Datasheet Texas Instruments TUSB2077APTRG4 — 数据表

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SLLS414F – MARCH 2000 – REVISED AUGUST 2015 TUSB2077A 7-Port Hub for the Universal Serial Bus With Optional
Serial EEPROM Interface
1 Features 2 Applications 3 Description
The TUSB2077A hub is a 3.3-V CMOS device that
provides up to seven downstream ports in compliance
with the USB 2.0 specification. Because this device is
implemented with a digital state machine instead of a
microcontroller, no software programming is required.
Fully compliant USB transceivers are integrated into
the ASIC for all upstream and downstream ports. The
downstream ports support full-speed and low-speed
devices by automatically setting the slew rate
according to the speed of the device attached to the
ports. The configuration of the BUSPWR terminal
selects either the bus-powered or self-powered mode.
The introduction of the DP0 pull-up resistor disable
terminal, DP0PUR, makes it much easier to …