USB2512B-AEZG データシートの表示（PDF） - SMSC -> Microchip

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USB2512B-AEZG

USB 2.0 Hi-Speed Hub Controller

SMSC -> Microchip 

Chapter 2 Block Diagram

USB 2.0 Hi-Speed Hub Controller

Datasheet

To upstream Upstream

VBUS

USB data

3.3 V

24 MHz

crystal

To I2C EEPROM or

SMBus master

SDA SCK

Bus-

power

detect/

Vbus pulse

Upstream

PHY

Repeater

VDDA

1.2 V reg

PLL

Serial

interface

engine

Serial

interface

Controller

3.3 V

1.2 V reg

VDDCR

... TT

TT

Port

#1

#x controller

Routing and port re-ordering logic

PHY#1

... Port #1

OC sense

switch driver/

LED drivers

PHY#x

Port #x

OC sense

switch driver/

LED drivers

USB data

downstream

OC Port

sense power

switch/

LED

drivers

USB data

downstream

OC Port

sense power

switch/

LED

drivers

x indicates the number of available downstream ports: 2, 3, or 4

Figure 2.1 USB251xB/xBi Hub Family Block Diagram

Revision 2.2 (02-17-12)

10

DATASHEET

SMSC USB251xB/xBi

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