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GL850 Datasheet(PDF) 37 Page - List of Unclassifed Manufacturers

Part # GL850
Description  USB 2.0 4-PORT HUB Controller
PDF  40 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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GL850 Datasheet(HTML) 37 Page - List of Unclassifed Manufacturers

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GL850 USB 2.0 4-Port HUB Controller
©2000-2003 Genesys Logic Inc.—All rights reserved.
Page 37
5.4.3 Hub Class Descriptor
Hub Class Descriptor is replied to the host for the GET_DESCRIPTOR (HUB) command. There’s no
difference in the content for full speed and high speed.
Table 5.26 - Hub Class Descriptor
Offset
Field
Value
Description
I/O
Configuration
EEPROM
Configuration
0
bLength
09h
9 bytes for this descriptor
-
-
1
bDescriptorType
29h
Hub descriptor type
-
-
2
bNbrPorts
04h
Number of ports
-
-
4
wHubCharacteristics
89h
80h
Individual mode
Gang mode
Y
-
5
bPwrOn2PwrGood
32h
Time from power on to
power good (2 ms)
-
-
6
bHubContrCurrent
64h
Maximum current (mA)
-
-
7
bDeviceRemoveable
00h
All devices are removable
-
-
8
bPortPwrCtrlMask
FFh
For compatible to USB1.0
-
-



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