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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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USB3290 датащи(PDF) 16 Page - SMSC Corporation |
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USB3290 датащи(HTML) 16 Page - SMSC Corporation |
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16 / 46 page  Small Footprint Hi-Speed USB 2.0 Device PHY with UTMI Interface Datasheet Revision 1.5 (11-02-07) 16 SMSC USB3290 DATASHEET Note 6.5 VDD3.3 = 3.0 to 3.6V; VSS = 0V; TA = -40 oC to 85oC; unless otherwise specified. 6.1 Driver Characteristics of Full-Speed Drivers in High-Speed Capable Transceivers The USB3290 uses a differential output driver to drive the USB data signal onto the USB cable. Figure 6.1 Full-Speed Driver VOH/IOH Characteristics for High-speed Capable Transceiveron page 17 shows the V/I characteristics for a full-speed driver which is part of a high-speed capable transceiver. The normalized V/I curve for the driver must fall entirely inside the shaded region. The V/I region is bounded by the minimum driver impedance above (40.5 Ohm) and the maximum driver impedance below (49.5 Ohm). The output voltage must be within 10mV of ground when no current is flowing in or out of the pin. Table 6.5 Dynamic Characteristics: Digital UTMI Pins ( Note 6.5) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS UTMI Timing DATA[7:0] TPD Output Delay. Measured from PHY output to the rising edge of CLKOUT 25 ns RXVALID RXACTIVE RXERROR LINESTATE[1:0] TXREADY DATA[7:0] TSU Setup Time. Measured from PHY input to the rising edge of CLKOUT. 5ns TXVALID OPMODE[1:0] XCVRSELECT TERMSELECT DATA[7:0] TH Hold time. Measured from the rising egde of CLKOUT to the PHY input signal edge. 0ns TXVALID OPMODE[1:0] XCVRSELECT TERMSELECT |
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