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PCI tests run successfully, but the transmitter lines coming directly from the chip are both always at low level. Why?

April 26, 2017chip coming directly low PCI run successfully tests transmitter

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PCI tests run successfully, but the transmitter lines coming directly from the chip are both always at low level. Why?

1 Answer

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Bad connection from center-tap of transformer (pin 2 of HB626) to AVddT (0 ohms resistor R22 in ST demo board schematic)