isp1122 NXP Semiconductors, isp1122 Datasheet - Page 14

• Manufacturer Part Number: isp1122
• Description: Isp1122 Universal Serial Bus Stand-alone Hub
• Manufacturer: NXP Semiconductors

Table 8:
[1]
[2]
[3]
[4]
Philips Semiconductors
9397 750 07002
Product specification
Request name
Status
Get Hub Status
Get Port Status
Unsupported
Get Bus Status
Clear Hub Feature
(C_OVER_CURRENT)
Set Hub Descriptor
Set Hub Feature
(C_LOCAL_POWER)
Set Hub Feature
(C_OVER_CURRENT)
USB Specification Rev. 1.0 uses 00H, USB Specification Rev. 1.1 specifies 29H.
Returned value in bytes.
Feature selector value, see
Downstream port identifier: 1 to N with N = number of enabled ports (2 to 5).
Hub specific requests
bmRequestType
byte 0 [7:0]
(Bin)
1010 0000
1010 0011
1010 0011
X010 0000
0010 0000
X010 0000
X010 0000
Table
Table 9:
Feature selector name
PORT_CONNECTION
PORT_ENABLE
PORT_SUSPEND
PORT_OVERCURRENT
PORT_RESET
PORT_POWER
PORT_LOW_SPEED
C_PORT_CONNECTION
C_PORT_ENABLE
C_PORT_SUSPEND
C_PORT_OVERCURRENT
C_PORT_RESET
…continued
9.
Port feature selectors
bRequest
byte 1
(Hex)
00
00
02
01
07
03
03
Rev. 03 — 29 March 2000
Value (Hex)
00
01
02
03
04
08
09
10
11
12
13
14
wValue
byte 2, 3
(Hex)
00, 00
00, 00
00, 00
01, 00
XX, XX
00, 00
01, 00
Set feature
not used
not used
suspends a port
not used
resets and enables a
port
powers on a port
not used
not used
not used
not used
not used
not used
wIndex
byte 4, 5
(Hex)
00, 00
port
port
00, 00
00, 00
00, 00
00, 00
[4]
[4]
, 00
, 00
wLength
byte 6, 7
(Hex)
04, 00
04, 00
01, 00
00, 00
3E, 00
00, 00
00, 00
USB stand-alone hub
Clear feature
not used
disables a port
resumes a port
not used
not used
powers off a port
not used
clears port connection
change bit
clears port enable
change bit
clears port suspend
change bit
clears port overcurrent
change bit
clears port reset
change bit
© Philips Electronics N.V. 2000. All rights reserved.
ISP1122
Data
hub status and
status change
field
port status
STALL
STALL
STALL
STALL
STALL
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