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USB2512B-AEZG 参数 Datasheet PDF下载

USB2512B-AEZG图片预览
型号: USB2512B-AEZG
PDF下载: 下载PDF文件 查看货源
内容描述: USB 2.0高速集线器控制器 [USB 2.0 Hi-Speed Hub Controller]
分类和应用: 外围集成电路控制器PC时钟
文件页数/大小: 72 页 / 1689 K
品牌: SMSC [ SMSC CORPORATION ]
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USB 2.0 Hi-Speed Hub Controller  
Datasheet  
8.2.1.11  
Register 0Ah: Port Disable For Self-Powered Operation  
BIT  
NUMBER  
BIT NAME  
DESCRIPTION  
7:0  
PORT_DIS_SP  
Port Disable Self-Powered: Disables 1 or more ports.  
0 = Port is available  
1 = Port is disabled  
During self-powered operation when mapping mode is disabled  
(PRTMAP_EN='0'), this selects the ports which will be permanently disabled,  
and are not available to be enabled or enumerated by a host controller. The  
ports can be disabled in any order, the internal logic will automatically report  
the correct number of enabled ports to the USB host, and will reorder the  
active ports in order to ensure proper function.  
When using the internal default option, the PRT_DIS_P[x:1] and  
PRT_DIS_M[x:1] pins will disable the appropriate ports.  
Bit 7= Controls Port 7  
Bit 6= Controls Port 6  
Bit 5= Controls Port 5  
Bit 4= Controls Port 4  
Bit 3= Controls Port 3  
Bit 2= Controls Port 2  
Bit 1= Controls Port 1  
Bit 0= Reserved, always = ‘0’  
8.2.1.12  
Register 0Bh: Port Disable For Bus-Powered Operation  
BIT  
NUMBER  
BIT NAME  
DESCRIPTION  
7:0  
PORT_DIS_BP  
Port Disable Bus-Powered: Disables 1 or more ports.  
0 = Port is available  
1 = Port is disabled  
During self-powered operation when mapping mode is disabled  
(PRTMAP_EN='0'), this selects the ports which will be permanently disabled,  
and are not available to be enabled or enumerated by a host Controller. The  
ports can be disabled in any order, the internal logic will automatically report  
the correct number of enabled ports to the USB host, and will reorder the  
active ports in order to ensure proper function.  
When using the internal default option, the PRT_DIS_P[x:1] and  
PRT_DIS_M[x:1] pins will disable the appropriate ports.  
Bit 7= Controls Port 7  
Bit 6= Controls Port 6  
Bit 5= Controls Port 5  
Bit 4= Controls Port 4  
Bit 3= Controls Port 3  
Bit 2= Controls Port 2  
Bit 1= Controls Port 1  
Bit 0 is Reserved, always = ‘0’  
SMSC USB251x  
41  
Revision 1.0 (3-11-09)  
DATASHEET  
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