Chipset Configuration Registers
412 Datasheet
10.1.82 RMHWKCTL—Rate Matching Hub Wake Control Register
Offset Address: 35B0–35B3h Attribute: R/W
Default Value: 00000000h Size: 32-bit
All bits in this register are in the Resume Well and is only cleared by RSMRST#.
Bit Description
31:10 Reserved
9
RMH 2 Inherit EHCI2 Wake Control Settings: When this bit is set, the RMH
behaves as if bits 6:4 of this register reflect the appropriate bits of EHCI PORTSC0
bits 22:20.
8
RMH 1 Inherit EHCI1 Wake Control Settings: When this bit is set, the RMH
behaves as if bits 2:0 of this register reflect the appropriate bits of EHCI PORTSC0
bits 22:20.
7
RMH 2 Upstream Wake on Device Resume This bit governs the hub behavior
when globally suspended and the system is in Sx.
0 = Enables the port to be sensitive to device initiated resume events as system
wake-up events; that is, the hub will initiate a resume on its upstream port and
cause a wake from Sx when a device resume occurs on an enabled DS port
1 = Device resume event is seen on a downstream port, the hub does not initiate a
wake upstream and does not cause a wake from Sx
6
RMH 2 Upstream Wake on OC Disable This bit governs the hub behavior when
globally suspended and the system is in Sx.
0 = Enables the port to be sensitive to over-current conditions as system wake-up
events; that is, the hub will initiate a resume on its upstream port and cause a
wake from Sx when an OC condition occurs on an enabled DS port
1 = Over-current event does not initiate a wake upstream and does not cause a wake
from Sx
5
RMH 2 Upstream Wake on Disconnect Disable This bit governs the hub behavior
when globally suspended and the system is in Sx
0 = Enables disconnect events on downstream port to be treated as resume events
to be propagated upstream. In this case, it is allowed to initiate a wake on its
upstream port and cause a system wake from Sx in response to a disconnect
event on a downstream port
1 = Downstream disconnect events do not initiate a resume on its upstream port or
cause a resume from Sx.
4
RMH 2 Upstream Wake on Connect Enable This bit governs the hub behavior
when globally suspended and the system is in Sx.
0 = Enables connect events on a downstream port to be treated as resume events to
be propagated upstream. As well as waking up the system from Sx.
1 = Downstream connect events do not wake the system from Sx nor does it initiate
a resume on its upstream port.
3
RMH 1 Upstream Wake on Device Resume This bit governs the hub behavior
when globally suspended and the system is in Sx.
0 = Enables the port to be sensitive to device initiated resume events as system
wake-up events; that is, the hub will initiate a resume on its upstream port and
cause a wake from Sx when a device resume occurs on an enabled DS port
1 = Device resume event is seen on a downstream port, the hub does not initiate a
wake upstream and does not cause a wake from Sx
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