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USB2503 数据表(PDF) 29 Page - SMSC Corporation |
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USB2503 数据表(HTML) 29 Page - SMSC Corporation |
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29 / 43 page ![]() Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 29 Revision 2.1 (12-06-06) DATASHEET 5.3.9.10 Register 09h: Non-Removable Device (Reset = 0x00) 5.3.9.11 Register 0Ah: Port Disable For Self Powered Operation (Reset = 0x00) 5.3.9.12 Register 0Bh: Port Disable For Bus Powered Operation (Reset = 0x00) 5.3.9.13 Register 0Ch: Max Power For Self Powered Operation (Reset = 0x00) BIT NUMBER BIT NAME DESCRIPTION 7:0 NR_DEVICE Non-Removable Device: Indicates which port(s) include non-removable devic- es. ‘0’ = port is removable, ‘1’ = port is non-removable. Bit 7= Reserved Bit 6= Reserved Bit 5= Reserved Bit 4= 1; Reserved . Bit 3= 1; Port 3 non-removable. Bit 2= 1; Port 2 non-removable. Bit 1= 1; Port 1 non removable. Bit 0 is Reserved, always = ‘0’. 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. Bit 7= Reserved Bit 6= Reserved Bit 5= Reserved Bit 4= Reserved1 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. Bit 7= Reserved Bit 6= Reserved Bit 5= Reserved Bit 4= Reserved1 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 |
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