer rate, in particular, they may have a LP characteristics that would result in the incorrect transfer of the first Bit (MSB).
Unfortunately, I have no oscilloscope that could show me the waveform of the I2S signals.
- Anyone out there who has experience with Pogo pins and high speed digital data transfer?
- should pogo pins be used tight (full pressed) or with little load?