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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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USB334X датащи(PDF) 12 Page - Microchip Technology |
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USB334X датащи(HTML) 12 Page - Microchip Technology |
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12 / 92 page  USB334x DS00002646A-page 12 2009-2018 Microchip Technology Inc. 22 RESETB Input, CMOS, Low When low, the part is suspended and the 3.3V and 1.8V regulators are disabled. When high, the USB334x will operate as a normal ULPI device, as described in Section 5.6.2. The state of this pin may be changed asynchronously to the clock signals. When asserted for a minimum of 1 microsecond and then de-asserted, the ULPI registers are reset to their default state and all internal state machines are reset. 23 VDD18 Power N/A 1.8V Regulator Output. A 1.0uF (<1 ohm ESR) bypass capacitor to ground is required for regulator stability. The bypass capacitor should be placed as close as possible to the USB334x. 24 STP Input, CMOS High The Link asserts STP for one clock cycle to stop the data stream currently on the bus. If the Link is sending data to the PHY, STP indicates the last byte of data was on the bus in the previous cycle. FLAG GND Ground N/A Ground. TABLE 2-2: USB3343 PIN DESCRIPTIONS (CONTINUED) Pin Name Direction/ Type Active Level Description |
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