Hi Zak-san
Would you advise additional 4 customer questions for below link of E2E answer at the bottom of this mail?
1. Rise and fall times are measured from 10% to 90% of IN to OUT signal swing.
Please tell me the meaning of this sentence after from. It can be taken to mean
"the time difference from the 10% level of the input signal to 90% of the output signal",
but it seems inappropriate as a definition of rise / fall time.
Is the measured value of rise / fall time of a single signal specified by the transition time of 10↔90%?
2. The rule that Rise / fall time of all signals <10ns is also described in Master mode on p20 / 34,
but in Master mode, all I2S related signals are output. Does this mean that the total I2S output of
PCM1802 satisfies @ 20pF load with a transition time of 10ns or less of 10↔90%?
3. About tr / tf 10ns max.
Applicable to LRCK and BCK When fs = 48kHz, LRCK t = 20.83us (20833ns), BCK t = 325ns,
which means that the signal has a very long period. Considering this, it looks like a very strict
condition, but is it necessary to meet 10ns max even under this condition?
* For example, This is at 192kHz case and at 48kHz there is some room for relaxation, etc?
4. What kind of problem can be considered if the 10ns spec cannot be met?
Thanks
Best regards,
Shidara