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USB2503 bảng dữ liệu(PDF) 25 Page - SMSC Corporation

tên linh kiện USB2503
Giải thích chi tiết về linh kiện  USB 2.0 High-Speed 4-Port Hub Controller
PDF  46 Pages
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nhà sản xuất  SMSC [SMSC Corporation]
Trang chủ  http://www.smsc.com
Logo SMSC - SMSC Corporation

USB2503 bảng dữ liệu(HTML) 25 Page - SMSC Corporation

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USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
SMSC USB2514
25
Revision 1.92 (05-08-07)
DATASHEET
4.3.1.11
Register 0Ah: Port Disable For Self Powered Operation (Reset = 0x00)
4.3.1.12
Register 0Bh: Port Disable For Bus Powered Operation (Reset = 0x00)
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
PORT_DIS_SP
Port Disable Self-Powered: Disables 1 or more contiguous ports. ‘0’ = port
is available, ‘1’ = port is disabled.
During Self-Powered operation, 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.
Bit 7= Reserved
Bit 6= Reserved
Bit 5= Reserved
Bit 4= 1; Port 4 is disabled
Bit 3= 1; Port 3 is disabled
Bit 2= 1; Port 2 is disabled
Bit 1= 1; Port 1 is disabled
Bit 0 is Reserved, always = ‘0’
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
PORT_DIS_BP
Port Disable Bus-Powered: Disables 1 or more contiguous ports. ‘0’ = port
is available, ‘1’ = port is disabled.
During Bus-Powered operation, 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[1:0] pins will disable the
appropriate ports.
Bit 7= Reserved
Bit 6= Reserved
Bit 5= Reserved
Bit 4= 1; Port 4 is disabled
Bit 3= 1; Port 3 is disabled
Bit 2= 1; Port 2 is disabled
Bit 1= 1; Port 1 is disabled
Bit 0 is Reserved, always = ‘0’



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