GL850 View Datasheet(PDF) - Genesys Logic
Part Name
Description
MFG CO.
'GL850' PDF : 40 Pages View PDF
GL850 USB 2.0 4-Port HUB Controller
5.4.1.8 Endpoint Descriptor combined with Other Speed Configuration Descriptor
Other Speed Endpoint Descriptor is in combination after Other Speed Interface Descriptor for the command
GET_DESCRIPTOR (OTHER_SPEED_CONFIGURATION).
Table 5.11 - Other Speed Endpoint Descriptor for Full Speed
Offset
Field
0 bLength
1 bDescriptorType
2 bEpointAddress
3 bAttribute
4 wMaxPacketSize
6 bInterval
Value
Description
07h 7bytes for this descriptor
05h Endpoint descriptor type
81h Address of the endpoint
03h Interrupt endpoint
0001h
Max. packet size of the
endpoint
0Ch
Polling interval =
(212-1) X 125 us
I/O
EEPROM
Configuration Configuration
-
-
-
-
-
-
-
-
-
-
-
-
5.4.1.9 String Descriptor
String Descriptor is replied for the command GET_DESCRIPTOR (STRING). Generally, one string
contains the information for manufacturer and the other contains the information for the product. These
strings can be configured in EERPOM. GL850 will read the data in the EEPROM to respond to the host.
The information in the following table are the default settings of Genesys Logic Inc.
Table 5.12 - String Index0 for Full Speed
Offset
Field
0 bLength
1 bDescriptorType
2 wLangid
Value
Description
04h 4 bytes for this descriptor
03h String descriptor type
0409 Language : English
I/O
EEPROM
Configuration Configuration
-
-
-
-
-
-
Table 5.13 - String Index1 for Full Speed
Offset
Field
0 bLength
1 bDescriptorType
2 bString
Value
Description
16h 16 bytes for this descriptor
03h String descriptor type
Unicode encoded manufacture
string-USB2.0 Hub as default
setting
I/O
EEPROM
Configuration Configuration
-
Y
-
Y
-
Y
©2000-2003 Genesys Logic Inc.—All rights reserved.
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