ISP1161A1BMUM Datasheet, PDF (65/137 Pages) List of Unclassifed Manufacturers – As from August 2nd 2008, the wireless operations of NXP have moved to a new company, ST-NXP Wireless

Philips Semiconductors
ISP1161A1
USB single-chip host and device controller
Table 35:
Bit
2
HcRhPortStatus[1:2] register: bit description…continued
Symbol Description
PSS
(read) PortSuspendStatus: This bit indicates whether the port is
suspended or in the resume sequence. It is set by a
SetSuspendState write and cleared when
PortSuspendStatusChange is set at the end of the resume
interval. This bit cannot be set if CurrentConnectStatus is cleared.
This bit is also cleared when PortResetStatusChange is set at the
end of the port reset or when the HC is placed in the USBResume
state. If an upstream resume is in progress, it is propagated to
the HC.
0 — port is not suspended
1 — port is suspended
(write) SetPortSuspend: The HCD sets bit PortSuspendStatus by
writing a logic 1 to this bit. Writing a logic 0 has no effect. If
CurrentConnectStatus is cleared, this write action does not set
PortSuspendStatus; instead it sets ConnectStatusChange. This
informs the driver that it attempted to suspend a disconnected
port.
1
PES
(read) PortEnableStatus: This bit indicates whether the port is
enabled or disabled. The Root Hub can clear this bit when an
overcurrent condition, disconnect event, switched-off power, or
operational bus error such as babble is detected. This change also
causes PortEnableStatusChange to be set. The HCD sets this bit
by writing SetPortEnable and clears it by writing ClearPortEnable.
This bit cannot be set when CurrentConnectStatus is cleared. This
bit is also set at the completion of a port reset when
ResetStatusChange is set or port is suspended when
SuspendStatusChange is set.
0 — port is disabled
1 — port is enabled
(write) SetPortEnable: The HCD sets PortEnableStatus by writing
a logic 1. Writing a logic 0 has no effect. If CurrentConnectStatus
is cleared, this write does not set PortEnableStatus, but instead
sets ConnectStatusChange. This informs the driver that it
attempted to enable a disconnected port.
0
CCS
(read) CurrentConnectStatus: This bit reflects the current state
of the downstream port.
0 — no device connected
1 — device connected
(write) ClearPortEnable: The HCD writes a logic 1 to this bit to
clear bit PortEnableStatus. Writing a logic 0 has no effect.
CurrentConnectStatus is not affected by any write.
Remark: This bit always reads logic 1 when the attached device is
nonremovable (DeviceRemovable[NDP]).
9397 750 13961
Product data
Rev. 03 — 23 December 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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