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USB3813I-1080XY 参数 Datasheet PDF下载

USB3813I-1080XY图片预览
型号: USB3813I-1080XY
PDF下载: 下载PDF文件 查看货源
内容描述: USB 2.0高速3端口集线器控制器经过优化,用于便携式应用 [USB 2.0 Hi-Speed 3-Port Hub Controller Optimized for Portable Applications]
分类和应用: 控制器便携式
文件页数/大小: 68 页 / 882 K
品牌: SMSC [ SMSC CORPORATION ]
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USB 2.0 Hi-Speed 3-Port Hub Controller Optimized for Portable Applications  
Datasheet  
Table 3.1 Ball Descriptions (continued)  
NUM  
BALLS  
BUFFER  
TYPE  
NAME  
SYMBOL  
DESCRIPTION  
Suspend  
Output  
SUSPEND  
PU  
This signal is used to indicate that the entire hub  
has entered the USB suspend state and that  
VBUS current consumption should be reduced in  
accordance with the USB specification. Refer to  
Section 8.7, "Suspend (SUSPEND)," on page 55  
for additional information.  
Note:  
SUSPEND must be enabled via the  
Protouch configuration tool.  
1
Interrupt  
Request Input  
IRQ_N  
INT_N  
IS  
This active-low signal allows external hardware to  
interrupt the device. Refer to Section 8.8,  
"Interrupt Requests (IRQ_N)," on page 56 for  
additional information.  
Interrupt  
Output  
OD8  
This active-low signal allows the device to output  
an interrupt to external hardware. Refer to  
Section 8.9, "Interrupt Output (INT_N)," on  
page 56 for additional information.  
USB Port  
Control  
PRTCTLA  
OD8/IS  
(PU)  
This pin functions as both the downstream USB  
port power enable output (PRTPWRA) and the  
downstream USB port over-current sense input  
(OCSA_N).  
1
POWER  
Battery  
Power Supply  
Input  
VBAT  
P
Battery power supply input. When VBAT is  
connected directly to a +3.3V supply from the  
system, the internal +3.3V regulator runs in  
dropout and regulator power consumption is  
eliminated. A 4.7 μF (<1 Ω ESR) capacitor to  
ground is required for regulator stability. The  
capacitor should be placed as close as possible  
to the device. Refer to Chapter 4, "Power  
Connections," on page 17 for power connection  
information.  
1
+3.3V Power  
Supply  
VDD33  
P
P
+3.3V power supply. A 1.0 μF (<1 Ω ESR)  
capacitor to ground is required for regulator  
stability. The capacitor should be placed as close  
as possible to the device. Refer to Chapter 4,  
"Power Connections," on page 17 for power  
connection information.  
1
1
1
+1.8-3.3V  
Core Power  
Supply Input  
VDDCOREREG  
+1.8-3.3V core power supply input to internal  
+1.2V regulator. This pin may be connected to  
VDD33 for single supply applications when VBAT  
equals +3.3V. Running in a dual supply  
configuration with VDDCOREREG at a lower  
voltage, such as +1.8V, may reduce overall  
system power consumption. Refer to Chapter 4,  
"Power Connections," on page 17 for power  
connection information.  
+1.2V Core  
Power Supply  
VDDCR12  
P
+1.2V core power supply. A 1.0 μF (<1 Ω ESR)  
capacitor to ground is required for regulator  
stability. The capacitor should be placed as close  
as possible to the device. Refer to Chapter 4,  
"Power Connections," on page 17 for power  
connection information.  
Revision 1.0 (06-17-13)  
14  
SMSC USB3813  
DATASHEET