HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 804

• Manufacturer Part Number: HD6417641
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 20 USB Function Module
20.3.5
USBISR1 selects the vector numbers of the interrupt requests indicated in USB interrupt flag
register 1 (USBIFR1). If the USB issues an interrupt request to the INTC when the corresponding
bit in USBISR1 is cleared to 0, the interrupt will be USI0 (USB interrupt 0). If the USB issues an
interrupt request to the INTC when the corresponding bit in USBISR1 is set to 1, the interrupt will
be USI1 (USB interrupt 1). If interrupts occur simultaneously, USI0 has priority by default.
USBISR1 is initialized to H'07 by a power-on reset.
20.3.6
USBIER0 enables the interrupt requests indicated in USB interrupt flag register 0 (USBIFR0).
When an interrupt flag is set while the corresponding bit in USBIER0 is set to 1, an interrupt
request is sent to the CPU. The interrupt vector number is decided by the contents of USB
interrupt select register 0 (USBISR0).
USBIER0 is initialized to H'00 by a power-on reset.
Rev. 4.00 Sep. 14, 2005 Page 754 of 982
REJ09B0023-0400
Bit
7 to 3
2
1
0
Bit
7
6
5
4
3
2
1
0
USB Interrupt Select Register 1 (USBISR1)
USB Interrupt Enable Register 0 (USBIER0)
Bit Name

EP3TR
EP3TS
VBUSF
Bit Name
BRST
EP1FULL
EP2TR
EP2EMPTY 0
SETUPTS
EP0oTS
EP0iTR
EP0iTS
Initial
Value
All 0
0
0
0
Initial
Value
0
0
0
0
0
0
0
R/W
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Reserved
The write value should always be 0.
EP3 transfer request
EP3 transmission completion
USB bus connection
Description
Bus reset
EP1FIFO full
EP2 transfer request
EP2 FIFO empty
Setup command receive completion
EPOo receive completion
EPOi transfer request
EPOi transmit completion