參數(shù)資料
型號: ISP1122AD
廠商: NXP SEMICONDUCTORS
元件分類: 總線控制器
英文描述: Universal Serial Bus stand-alone hub
中文描述: UNIVERSAL SERIAL BUS CONTROLLER, PDSO32
封裝: 7.50 MM, PLASTIC, SO-48
文件頁數(shù): 13/48頁
文件大?。?/td> 1150K
代理商: ISP1122AD
Philips Semiconductors
ISP1122A
USB stand-alone hub
Preliminary specification
Rev. 01 — 27 March 2000
13 of 48
9397 750 06986
Philips Electronics N.V. 2000. All rights reserved.
[1]
[2]
[3]
Device address: 0 to 127.
Returned value in bytes.
MSB specifies endpoint direction: 0 = OUT, 1 = IN. The ISP1122A accepts either value.
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.
Feature
Clear Device Feature
(REMOTE_WAKEUP)
Clear Endpoint (1)
Feature (HALT/STALL)
Set Device Feature
(REMOTE_WAKEUP)
Set Endpoint (1)
Feature (HALT/STALL)
Status
Get Device Status
Get Interface Status
Get Endpoint (0) Status
X000 0000
01
01, 00
00, 00
00, 00
none
X000 0010
01
00, 00
81, 00
00, 00
none
X000 0000
03
01, 00
00, 00
00, 00
none
X000 0010
03
00, 00
81, 00
00, 00
none
1000 0000
1000 0001
1000 0010
00
00
00
00, 00
00, 00
00, 00
00, 00
00, 00
00/80
[3]
, 00
02, 00
02, 00
02, 00
device status
zero
endpoint 0
status
endpoint 1
status
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
descriptor;
STALL
STALL
STALL
STALL
Get Interface
Set Interface
Synch Frame
1000 0001
X000 0001
1000 0010
0A
0B
0C
00, 00
XX, XX
00, 00
XX, XX
XX, XX
XX, XX
01, 00
00, 00
02, 00
Table 7:
Request name
Standard USB requests
…continued
bmRequestType
byte 0 [7:0]
(Bin)
bRequest
byte 1
(Hex)
wValue
byte 2, 3
(Hex)
wIndex
byte 4, 5
(Hex)
wLength
byte 6, 7
(Hex)
Data
Table 8:
Request name
Hub specific requests
bmRequestType
byte 0 [7:0]
(Bin)
bRequest
byte 1
(Hex)
wValue
byte 2, 3
(Hex)
wIndex
byte 4, 5
(Hex)
wLength
byte 6, 7
(Hex)
Data
Descriptor
Get Hub Descriptor
Feature
Clear Hub Feature
(C_LOCAL_POWER)
Clear Port Feature
(feature selectors)
Set Port Feature
(feature selectors)
1010 0000
06
00, 00/29
[1]
00, 00
length
[2]
, 00
hub descriptor
X010 0000
01
00, 00
00, 00
00, 00
none
X010 0011
01
feature
[3]
, 00
port
[4]
, 00
00, 00
none
X010 0011
03
feature
[3]
, 00
port
[4]
, 00
00, 00
none
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