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USB2514 데이터시트(PDF) 48 Page - Microchip Technology

부품명 USB2514
상세설명  USB 2.0 Hi-Speed Hub Controller
PDF  63 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB2514 데이터시트(HTML) 48 Page - Microchip Technology

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USB 2.0 Hi-Speed Hub Controller
Datasheet
Revision 2.2 (02-17-12)
48
SMSC USB251xB/xBi
DATASHEET
5.5.2
USB Bus Reset
In response to the upstream port signaling a reset to the hub, the hub does the following:
1. Sets default internal USB address to 0
2. Sets configuration to: unconfigured
3. Negates PRTPWR[x:1] to all downstream ports unless battery charging (BC_EN[x:1]) is enabled
4. Clears all TT buffers
5. Moves device from suspended to active (if suspended)
6. Complies with Section 11.10 of the USB 2.0 Specification [1] 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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