sc3200 Advanced Micro Devices, sc3200 Datasheet - Page 309
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sc3200
Manufacturer Part Number
sc3200
Description
Geode-tm Sc3200 Processor
Manufacturer
Advanced Micro Devices
Datasheet
1.SC3200.pdf
(447 pages)
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Core Logic Module - USB Controller Registers - PCIUSB
AMD Geode™ SC3200 Processor Data Book
Note:
Offset 58h-5Bh
31:21
15:10
Bit
7:5
20
19
18
17
16
1
0
9
8
4
This register is reset by the UsbReset state.
Description
Read: PortEnableStatus.
0: Port disabled.
1: Port enabled.
Write: SetPortEnable. Writing a 1 sets PortEnableStatus. Writing a 0 has no effect.
Read: CurrentConnectStatus.
0: No device connected.
1: Device connected.
If DeviceRemoveable is set (not removable) this bit is always 1.
Write: ClearPortEnable. Writing 1 a clears PortEnableStatus. Writing a 0 has no effect.
Reserved. Read/Write 0s.
PortResetStatusChange. This bit indicates that the port reset signal has completed.
0: Port reset is not complete.
1: Port reset is complete.
PortOverCurrentIndicatorChange. This bit is set when OverCurrentIndicator changes. Writing a 1 clears this bit. Writing
a 0 has no effect.
PortSuspendStatusChange. This bit indicates the completion of the selective resume sequence for the port.
0: Port is not resumed.
1: Port resume is complete.
PortEnableStatusChange. This bit indicates that the port has been disabled due to a hardware event (cleared PortEna-
bleStatus).
0: Port has not been disabled.
1: PortEnableStatus has been cleared.
ConnectStatusChange. This bit indicates a connect or disconnect event has been detected. Writing a 1 clears this bit.
Writing a 0 has no effect.
0: No connect/disconnect event.
1: Hardware detection of connect/disconnect event.
If DeviceRemoveable is set, this bit resets to 1.
Reserved. Read/Write 0s.
Read: LowSpeedDeviceAttached. This bit defines the speed (and bud idle) of the attached device. It is only valid when
CurrentConnectStatus is set.
0: Full speed device.
1: Low speed device.
Write: ClearPortPower. Writing a 1 clears PortPowerStatus. Writing a 0 has no effect.
Read: PortPowerStatus. This bit reflects the power state of the port regardless of the power switching mode.
0: Port power is off.
1: Port power is on.
If NoPowerSwitching is set, this bit is always read as 1.
Write: SetPortPower. Writing a 1 sets PortPowerStatus. Writing a 0 has no effect.
Reserved. Read/Write 0s.
Read: PortResetStatus.
0: Port reset signal is not active.
1: Port reset signal is active.
Write: SetPortReset. Writing a 1 sets PortResetStatus. Writing a 0 has no effect.
Table 6-42. USB_BAR+Memory Offset: USB Controller Registers (Continued)
HcRhPortStatus[2] Register (R/W)
Revision 5.1
Reset Value = 00000000h
309
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