SH7727 Datasheet, PDF (825/1109 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

Section 24 USB HOST Module
Register: HcRhPortStatus[1:2]
Bits
Reset R/W
16
0
R/W
15–10 0h
—
9
0
R/W
Offset: 54–57, 58–5B
Description
ConnectStatusChange (CSC)
This bit is set whenever the connection or disconnection event
occurs. Writing a 1 clears this bit. Writing a 0 has no effect. If
CurrentConnectStatus is cleared when SetPortReset,
SetPortEnable, or SetPortSuspend is written to, writing when
the power supply of the port is disconnected does not occur, so
this bit is set to enforce the driver to re-evaluate the connection
status.
0: CurrentConnectionStatus has not changed (initial value)
1: CurrentConnectionStatus has changed
Note: If the Device Removable bit is set, this bit is set only
after the root hub reset to inform that the system that a
device can be attached.
Reserved.
(read) LowSpeedDeviceAttached (LSDA)
This bit indicates the speed of the device attached to this port.
When this bit is set, a low-seed device is attached to this port.
When this bit is cleared, a full-speed device is attached to this
port. This bit is valid only when the CurrentConnectStatus bit is
set.
0: A full-speed device is set. (initial value)
1: A low-speed device is set.
(write) ClearPortPower
Writing a 1 clears PortPowerStatus. Writing a 0 has no effect
Rev. 5.00 Dec 12, 2005 page 753 of 1034
REJ09B0254-0500