gl850 ETC-unknow, gl850 Datasheet - Page 24

• Manufacturer Part Number: gl850
• Description: Usb 2.0 4-port Hub Controller
• Manufacturer: ETC-unknow

5.3.1 Host Commands and Hub Answers
5.3.1.1 Standard Requests
©2000-2003 Genesys Logic Inc.—All rights reserved.
GET_DESCRIPTOR
(Device)
GET_DESCRIPTOR
(Device_Qualifier)
GET_DESCRIPTOR
(Configuration)
GET_DESCRIPTOR
(Other_Speed_Configur
ation)
GET_DESCRIPTOR
(String Index0)
GET_DESCRIPTOR
(String Index1)
GET_DESCRIPTOR
(String Index2)
SET_ADDRESS
SET_CONFIGURATIO
N
GET_CONFIGURATI
ON
SET_INTERFACE
SET_FEATURE
(Remote wakeup
ability)
SET_FEATURE
(Endpoint0 halt)
no support
SET_FEATURE
(Endpoint1 halt)
CLEAR_FEATURE
(Remote wakeup
ability)
CLEAR_FEATURE
(Endpoint0 halt)
no support
An USB hub needs at least 2 endpoints to guarantee the normal operation. Endpoint 0 is the default control
pipe. Endpoint 1 is the interrupt pipe.
Host gets all the information about the hub and through the control pipe. Hub information like self/bus
power and gang/individual mode is all replied to host via endpoint0. Interrupt pipe is to report to the host
the updated change of hub status (power change and over current change, for example) and the updated
status change of all downstream ports (connect change, suspend change, over current change, etc.).
Request
bmRequestType
10000000b
10000000b
10000000b
10000000b
10000000h
10000000h
10000000h
00000000b
00000000b
00000000b
00000001b
00000000b
00000010b
00000010b
00000000b
00000010b
Table 5.2 - Standard Request List
bRequest wValue wIndex wLength
0Bh
06h
06h
06h
06h
06h
06h
06h
05h
09h
08h
03h
03h
03h
01h
01h
0000h ~
0000h/
0100h
0600h
0200h
0700h
0300h
0301h
0302h
007Fh
0001h
0000h
0000h
0001h
0000h
0000h
0001h
0000h
GL850 USB 2.0 4-Port HUB Controller
0000h/
0000h/
0000h
0000h
0000h
0000h
0000h
0409h
0409h
0000h
0000h
0000h
0000h
0000h
0080h
0081h
0000h
0080h
000Ah
002Ch
0000h
0000h
0000h
0012h
0019h
0019h
0004h
0020h
0000h
0000h
0001h
0000h
0000h
0000h
Device Descriptor
(Note1)
Device_Qualifier
Descriptor (Note1)
Configuration+Interface+
Endpoint Descriptors
(Note1)
Other_Speed_
Configuration+Interface+
Endpoint Descriptors
(Note1)
String Descriptor Index0
(Note1)
String Descriptor Index1
(Note1)
String Descriptor Index2
(Note1)
Zero length packet
Zero length packet
Configuration value
Zero length packet
Zero length packet
Zero length packet
Zero length packet
Zero length packet
Zero length packet
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