TUSB1210 Intermittent Clock Output and ULPI Interface Issues
Part Number: TUSB1210
Hi! My name is Barney and my team is working on a project, in which I'm required to read USB MIDI keyboard data via USB host, but I can't get TUSB1210 to work properly.
As you can see in the schematic, The chip can only work on output clock mode, but I can't detect any signal coming from CLOCK. Also there's no voltage on VBUS or CPEN, so no power on USB port.
Here's the schematic of related parts of PYNQ-Z2.
In the gpio I have DATA0~7, DIR, STP, NXT, CLK and RESETN to use for I/O.
I could use some serious help on what really to do to correctly configure this chip to make it work. Thanks.
what signal on REFCLK looks like? it has to be 3v to 3.6v squarewave
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In reply to Brian Zhou:
It's 3.6v squarewave as expected
In reply to user6029821:
did you follow power sequence on figure 4.1?
what USB controller you use?
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