參數(shù)資料
型號(hào)： GL850A
廠商： Genesys Logic, Inc.
英文描述： USB 2.0 Low-Power HUB Controller
中文描述： 個(gè)USB 2.0低功耗集線器控制器
文件頁(yè)數(shù)： 17/29頁(yè)
文件大?。?/td> 403K
代理商： GL850A
GL850A USB 2.0 Low-Power HUB Controller
2000-2007 Genesys Logic Inc. - All rights reserved.
Page 17
5.1.10. TT (Transaction Translator)
TT implements the control logic defined in section 11.14 ~ 11.22 of
USB specification Revision 2.0
. TT
basically handles the unbalanced traffic speed between the USPORT (operating in HS) and DSPORTS
(operating in FS/LS) of hub. GL850A adopts the single TT architecture to provide the most cost effective
solution. Single TT shares the same buffer control module for each downstream port. GL852 adopts
multiple TT architecture to provide the most performance effective solution. Multiple TT provides control
logics for each downstream port respectively. Please refer to GL852 datasheet for more detailed
information.
5.1.11 REPEATER/TT routing logic
REPEATER and TT are the major traffic control machines in the USB 2.0 hub. Under situation that
USPORT and DSPORT are signaling in the same speed, REPEATER/TT routing logic switches the traffic
channel to the REPEATER. Under situation that USPORT is in the high speed signaling and DSPORT is in
the full/low speed signaling, REPEATER/TT routing logic switches the traffic channel to the TT.
5.1.11.1 Connected to 1.1 Host/Hub
If an USB 2.0 hub is connected to the downstream port of an USB 1.1 host/hub, it will operate in USB 1.1
mode. For an USB 1.1 hub, both upstream direction traffic and downstream direction traffic are passing
through REPEATER. That is, the REPEATER/TT routing logic will route the traffic channel to the
REPEATER.
USB1.1 HOST/HUB
REPEATER
TT
DSPORT operating
in FS/LS signaling
USPORToperating
in FS signaling
Traffic channel
is routed to
REPEATER
Figure 5.1 – Operating in USB 1.1 scheme
5.1.11.2 Connected to USB 2.0 Host/Hub
If an USB 2.0 hub is connected to an USB 2.0 host/hub, it will operate in USB 2.0 mode. The upstream port
signaling is in high speed with bandwidth of 480 Mbps under this environment. The traffic channel will
then be routed to the REPEATER when the device connected to the downstream port is signaling also in
high speed. On the other hand, the traffic channel will then be routed to TT when the device connected to
the downstream port is signaling in full/low speed.
相關(guān)PDF資料
PDF描述
GL850A-MNGXX USB 2.0 Low-Power HUB Controller
GL850A-MNNXX USB 2.0 Low-Power HUB Controller
GL850A-MSGXX USB 2.0 Low-Power HUB Controller
GL850A-MSNXX USB 2.0 Low-Power HUB Controller
GL850G USB 2.0 HUB Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
GL850A-MNGXX 制造商:GENESYS 制造商全稱:GENESYS 功能描述:USB 2.0 Low-Power HUB Controller
GL850A-MNNXX 制造商:GENESYS 制造商全稱:GENESYS 功能描述:USB 2.0 Low-Power HUB Controller
GL850A-MSGXX 制造商:GENESYS 制造商全稱:GENESYS 功能描述:USB 2.0 Low-Power HUB Controller
GL850A-MSNXX 制造商:GENESYS 制造商全稱:GENESYS 功能描述:USB 2.0 Low-Power HUB Controller
GL850G 制造商:GENESYS 制造商全稱:GENESYS 功能描述:USB 2.0 HUB Controller
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*