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Hello,
now i'm working with the BCM92073X board.
So Pin 32/33 (TX/RX) have as standard 1.8V. But i need 3.3V.
If i read the schematic right i musst change the RFB1,RFB2 and C22 to get 3.3V on Pin 32/33!?!?
Regards
Asper
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HCI UART
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Today, I changed the resistors RFB1,RFB2 to 470k and 150k.
Now i have 3.3V at PIN 32/33, it works xD.
But to solder 0402 resistors by hand is not easy.
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I didn't try it. But it seems to work.
What voltage do you input?
If it's 3.3V, how about changing SW3 from 2-3 to 1-2?
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I use USB 5V because i have no battery .
For a test I have a cable to 3V3_FTDI and VDDIO_HCI soldered and put SW4 P3 OFF to get 3.3V on MAX3395E Pin12 (VL).
But it doesn't work.
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Today, I changed the resistors RFB1,RFB2 to 470k and 150k.
Now i have 3.3V at PIN 32/33, it works xD.
But to solder 0402 resistors by hand is not easy.