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USB2422 数据表(PDF) 27 Page - Microchip Technology

部件名 USB2422
功能描述  2-Port USB 2.0 Hi-Speed Hub Controller
PDF  47 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB2422 数据表(HTML) 27 Page - Microchip Technology

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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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