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USB2503 датащи(PDF) 42 Page - SMSC Corporation |
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USB2503 датащи(HTML) 42 Page - SMSC Corporation |
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42 / 43 page ![]() Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 42 SMSC USB2503/USB2503A DATASHEET Chapter 8 AC Specifications 8.1 Oscillator/Clock Crystal: Parallel Resonant, Fundamental Mode, 24 MHz ±100ppm. External Clock: 50% Duty cycle ± 10%, 24 MHz ± 100ppm, Jitter < 100ps rms. 8.1.1 SMBus Interface: The SMSC Hub conforms to all voltage, power, and timing characteristics and specifications as set forth in the SMBus 1.0 Specification for Slave-Only devices (except as noted in Section 5.3). 8.1.2 I2C EEPROM: Frequency is fixed at 59KHz ± 20%. 8.1.3 USB 2.0 The Hub conforms to all voltage, power, and timing characteristics and specifications as set forth in the USB 2.0 Specification. Please refer to the USB Specification for more information. |
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