USB2514B-AEZC データシートの表示（PDF） - Microchip Technology

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USB2514B-AEZC

USB 2.0 Hi-Speed Hub Controller

Microchip Technology 

USB251xB/xBi

2.0 BLOCK DIAGRAM

FIGURE 2-1:

USB251XB/XBI HUB FAMILY BLOCK DIAGRAM

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

DS00001692C-page 6

 2010 - 2015 Microchip Technology Inc.

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