ISP1160BM/01 STEricsson, ISP1160BM/01 Datasheet - Page 51

• Manufacturer Part Number: ISP1160BM/01
• Manufacturer: STEricsson

Specifications of ISP1160BM/01

• Lead Free Status / RoHS Status: Supplier Unconfirmed

ISP1160-01_7
Product data sheet
10.3.4 HcRhPortStatus[1:2] (R/W [1]:15H/95H, [2]: 16H/96H)
Table 33.
The HcRhPortStatus[1:2] register is used to control and report port events on a per-port
basis. NumberDownstreamPorts represents the number of HcRhPortStatus registers that
are implemented in hardware. The lower word is used to reflect the port status, whereas
the upper word reflects the status change bits. Some status bits are implemented with
special write behavior. If a transaction (token through handshake) is in progress when a
write to change port status occurs, the resulting port status change must be postponed
until the transaction completes. Reserved bits should always be written logic 0.
Code (Hex): [1] = 15, [2] = 16 — read
Code (Hex): [1] = 95, [2] = 96 — write
Bit
31
30 to 18
17
16
15
14 to 2
1
0
HcRhStatus register: bit description
Symbol
CRWE
-
OCIC
LPSC
DRWE
-
OCI
LPS
Rev. 07 — 29 September 2009
Description
On write—ClearRemoteWakeupEnable: Writing a logic 1 clears
DeviceRemoveWakeupEnable. Writing a logic 0 has no effect.
reserved
OverCurrentIndicatorChange: This bit is set by hardware when a
change has occurred to the OCI field of this register. The HCD clears
this bit by writing a logic 1. Writing a logic 0 has no effect.
On read—LocalPowerStatusChange: The Root Hub does not
support the local power status feature. Therefore, this bit is always
read as logic 0.
On write—SetGlobalPower: In global power mode
(PowerSwitchingMode = 0), this bit is written to logic 1 to turn on
power to all ports (clear PortPowerStatus). In per-port power mode, it
sets PortPowerStatus only on ports whose bit PortPowerControlMask
is not set. Writing a logic 0 has no effect.
On read—DeviceRemoteWakeupEnable: This bit enables the bit
ConnectStatusChange as a resume event, causing a state transition
USBSuspend to USBResume and setting the ResumeDetected
interrupt.
0 — ConnectStatusChange is not a remote wake-up event
1 — ConnectStatusChange is a remote wake-up event
On write—SetRemoteWakeupEnable: Writing a logic 1 sets
DeviceRemoveWakeupEnable. Writing a logic 0 has no effect.
reserved
OverCurrentIndicator: This bit reports overcurrent conditions when
global reporting is implemented. When set, an overcurrent condition
exists. When clear, all power operations are normal. If per-port
overcurrent protection is implemented this bit is always logic 0.
On read—LocalPowerStatus: The Root Hub does not support the
local power status feature. Therefore, this bit is always read as logic 0.
On write—ClearGlobalPower: In global power mode
(PowerSwitchingMode = 0), this bit is written to logic 1 to turn off
power to all ports (clear PortPowerStatus). In per-port power mode, it
clears PortPowerStatus only on ports whose
bit PortPowerControlMask is not set. Writing a logic 0 has no effect.
Embedded USB host controller
ISP1160/01
© ST-ERICSSON 2009. All rights reserved.
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