Industrial Temperature Rated USB 2.0
Datasheet |
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4.2.1.11 | Register 0Ah: Port Disable For | |
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BIT |
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NUMBER | BIT NAME | DESCRIPTION |
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7:0 | PORT_DIS_SP | Port Disable |
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| is available, ‘1’ = port is disabled. |
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| During |
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| (PRTMAP_EN='0'), this selects the ports which will be permanently |
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| disabled, and are not available to be enabled or enumerated by a Host |
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| Controller. The ports can be disabled in any order, the internal logic will |
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| automatically report the correct number of enabled ports to the USB Host, |
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| and will reorder the active ports in order to ensure proper function. |
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| Bit 7= Reserved, always = ‘0’ |
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| Bit 6= Reserved, always = ‘0’ |
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| Bit 5= Reserved, always = ‘0’ |
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| Bit 4= Reserved, always = ‘0’ |
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| Bit 3= Reserved, always = ‘1’ |
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| Bit 2= 1; Port 2 is disabled |
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| Bit 1= 1; Port 1 is disabled |
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| Bit 0= Reserved, always = ‘0’ |
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4.2.1.12Register 0Bh: Port Disable For Bus-Powered Operation
BIT |
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NUMBER | BIT NAME | DESCRIPTION |
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7:0 | PORT_DIS_BP | Port Disable |
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| is available, ‘1’ = port is disabled. |
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| During |
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| (PRTMAP_EN='0'), this selects the ports which will be permanently |
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| disabled, and are not available to be enabled or enumerated by a Host |
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| Controller. The ports can be disabled in any order, the internal logic will |
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| automatically report the correct number of enabled ports to the USB Host, |
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| and will reorder the active ports in order to ensure proper function. |
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| When using the internal default option, the PRT_DIS[1:0] pins will disable the |
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| appropriate ports. |
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| Bit 7= Reserved |
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| Bit 6= Reserved |
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| Bit 5= Reserved |
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| Bit 4= Reserved |
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| Bit 3= Reserved, always = ‘1’ |
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| Bit 2= 1; Port 2 is disabled |
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| Bit 1= 1; Port 1 is disabled |
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| Bit 0 is Reserved, always = ‘0’ |
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SMSC USB2512Ai | 19 | Revision 1.97 |
| DATASHEET |
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