isp1521 NXP Semiconductors, isp1521 Datasheet - Page 27

• Manufacturer Part Number: isp1521
• Description: Hi-speed Universal Serial Bus Hub Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
11. Hub requests
Table 23.
ISP1521_4
Product data sheet
Request
Address
Set Address
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
Standard USB requests
11.1 Standard USB requests
Table 22.
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.
Table 23
Bit
D0, D1
D2
D3, D4
D5
D6
D7
bmRequestType
byte 0
(bits 7 to 0)
0000 0000
1000 0000
0000 0000
0000 0000
1000 0000
1000 0000
shows supported standard USB requests.
wHubCharacteristics bit description
Function
logical power switching mode
compound hub selection
overcurrent protection mode
-
-
port indicator
bRequest
byte 1
(hex)
05
08
09
09
06
06
06
06
06
06
Rev. 04 — 30 March 2006
wValue
bytes 2, 3
(hex)
device
address
00, 00
00, 00
01, 00
00, 02
00, 01
03, 00
03, 01
03, 02
03, 03
[1]
Value
00
01
10
11
0
1
00
01
10
11
-
-
0
1
wIndex
bytes 4, 5
(hex)
00, 00
00, 00
00, 00
00, 00
00, 00
00, 00
00, 00
00, 00
00, 00
00, 00
Description
ganged
individual and multiple ganged
none
-
non-compound
compound
global
individual and multiple ganged
none
-
-
-
global feature
-
wLength
bytes 6, 7
(hex)
00, 00
01, 00
00, 00
00, 00
length
length
length
length
length
length
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Hi-Speed USB hub controller
[2]
[2]
[2]
[2]
[2]
[2]
Data response
none
configuration value
none
none
configuration interface
and endpoint descriptors
device descriptor
language ID descriptor
manufacturer string
product string
serial number string
ISP1521
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