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參數(shù)資料
| 型號： | AT43312A |
| 廠商： | Atmel Corp. |
| 英文描述： | Self- and Bus-powered USB Hub Controller(自供電和總線供電USB集線器控制器) |
| 中文描述： | 自和總線供電的USB集線器控制器（自供電和總線供電的USB集線器控制器） |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 249K |
| 代理商： | AT43312A |
1
Features
Full Compliance with USB Spec Rev 1.1
Four Downstream Ports
Full-speed and Low-speed Data Transfers
Per Port Overcurrent Monitoring
Individual Port Power Control
USB Connection Status Indicators
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-
transmits 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 individ-
ual or global. An on-chip power supply eliminates the need for an external 3.3V
supply.
The AT43312A supports the 12 Mb/s full speed as well as 1.5 Mb/s 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.
The Serial Interface Engine’s tasks are:
Manage the USB communication protocol
USB signaling detection/generation
Clock/Data separation, data encoding/decoding, CRC generation/checking
Data serialization/de-serialization
Self- and Bus-
powered USB
Hub Controller
AT43312A
Rev. 1255B–07/99
PDIP/SOIC
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PWR2
PWR3
PWR4
VCC5
VSS
OSC1
OSC2
LFT
TEST
OVC4
OVC3
OVC2
OVC1
LPSTAT
SELF/BUS
STAT4
PWR1
DP4
DM4
DP3
DM3
VSS
DP2
DM2
CEXT
DP1
DM1
DP0
DM0
STAT1
STAT2
STAT3
LQFP Top View
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DP3
DM4
DP4
PWR1
PWR2
PWR3
PWR4
VCC5
DMO
STAT1
STAT2
STAT3
STAT4
SELF/BUS
LPSTAT
OVC1
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(continued)
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PDF描述 |
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| AT43312 | Self- and Bus- Powered USB Hub Controller |
| AT43320 | Full-speed USB Hub/Function Microcontroller |
| AT43DK301 | Low-Cost USB Hub Development Kit |
| AT43DK312A | USB Hub Development Kit |
| AT43USB320A-AC | Full-speed USB Microcontroller with an Embedded Hub |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT43312A_06 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Self- and Bus-Bus-powered USB Hub Controller |
| AT43312A-6AC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BUS CONTROLLER |
| AT43312A-6PC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BUS CONTROLLER |
| AT43312A-6SC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BUS CONTROLLER |
| AT43312A-AC | 功能描述:USB 接口集成電路 FULL FEATURED USB HUB CONTROLLER RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
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