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USB2422 Datasheet(PDF) 27 Page - Microchip Technology |
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USB2422 Datasheet(HTML) 27 Page - Microchip Technology |
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27 / 47 page  2013 - 2015 Microchip Technology Inc. DS00001726B-page 27 USB2422 4.4.11 PORT DISABLE FOR SELF-POWERED OPERATION REGISTER (PDS) 4.4.12 PORT DISABLE FOR BUS-POWERED OPERATION REGISTER (PDB) Address: 0Ah Size: 8 bits Bits Description Type Default 7:0 Port Disable Self-Powered (PORT_DIS_SP) Disables 1 or more ports. 0 = port is available 1 = port is disabled During Self-Powered operation, when 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[1:0] pins will disable the appropriate ports. Bit 7= Reserved Bit 6= Reserved Bit 5= Reserved Bit 4= Reserved Bit 3= Reserved Bit 2= Port 2 Disable Bit 1= Port 1 Disable Bit 0= Reserved R/W 00h Address: 0Bh Size: 8 bits Bits Description Type Default 7:0 Port Disable Bus-Powered (PORT_DIS_BP) Disables 1 or more ports. 0 = port is available 1 = port is disabled During Bus-Powered operation, when 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[1:0] pins will disable the appropriate ports. Bit 7= Reserved Bit 6= Reserved Bit 5= Reserved Bit 4= Reserved Bit 3= Reserved Bit 2= Port 2 Disable Bit 1= Port 1 Disable Bit 0= Reserved R/W 00h |
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