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ISP1122A Datasheet PDF : 48 Pages
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Philips Semiconductors
ISP1122A
USB stand-alone hub
Table 7: Standard USB requests…continued
Request name
bmRequestType bRequest
byte 0 [7:0]
byte 1
(Bin)
(Hex)
Feature
Clear Device Feature
X000 0000
01
(REMOTE_WAKEUP)
Clear Endpoint (1)
X000 0010
01
Feature (HALT/STALL)
Set Device Feature
X000 0000
03
(REMOTE_WAKEUP)
Set Endpoint (1)
X000 0010
03
Feature (HALT/STALL)
Status
Get Device Status
1000 0000
00
Get Interface Status
1000 0001
00
Get Endpoint (0) Status 1000 0010
00
wValue
byte 2, 3
(Hex)
01, 00
00, 00
01, 00
00, 00
00, 00
00, 00
00, 00
wIndex
byte 4, 5
(Hex)
wLength
byte 6, 7
(Hex)
00, 00
81, 00
00, 00
81, 00
00, 00
00, 00
00, 00
00, 00
00, 00
00, 00
00/80 [3], 00
02, 00
02, 00
02, 00
Get Endpoint (1) Status 1000 0010
00
00, 00
81, 00
02, 00
Unsupported
Set Descriptor
0000 0000
07
XX, XX
XX, XX
XX, XX
Get Interface
Set Interface
Synch Frame
1000 0001
0A
X000 0001
0B
1000 0010
0C
00, 00
XX, XX
00, 00
XX, XX
XX, XX
XX, XX
[1] Device address: 0 to 127.
[2] Returned value in bytes.
[3] MSB specifies endpoint direction: 0 = OUT, 1 = IN. The ISP1122A accepts either value.
01, 00
00, 00
02, 00
Data
none
none
none
none
device status
zero
endpoint 0
status
endpoint 1
status
descriptor;
STALL
STALL
STALL
STALL
9.2 Hub specific requests
In Table 8 the supported hub specific requests are listed, as well as some
unsupported requests. Table 9 provides the feature selectors for setting or clearing
port features.
Table 8: Hub specific requests
Request name
bmRequestType
byte 0 [7:0]
(Bin)
Descriptor
Get Hub Descriptor
1010 0000
Feature
Clear Hub Feature
(C_LOCAL_POWER)
X010 0000
Clear Port Feature
(feature selectors)
X010 0011
Set Port Feature
(feature selectors)
X010 0011
bRequest
byte 1
(Hex)
06
01
01
03
wValue
byte 2, 3
(Hex)
wIndex
byte 4, 5
(Hex)
00, 00/29 [1] 00, 00
00, 00
00, 00
feature [3], 00 port [4], 00
feature [3], 00 port [4], 00
wLength
byte 6, 7
(Hex)
Data
length [2], 00 hub descriptor
00, 00
00, 00
00, 00
none
none
none
9397 750 06986
Preliminary specification
Rev. 01 — 27 March 2000
© Philips Electronics N.V. 2000. All rights reserved.
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