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參數(shù)資料
| 型號： | MC141555 |
| 廠商： | Motorola, Inc. |
| 英文描述： | USB Hub Controller CMOS |
| 中文描述： | USB集線器控制器的CMOS |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 280K |
| 代理商： | MC141555 |
MC141555
10
MOTOROLA
STATUS CHANGE REGISTER
The additional endpoint 1 of the Hub Controller supports interrupt transfer which reports the Hub and Port Status Change
Register, as shown in following table. This register contains only one byte.
Table 7. Status Change Register
REQUEST
The Hub Controller will respond to the HOST Request through the endpoint 0 pipe in the way as illustrated in following tables.
If the Hub responses with STALL packet, it means the request is not supported.
7
DeviceRemovable
1
00h/20h
00h: Indicate all the ports connected to this Hub are
removable.
02h: Indicate Port5 is dedicated to internal use and
permanent attached.
8
PortPwrCtrlMask
1
3Eh/
1Eh/
00h
Indicates all the ports connected to this Hub are not
affected by a Ganged-mode power request, Ports
always require SetPortFeature (PORT_POWER) to
control the port’s power state.
3Eh: 5 downstream ports are individual-controlled
1Eh: 4 downstream ports are individual-controlled
00h: all downstream ports are ganged-controlled
Bit
0
Function
Hub status change
Value
0
Description
No status change in Hub
1
Hub status change detected
1
Port 1 status change
0
1
No status change in Port 1
Port 1 status change detected
2
Port 2 status change
0
1
No status change in Port 2
Port 2 status change detected
3
Port 3 status change
0
1
No status change in Port 3
Port 3 status change detected
4
Port 4 status change
0
1
No status change in Port 4
Port 4 status change detected
5
Port 5 status change
0
1
No status change in Port 5
Port 5 status change detected
6-7
Reserved
00
Default values
Offset
Field
Size
Value
Description
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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