HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 831
HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417320.pdf
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Bit
9
8
7
6
Bit Name
RWC
IR
HCFS1
HCFS0
Initial
Value
0
0
0
0
R/W
R/W
R/W
R/W
R/W
Description
Remote Wakeup Connected
This bit indicates whether the host controller supports a
remote wakeup signal or not. When the remote wakeup is
supported and used in the system, the host controller must
set this bit between POST in the system firmware. The
host controller clears the bit at the same time of the
hardware reset, however, does not change at the same
time as the software reset.
This function is not supported. Be sure to write 0.
Interrupt Routing
This bit determines the routing of interrupts generated by
the event registered in USBHIS. HCD clears this bit at the
same time as the hardware reset, however, does not clear
at the same time as the software reset. HCD uses this bit
as a tag to indicate the ownership of the host controller.
0: All interrupts are routed to normal host bus interrupt
1: Interrupts are routed to SMI
Host Controller Functional State
HCD determines whether the host controller has started to
route SOF after having read the SF bit of USBHIS. This bit
can be changed by the host controller only in the
UsbSuspend state. The host controller can move from the
UsbSuspend state to the UsbResume state after having
detected the resume signal from the downstream port. In
the host controller, UsbSuspend is entered after the
software reset so that UsbReset is entered after the
hardware reset. The former resets the route hub.
00: USB Reset
01: USB Resume
10: USB Operational
11: USB Suspend
mechanism
Rev. 3.00 Jan. 18, 2008 Page 769 of 1458
Section 24
USB Host Controller (USBH)
REJ09B0033-0300
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