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AT43USB355 Datasheet(PDF) 102 Page - ATMEL Corporation |
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AT43USB355 Datasheet(HTML) 102 Page - ATMEL Corporation |
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102 / 115 page ![]() 102 AT43USB355 2603G–USB–04/06 Selective Suspend, Downstream Ports Selective Suspend, Embedded Function Selective Resume, Embedded Function Hardware Firmware 1. Set or Clear Port Feature PORT_SUSPEND decoded 2. Write HPCON[2:0] and HPADD[2:0] bits 3. Suspend or resume port per command Hardware Firmware 1. Set Port Feature PORT_SUSPEND decoded 2. Disable Port 1’s end-points 3. Set GPIO to low power state if required Hardware Firmware 1. Clear Port Feature PORT_SUSPEND decoded 2. Clear Port 1 suspend status bit 3. Restore GPIO states if required 4. Wait 23 ms, then set enable status bit and suspend change bit 5. Enable Port 1 end-points 6. Send updated port status at next IN to end-point1 |
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