參數資料
型號: ISP1521
廠商: NXP Semiconductors N.V.
英文描述: Hi-Speed Universal Serial Bus hub controller
中文描述: 高速通用串行總線控制器樞紐
文件頁數: 28/53頁
文件大?。?/td> 270K
代理商: ISP1521
Philips Semiconductors
ISP1521
Hi-Speed USB hub controller
Product data
Rev. 03 — 24 November 2004
28 of 53
9397 750 13702
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
12. Hub requests
The hub must react to a variety of requests initiated by the host. Some requests are
standard and are implemented by any USB device whereas others are hub-class
specific requests.
12.1 Standard USB requests
Table 23
shows the supported standard USB requests.
Table 22:
Bit
D0, D1
wHubCharacteristics bit description
Function
logical power switching mode
Value
00
01
10
11
0
1
00
01
10
11
-
-
0
1
Description
ganged
individual and multiple ganged
none
-
non-compound
compound
global
individual and multiple ganged
none
-
-
-
global feature
-
D2
compound hub selection
D3, D4
overcurrent protection mode
D5
D6
D7
-
-
port indicator
Table 23:
Standard USB requests
Request
bmRequestType
byte 0
(bits 7 to 0)
bRequest
byte 1
(hex)
wValue
bytes 2, 3
(hex)
wIndex
bytes 4, 5
(hex)
wLength
bytes 6, 7
(hex)
Data response
Address
Set Address
0000 0000
05
device
address
[1]
00, 00
00, 00
none
Configuration
Get Configuration
Set Configuration (0)
Set Configuration (1)
Descriptors
Get Configuration
Descriptor
Get Device Descriptor
Get String Descriptor (0) 1000 0000
Get String Descriptor (1) 1000 0000
Get String Descriptor (2) 1000 0000
Get String Descriptor (3) 1000 0000
1000 0000
0000 0000
0000 0000
08
09
09
00, 00
00, 00
01, 00
00, 00
00, 00
00, 00
01, 00
00, 00
00, 00
configuration value
none
none
1000 0000
06
00, 02
00, 00
length
[2]
configuration interface
and endpoint descriptors
device descriptor
language ID descriptor
manufacturer string
product string
serial number string
1000 0000
06
06
06
06
06
00, 01
03, 00
03, 01
03, 02
03, 03
00, 00
00, 00
00, 00
00, 00
00, 00
length
[2]
length
[2]
length
[2]
length
[2]
length
[2]
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