数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

USB2512 数据表(PDF) 21 Page - SMSC Corporation

部件名 USB2512
功能描述  USB 2.0 High-Speed 2-Port Hub Controller
PDF  37 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  SMSC [SMSC Corporation]
网页  http://www.smsc.com
标志 SMSC - SMSC Corporation

USB2512 数据表(HTML) 21 Page - SMSC Corporation

Back Button USB2512 Datasheet HTML 17Page - SMSC Corporation USB2512 Datasheet HTML 18Page - SMSC Corporation USB2512 Datasheet HTML 19Page - SMSC Corporation USB2512 Datasheet HTML 20Page - SMSC Corporation USB2512 Datasheet HTML 21Page - SMSC Corporation USB2512 Datasheet HTML 22Page - SMSC Corporation USB2512 Datasheet HTML 23Page - SMSC Corporation USB2512 Datasheet HTML 24Page - SMSC Corporation USB2512 Datasheet HTML 25Page - SMSC Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 21 / 37 page
background image
USB 2.0 High-Speed 2-Port Hub Controller
Datasheet
SMSC USB2512
21
Revision 1.92 (11-28-07)
DATASHEET
4.2.1.17
Register 10h: Power-On Time
4.2.1.18
Register F6h: Boost_Up
4.2.1.19
Register F8h: Boost_2:0
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
POWER_ON_TIME
Power On Time: The length of time that it takes (in 2 ms intervals) from the
time the host initiated power-on sequence begins on a port until power is
good on that port.
BIT
NUMBER
BIT NAME
DESCRIPTION
7:2
Reserved
Reserved
1:0
BOOST_IOUT
USB electrical signaling drive strength Boost Bit for the Upstream Port.
‘00’ = Normal electrical drive strength = No boost
‘01’ = Elevated electrical drive strength = Low (approximately 4% boost)
‘10’ = Elevated electrical drive strength = Medium (approximately 8% boost)
‘11’ = Elevated electrical drive strength = High (approximately 12% boost)
Note:
“Boost” could result in non-USB Compliant parameters (one
example would be Test J/K levels), the OEM should use a 00 value
unless specific implementation issues require additional signal
boosting to correct for degraded USB signalling levels.
BIT
NUMBER
BIT NAME
DESCRIPTION
7:4
Reserved
Reserved
3:2
BOOST_IOUT_2
USB electrical signaling drive strength Boost Bit for Downstream Port ‘2’.
‘00’ = Normal electrical drive strength = No boost
‘01’ = Elevated electrical drive strength = Low (approximately 4% boost)
‘10’ = Elevated electrical drive strength = Medium (approximately 8% boost)
‘11’ = Elevated electrical drive strength = High (approximately 12% boost)
Note:
“Boost” could result in non-USB Compliant parameters (one
example would be Test J/K levels), the OEM should use a 00 value
unless specific implementation issues require additional signal
boosting to correct for degraded USB signalling levels.
1:0
BOOST_IOUT_1
USB electrical signaling drive strength Boost Bit for Downstream Port ‘1’.
‘00’ = Normal electrical drive strength = No boost
‘01’ = Elevated electrical drive strength = Low (approximately 4% boost)
‘10’ = Elevated electrical drive strength = Medium (approximately 8% boost)
‘11’ = Elevated electrical drive strength = High (approximately 12% boost)
Note:
“Boost” could result in non-USB Compliant parameters (one
example would be Test J/K levels), the OEM should use a 00 value
unless specific implementation issues require additional signal
boosting to correct for degraded USB signalling levels.



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


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com