SMSC USB2504A Manual De Usuario
Integrated USB 2.0 Compatible 4-Port Hub
Datasheet
SMSC USB2504/USB2504A
45
Revision 2.3 (08-27-07)
DATASHEET
Chapter 9 AC Specifications
9.1
Oscillator/Clock
Crystal: Parallel Resonant, Fundamental Mode, 24 MHz
±100ppm.
External Clock: 50% Duty cycle
± 10%, 24 MHz ± 100ppm, Jitter < 100ps rms.
9.1.1
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
forth in the SMBus 1.0 Specification for Slave-Only devices (except as noted in
).
9.1.2
I2C EEPROM:
Frequency is fixed at 59KHz
± 20%.
9.1.3
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.
the USB 2.0 Specification. Please refer to the USB Specification for more information.