USB2517 datasheet(44/58 Pages) MICROCHIP

tên linh kiện	USB2517

Giải thích chi tiết về linh kiện	USB 2.0 Hi-Speed 7-Port Hub Controller

PDF	58 Pages

Scroll/Zoom	100%

nhà sản xuất	MICROCHIP [Microchip Technology]

Trang chủ	http://www.microchip.com

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44 / 58 page

USB2517/USB2517I

DS00001598B-page 44

 2013-2016 Microchip Technology Inc.

7.6.2.2

RESET_N for EEPROM Configuration

FIGURE 7-5:

RESET_N TIMING FOR EEPROM MODE

TABLE 7-7:

RESET_N TIMING FOR EEPROM MODE

Name

Description

Min

Typ

Max

Units

RESET_N Asserted.

sec

Hub Recovery/Stabilization.

500

sec

EEPROM Read / Hub Config.

2.0

99.5

msec

USB Attach (See Note).

100

msec

Host acknowledges attach and signals USB Reset.

100

msec

USB Idle.

undefined

msec

Completion time for requests (with or without data

stage).

msec

Note:

• When in Bus-Powered mode, the Hub and its associated circuitry must not consume more than 100mA from the

upstream USB power source during t4+t5+t6+t7.

• All Power Supplies must have reached the operating levels mandated in Section 8.0, "DC Parameters", prior to

(or coincident with) the assertion of RESET_N.

RESET_N

VSS

Hardware

reset

asserted

Read Strap

Options

Read EEPROM

Set Options

Attach

USB

Upstream

USB Reset

recovery

Idle

Start

completion

request

response

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