Datasheet > XR22404

XR22404

更新时间： 2024-11-03 01:05:07

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
14页	465K
描述
USB 2.0 4-Port Hub

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XR22404 数据手册

XR22404

USB 2.0 4-Port Hub

Description

FEATURES

The XR22404 is a USB 2.0 4-port hub with a Single Transaction

Translator (STT). It may be configured for downstream device charging

and is compatible with Battery Charging specification revision 1.1/1.2.

ꢀ■

USB 2.0 compliant interface

ꢀ■

Compatible with Battery Charging

specification revision 1.1/1.2

LED indicators for port, hub or charging

activity

ꢀ■

The upstream USB interface has an integrated USB 2.0 PHY and

device controller that is compliant with both hi-speed (480Mbps) and

full-speed (12Mbps) and downstream PHY supporting hi-speed, full-

speed and low-speed (1.5Mbps) on each of the 4 downstream ports.

ꢀ■

Ganged port power enable

Global overcurrent sensing

Single 5V or 3.3V power supply

Single 12MHz Crystal

The XR22404 provides ganged power control and global overcurrent

sensing for the downstream ports.

APPLICATIONS

ꢀ■

USB port expansion

Docking stations

POS terminals

Factory automation and process controls

The XR22404 may be operated from either 5V or 3.3V. If powered

from 5V internal regulators provide 3.3V and 1.8V used internally by

the device. Port activity and overall hub activity indicators provide

status outputs for external LEDs. An external I²C EEPROM may be

used with the XR22404 to configure USB device descriptors.

ꢀ■

Industrial applications

Typical Application

USB Host

Upstream Phy

XR22404

Hub Controller

Port Routing

Downstream Phy x4

Device #1

Device #2

Device #3

Device #4

Figure 1. Typical Application

REV1A

1/14

12 3 4 5 6 7...14

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