Hi Team,
Using "TUSB 320 - HA-EVM":
The TUSB 320 HA measures the waveforms of the CC1 and CC2 signal lines in UFP mode.
Looking at "Figure 8 -12" on Datasheet p 26 of "TUSB 320 HA",
When USB is not connected in UFP mode, the CC1 and 2 lines were supposed to output Low.
When we actually measured it, we measured a waveform like the DRP mode, which repeats High and Low at regular intervals.
(The waveform is shown on the left side of "Figure 8 -8" on the data sheet p 22 of "TUSB 320 HA".)
The specifications of the "TUSB 320 HA" include:
What is the waveform of CC1 and 2 when USB is not connected in UFP mode?
(Whether it outputs Low or repeats High/Low at regular intervals, a waveform that is neither,
Which one? )
The status of "TUSB 320 - HA-EVM" at the time of measurement is as follows.
Power: 5V input from J5 (DC jack)
SW 1: No. 1 ~ 7 - > OFF, No. 8 - > ON
Regards,
Shinji Kaneoka
