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AT43301-AC PDF预览

AT43301-AC

更新时间: 2024-01-02 19:59:56
品牌 Logo 应用领域
爱特美尔 - ATMEL 控制器
页数 文件大小 规格书
27页 303K
描述
Low-cost USB Hub Controller

AT43301-AC 数据手册

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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  
Port Overcurrent Monitoring  
Port Power Switching  
5V Operation with On-chip 3.3V Regulator  
24-lead SOIC and 32-lead LQFP  
Low-cost USB  
Hub Controller  
1. Description  
The AT43301 is a 5-port USB hub chip supporting one upstream and four down-  
stream ports. The AT43301 connects to an upstream hub or host/root hub via Port0,  
while 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. The  
AT43301 is designed for very low-cost bus-powered or self-powered hub applications  
and is available in a 24-lead SOIC and a 32-lead LQFP packages. The 32-lead ver-  
sion of the AT43301, the AT43301-AC, has a 48 MHz clock input.  
AT43301  
The AT43301 supports the 12 Mb/s full speed as well as 1.5 Mb/s slow speed USB  
transactions. To reduce EMI, the AT43301’s oscillator frequency is 6 MHz even  
though some internal circuitry operates at 48 MHz.  
Figure 1-1. Pin Configurations  
32-lead LQFP Top View  
24-lead SOIC Top View  
AT43301-SC  
VCC  
VSS  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
NC  
2
DP4  
DM4  
DP3  
DM3  
DP2  
DM2  
DP1  
DM1  
DP0  
DM0  
VSS  
CEXT1  
OSC1  
OSC2  
LFT  
3
NC  
DM4  
DP4  
1
2
3
4
5
6
7
8
24 NC  
23 DP0  
4
22 DM0  
5
48  
21 VSS  
AT43301-AC  
6
VCC  
VSS  
CEXT1  
NC  
20 NC  
STAT  
7
19 SELF/BUS  
18 TEST  
17 LPSTAT  
PWR  
8
OVC  
9
LPSTAT  
TEST  
10  
11  
12  
SELF/BUS  
1137J–USB–01/06  

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