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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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USB4640 датащи(PDF) 54 Page - SMSC Corporation |
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USB4640 датащи(HTML) 54 Page - SMSC Corporation |
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54 / 64 page  High Speed Inter-Chip (HSIC) USB 2.0 Hub and Flash Media Controller Datasheet Revision 1.0 (06-09-09) 54 SMSC USB4640/USB4640i DATASHEET 9.2 Ceramic Resonator 24 MHz ± 350 ppm Figure 9.3 Ceramic Resonator Usage with SMSC IC 9.3 External Clock 50% Duty cycle ± 10%, 24 MHz ± 350 ppm, Jitter < 100 ps rms. The external clock is recommended to conform to the signaling level designated in the JESD76-2 specification on 1.8 V CMOS Logic. XTAL2 should be treated as a no connect. 9.3.1 I2C EEPROM Frequency is fixed at 58.6 kHz ± 20% 9.3.2 USB 2.0 The SMSC device conforms to all voltage, power, and timing characteristics and specifications as set forth in the USB 2.0 Specification. Please refer to the USB 2.0 Specification for more information. |
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