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參數資料
| 型號： | 82C862 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | FireLink USB Dual Controller Quad Port USB |
| 中文描述： | FireLink雙控制器的USB四口USB |
| 文件頁數： | 40/51頁 |
| 文件大小： | 321K |
| 代理商： | 82C862 |
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FireLink USB
82C862
912-2000-030
Revision: 1.0
Page 36
7
6
5
4
3
2
1
0
MEMOFST 55h
HcRhPort1Status Register - Byte 1
Default = 00h
Reserved
Read: Low
Speed Device
Attached(1)
0 = Full speed
device
1 = Low speed
device
Write: Clear
Port Power
0 = No effect
1 = Clears Port
Power
Status (bit
0)
Read: Port
Power Status(2)
0 = Port power
is off
1 = Port power
is on
Write: Set Port
Power
0 = No effect
1 = Sets Port
Power
Status
(1) Bit 1 defines the speed (and bus idle) of the attached device. It is only valid when Current Connect Status (MEMOFST 54h[0]) bit is set.
(2) Bit 0 reflects the power state of the port regardless of the power switching mode. If the No Power Switching (MEMOFST 49h[1]) bit is set,
bit 0 is always read as 1.
MEMOFST 56h
HcRhPort1Status Register - Byte 2
Default = 00h
Reserved
Port Reset
Status Change
0 = Port reset is
not
complete
1 = Port reset is
complete
Port Over-
current
Indicator
Change
This bit is set
when the Over-
current
Indicator
(MEMOFST
50h[1]) bit
changes.
Write 1 to clear
Port Suspend
Status Change
Indicates the
completion of
the selective
resume
sequence for
the port.
0 = Port is not
resumed
1 = Port resume
is complete
Port Enable
Status Change
Indicates that
the port has
been disabled
due to a
hardware event
(cleared Port
Enable Status,
MEMOFST
54h[1]).
0 = Port has not
been
disabled
1 = Port Enable
Status has
been
cleared
Connect Status
Change
Indicates a
connect or
disconnect
event has been
detected.
0 = No
connect/dis
connect
event
1 = Hardware
detection of
connect/dis
connect
event(1)
Write 1 to clear
(1) If the Device Removable Bits (MEMOFST 4Ch[15:1]) are set, bit 0 resets to 1.
MEMOFST 57h
HcRhPort1Status Register - Byte 3
Default = 00h
Reserved
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