AT43312A

更新时间： 2024-11-26 04:07:15

品牌	Logo	应用领域
爱特美尔 - ATMEL		控制器
页数	文件大小	规格书
28页	309K
描述
Self- and Bus-Bus-powered USB Hub Controller

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中文翻译

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数据手册

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AT43312A 数据手册

Features

• Full Compliance with USB Spec Rev 1.1

• Four Downstream Ports

• Full-speed and Low-speed Data Transfers

• Bus-powered Controller

• Bus-powered or Self-powered Hub Operation

• Per Port Overcurrent Monitoring

• Individual Port Power Control

• USB Connection Status Indicators

• 5V Operation with On-chip 3.3V Format

• 32-lead SOIC and LQFP

Self- and Bus-

powered USB

Hub Controller

• Green (Pb/Halide-free/RoHS Compliant) Package Options Available

Overview

Introduction

The AT43312A is a 5 port USB hub chip supporting one upstream and four down-

stream ports. The AT43312A connects to an upstream hub or Host/Root Hub via Port0

and the other ports connect to external downstream USB devices. The hub re-trans-

mits the USB differential signal between Port0 and Ports[1:4] in both directions. A USB

hub with the AT43312A can operate as a bus-powered or self-powered through chip’s

power mode configuration pin. In the self-powered mode, port power can be switched

or unswitched. Overcurrent reporting and port power control can be individual or glo-

bal. An on-chip power supply eliminates the need for an external 3.3V supply.

AT43312A

The AT43312A supports the 12-Mb/sec full speed as well as 1.5-Mb/sec slow speed

USB transactions. To reduce EMI, the AT43312A’s oscillator frequency is 6 MHz even

though some internal circuitry operates at 48 MHz.

The AT43312A consists of a Serial Interface Engine, a Hub Repeater, and a Hub

Controller.

SOIC

LQFP Top View

PWR2

PWR3

PWR4

VCC5

VSS

32 PWR1

31 DP4

30 DM4

29 DP3

28 DM3

27 VSS

26 DP2

25 DM2

24 CEXT

23 DP1

22 DM1

21 DP0

20 DM0

19 STAT1

18 STAT2

17 STAT3

DP3

DM4

24 DMO

23 STAT1

22 STAT2

21 STAT3

20 STAT4

19 SELF/BUS

18 LPSTAT

17 OVC1

OSC1

OSC2

LFT

DP4

PWR1

PWR2

PWR3

PWR4

VCC5

TEST

OVC4 10

OVC3 11

OVC2 12

OVC1 13

LPSTAT 14

SELF/BUS 15

STAT4 16

1255G–USB–05/06

12 3 4 5 6 7...28

中文翻译

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与AT43312A相关器件

型号	品牌	获取价格	描述	数据表
AT43312A_06	ATMEL	获取价格	Self- and Bus-Bus-powered USB Hub Controller
AT43312A-6AC	ETC	获取价格	BUS CONTROLLER
AT43312A-6PC	ETC	获取价格	BUS CONTROLLER
AT43312A-6SC	ETC	获取价格	BUS CONTROLLER
AT43312A-AC	ATMEL	获取价格	Self- and Bus-Bus-powered USB Hub Controller
AT43312A-AL	ATMEL	获取价格	暂无描述
AT43312A-AU	ATMEL	获取价格	Self- and Bus-Bus-powered USB Hub Controller
AT43312A-SC	ATMEL	获取价格	Self- and Bus-Bus-powered USB Hub Controller
AT43312A-SU	ATMEL	获取价格	Self- and Bus-Bus-powered USB Hub Controller
AT43312-PM	MICROCHIP	获取价格	LAN Controller, 4 Channel(s), 1.5MBps, PDIP32