参数资料
型号: ISP1520BD,557
厂商: NXP SEMICONDUCTORS
元件分类: 总线控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP64
封装: 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64
文件页数: 19/54页
文件大小: 288K
代理商: ISP1520BD,557
ISP1520_4
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 04 — 28 April 2006
25 of 53
Philips Semiconductors
ISP1520
Hi-Speed USB hub controller
11. 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 specic.
11.1 Standard USB requests
Table 23 shows supported standard USB requests.
Table 22.
wHubCharacteristics bit description
Bit
Function
Value Description
D0, D1
logical power switching mode
00
ganged
01
individual and multiple ganged
11
-
D2
compound hub selection
0
non-compound
1
compound
D3, D4
overcurrent protection mode
00
global
01
individual and multiple ganged
10
none
11
-
D5
-
D6
-
D7
port indicator
0
global feature
1-
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
none
Conguration
Get Conguration
1000 0000
08
00, 00
01, 00
conguration value
Set Conguration (0)
0000 0000
09
00, 00
none
Set Conguration (1)
0000 0000
09
01, 00
00, 00
none
Descriptors
Get Conguration
Descriptor
1000 0000
06
00, 02
00, 00
length[2]
conguration interface
and endpoint descriptors
Get Device Descriptor
1000 0000
06
00, 01
00, 00
length[2]
device descriptor
Get String Descriptor (0) 1000 0000
06
03, 00
00, 00
length[2]
language ID descriptor
Get String Descriptor (1) 1000 0000
06
03, 01
00, 00
length[2]
manufacturer string
Get String Descriptor (2) 1000 0000
06
03, 02
00, 00
length[2]
product string
Get String Descriptor (3) 1000 0000
06
03, 03
00, 00
length[2]
serial number string
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