USB2503A(2006) Ver la hoja de datos (PDF) - SMSC -> Microchip

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USB2503A
(Rev.:2006)

Integrated USB 2.0 Compatible 3-Port Hub

SMSC -> Microchip 

Integrated USB 2.0 Compatible 3-Port Hub

Datasheet

Chapter 4 3-Port Hub Block Diagram

Upstream Upstream 24 MHz

USB Data VBUS Crystal

3.3V

To

Pin EEPROM

1.8V Strapping or SMBus

Cap Options Master

SD SCL

VBUS

Upstream Power

PLL

1.8V

Reg.

PHY

Detect

Repeater

SIE

Internal

Defaults

Select

Serial

Interface

Controller

TT TT TT

#1 #2 #3

Port

Controller

Routing Logic

... Port #1

Downstream OC Sense

Port #3

Downstream OC Sense

PHY #1 Switch Driver

PHY #3 Switch Driver

LED Drivers

LED Drivers

Downstream OC Switch/LED

USB Data Sense Drivers

Downstream OC Switch/LED

USB Data Sense Drivers

Figure 4.1 3-Port Block Diagram

NAME

USB Bus Data

Detect Upstream

VBUS Power

Table 4.1 3-Port Hub Pin Descriptions

SYMBOL

TYPE

FUNCTION

UPSTREAM USB 2.0 INTERFACE

USBDN0

USBDP0

VBUS_DET

IO-U

These pins connect to the USB bus data signals.

I/O12

Detects state of Upstream VBUS power (indicates the

power-managed state of the upstream device).

SMSC USB2503/USB2503A

9

DATASHEET

Revision 2.1 (12-06-06)

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