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AT90SCR100 Datasheet(PDF) 219 Page - ATMEL Corporation |
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AT90SCR100 Datasheet(HTML) 219 Page - ATMEL Corporation |
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219 / 433 page  219 TPR0327AY–SMS–30Jan09 AT90SCR100 17.7.3 UHINT - USB Host INTerrupt Register • Bit 7 - Res : Reserved Bit This bit is reserved for future use. The value read from these bits is always 0. Do not set these bits. • Bit 6 - HWUPI : Host Wake-Up Interrupt Set by hardware when a non-idle state is detected on the USB bus. Shall be clear by software to acknowledge the interrupt. Setting by software has no effect. • Bit 5 - HSOFI : Host Start Of Frame Interrupt Set by hardware when a SOF is issued by the Host controller. This triggers a USB interrupt when HSOFE is set. Shall be cleared by software to acknowledge the interrupt. Setting by software has no effect. • Bit 4 - RXRSMI : Upstream Resume Received Interrupt Set by hardware when an Upstream Resume has been received from the Device. Shall be cleared by software. Setting by software has no effect. • Bit 3 - RSMEDI : Downstream Resume Sent Interrupt Set by hardware when a Downstream Resume has been sent to the Device. Shall be cleared by software. Setting by software has no effect. • Bit 2 - RSTI : USB Reset Sent Interrupt Set by hardware when a USB Reset has been sent to the Device. Shall be cleared by software. Setting by software has no effect. • Bit 1 - DDISCI :Device Disconnection Interrupt Set by hardware when the device has been removed from the USB bus. Shall be cleared by software. Setting by software has no effect. After having detected a disconnection, please reset the USB Host. See “Device Detection” on page 210. • Bit 0 - DCONNI : Device Connection Interrupt Set by hardware when a new device has been connected to the USB bus. Shall be cleared by software. Setting by software has no effect. Bit 7654 3 2 1 0 $009F - HWUPI HSOFI RXRSMI RSMEDI RSTI DDISCI DCONNI UHINT Read/write R R/W R/W R/W R/W R/W R/W R/W Initial value 0000 0 0 0 0 0x00 |
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