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參數(shù)資料
| 型號(hào)： | GL852 |
| 廠商： | Genesys Logic, Inc. |
| 英文描述： | USB 2.0 MTT HUB Controller |
| 中文描述： | MTT法的USB 2.0集線器控制器 |
| 文件頁(yè)數(shù)： | 19/31頁(yè) |
| 文件大?。?/td> | 516K |
| 代理商： | GL852 |
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GL852 USB 2.0 MTT HUB Controller
2000-2007 Genesys Logic Inc. - All rights reserved.
Page 19
Figure 5.3 - RESET# (External Reset) setting and application
GL852 internally contains a power on reset circuit. The power on sequence is depicted in the next picture.
To fully control the reset process of GL852, we suggest the reset time applied in the external reset circuit
should longer than that of the internal reset circuit.
≒
2.7
μ
s
Internal reset
External reset
Power good voltage, 2.5~2.8V
VCC(3.3V)
Figure 5.4 - Power on sequence of GL852
5.2.2 PGANG/SUSPND Setting
To save pin count, GL852 uses the same pin to decide individual/gang mode as well as to output the
suspend flag. The individual/gang mode is decided within 20us after power on reset. Then, about 50ms later,
this pin is changed to output mode. GL852 outputs the suspend flag once it is globally suspended. For
individual mode, a pull low resister greater than 100K
should be placed. For gang mode, a pull high
resister which greater than 100K
should be placed. In figure 5.6, we also depict the suspend LED
indicator schematics. It should be noticed that the polarity of LED must be followed, otherwise the suspend
current will be over spec limitation (2.5mA).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| GL852-MNGXX | USB 2.0 MTT HUB Controller |
| GL852-MNNXX | USB 2.0 MTT HUB Controller |
| GL860A | USB 2.0 UVC Camera Controller |
| GL860A-MNGXX | USB 2.0 UVC Camera Controller |
| GL860A-PMGXX | USB 2.0 UVC Camera Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GL852-MNGXX | 制造商:GENESYS 制造商全稱(chēng):GENESYS 功能描述:USB 2.0 MTT HUB Controller |
| GL852-MNNXX | 制造商:GENESYS 制造商全稱(chēng):GENESYS 功能描述:USB 2.0 MTT HUB Controller |
| GL852-MSGXX | 制造商:GENESYS 制造商全稱(chēng):GENESYS 功能描述:USB 2.0 MTT HUB Controller |
| GL852-MSNXX | 制造商:GENESYS 制造商全稱(chēng):GENESYS 功能描述:USB 2.0 MTT HUB Controller |
| GL852-ONGXX | 制造商:GENESYS 制造商全稱(chēng):GENESYS 功能描述:USB 2.0 MTT HUB Controller |
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