HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 838
HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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Section 24
24.3.5
Each enable bit in USBHIE corresponds to the related interrupt bit in USBHIS. USBHIE is used to
control an event to generate a hardware interrupt. A hardware interrupt is requested to the CPU
when a bit in USBHIE is set, a corresponding bit in USBHIE is set, and the MIE bit is set. As a
result, the USBHI bit in the interrupt request register 9 (IRR9) of the interrupt controller (INTC) is
set (the USBHI bit is used in common regardless of the content of the interrupt generation event).
Therefore, the USBHI bit can be used when an interrupt generation is detected by HCD.
Writing 1 in this register sets the corresponding bit, while writing 0 leaves the bit. When read, the
current value of this register is returned.
Rev. 3.00 Jan. 18, 2008 Page 776 of 1458
REJ09B0033-0300
Bit
31
30
29 to 7
6
5
Hc Interrupt Enable Register (USBHIE)
Bit Name
MIE
OC
RHSC
FNO
USB Host Controller (USBH)
Initial
Value
0
0
All 0
0
0
R/W
R/W
R/W
R
R/W
R/W
Description
Master Interrupt Enable
Setting this bit to 0 is ignored by the host controller. When
this bit is set to 1, an interrupt generation by the event
specified in another bit in this register is enabled. This is
used by HDC that the master interrupt is enabled. When
an interrupt is detected by HCD, use the USBIH bit of the
interrupt controller (INTC).
0: Ignored
1: Interrupt generation due to the specified event enabled
Ownership Change Enable
0: Ignored
1: Interrupt generation due to Ownership Change enabled
Reserved
These bits are always read as 0. The write value should
always be 0.
Root Hub Status Change Enable
0: Ignored
1: Interrupt generation due to Root Hub Status Change
Frame Number Overflow Enable
0: Ignored
1: Interrupt generation due to Frame Number Overflow
enabled
enabled
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