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USB2517 数据表(PDF) 46 Page - Microchip Technology

部件名 USB2517
功能描述  USB 2.0 Hi-Speed 7-Port Hub Controller
PDF  58 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB2517 数据表(HTML) 46 Page - Microchip Technology

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USB2517/USB2517I
DS00001598B-page 46
2013-2016 Microchip Technology Inc.
7.6.3
USB BUS RESET
In response to the upstream port signaling a reset to the Hub, the Hub does the following:
1.
Sets default address to 0.
2.
Sets configuration to: Unconfigured.
1. Negates PRTPWR[7:1] to all downstream ports.
2. Clears all TT buffers.
3. Moves device from suspended to active (if suspended).
4. Complies with Section 11.10 of the USB 2.0 Specification for behavior after completion of the reset
sequence.
The Host then configures the Hub and the Hub’s downstream port devices in accordance with the USB Specification.
Note:
The Hub does not propagate the upstream USB reset to downstream devices.



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