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參數(shù)資料
| 型號： | AT43USB326-AU |
| 廠商： | Atmel Corp. |
| 英文描述： | Multimedia USB Keyboard Controller with Embedded Hub |
| 中文描述： | 多媒體USB鍵盤控制器的嵌入式集線器 |
| 文件頁數(shù)： | 69/102頁 |
| 文件大小： | 511K |
| 代理商： | AT43USB326-AU |
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69
AT43USB326
3313D–USB–04/06
Set and cleared by the hardware as controlled through Port Control register.
Bit 0 – PCSTAT: Port Connect Status
0 = No device on this port
1 = Device present on this port
Set to 1 for Port 1. Set and cleared by the hardware after sampling of connect status at EOF2.
Overcurrent Detect Register – UOVCER
Bit 7..3
–
Reserved
These bits are reserved in the AT43USB326 and will read as zero.
Bit 2
–
PORT 2
Setting this bit enables the hub to detect an overcurrent on Port 2 while the hub is in the sus-
pend state.
Bit 1, 0
–
Reserved
These bits are reserved in the AT43USB326 and will read as zero.
Hub Port State Register – HPSTAT2, 3
These registers contain the state of the ports’ DP and DM pins, which will be sent to the host
upon receipt of a GetBusState request.
Bit 7..2
–
Reserved
These bits are reserved in the AT43USB326 and will read as zero.
Bit 1
–
DPSTATE: DPlus State
Value of DP at last EOF. Set and cleared by hardware at EOF2.
Set to 1 for Port 1.
Bit 0
–
DMSTATE: DMinus State
Value of DM at last EOF. Set and cleared by hardware at EOF2.
Set to 0 for Port 1.
Bit
7
6
5
4
3
2
1
0
$1FF2
–
–
–
–
–
PORT2
–
–
UOVCER
Read/Write
R
R
R
R
R
R/W
R
R
Initial Value
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
Port2 $1FA9
–
–
–
–
–
–
DPSTATE
DMSTATE
PSTATE2
Port3 $1FAA
–
–
–
–
–
–
DPSTATE
DMSTATE
PSTATE3
Read/Write
R
R
R
R
R
R
R
R
Initial Value
0
0
0
0
0
0
0
0
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