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USB3503 Datasheet(PDF) 19 Page - SMSC Corporation |
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USB3503 Datasheet(HTML) 19 Page - SMSC Corporation |
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19 / 82 page  USB 2.0 HSIC High-Speed Hub Controller Optimized for Portable Applications Datasheet SMSC USB3503A 19 Revision 1.1 (02-07-13) DATASHEET Figure 3.2 also shows an alternate configuration option (CFGP.INTSUSP) for a suspend interrupt. This option allows the user to change the behavior of the INT_N pin to become a direct level indication of configuration and suspend status. When selected, the INT_N indicates that the entire hub has entered the USB suspend state. NOTE: Because INT_N is driven low when active, care must be taken when selecting the external pullup resistor value for this open drain output. A sufficiently large resistor must be selected to insure suspend current requirements can be satisfied for the system. |
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