USB2502-HT datasheet(29/44 Pages) SMSC

29 / 44 page

2-Port USB 2.0 Hub Controller

Datasheet

SMSC USB2502

Revision 2.1 (12-06-06)

DATASHEET

5.3.9.9

HS_DISABLE

High Speed Disable: Disables the capability to attach as either a High/Full-

speed device, and forces attachment as Full-speed only i.e. (no High-Speed

support).

0 = High-/Full-Speed.

1 = Full-Speed-Only (High-Speed disabled!)

Reserved

EOP_DISABLE

EOP Disable: Disables EOP generation of EOF1 when in Full-Speed mode.

0 = EOP generation is normal.

1 = EOP generation is disabled.

2:1

CURRENT_SNS

Over Current Sense: Indicates whether current sensing isganged.

00 = Ganged sensing (all ports together).

01 = Reserved1x = Over current sensing not supported. (must only be used

with Bus-Powered configurations!)

Reserved

BIT

NUMBER

BIT NAME

DESCRIPTION

DYNAMIC

Dynamic Power Enable: Controls the ability for the Hub to transition to Bus-

Powered operation if the local power source is removed (can revert back to

Self-Power if local power source is restored).

0 = No Dynamic auto-switching.

1 = Dynamic Auto-switching capable.

Reserved

5:4

OC_TIMER

OverCurrent Timer: Over Current Timer delay.

00 = 0.1ms

01 = 2ms

10 = 4ms

11 = 6ms

COMPOUND

Compound Device: Designates if Hub is part of a compound device.

0 = No.

1 = Yes, Hub is part of a compound device.

2:0

Reserved

BIT

NUMBER

BIT NAME

DESCRIPTION

USB2502-HT 数据表(PDF) 29 Page - SMSC Corporation

USB2502-HT 数据表(HTML) 29 Page - SMSC Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

数据表下载

链接网址

USB2502-HT 数据表(PDF) 29 Page - SMSC Corporation

USB2502-HT 数据表(HTML) 29 Page - SMSC Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

数据表 下载

链接网址

数据表下载