Datasheet

Section 16 USB Function Module (USB)
R01UH0309EJ0500 Rev. 5.00 Page 987 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
Register Bit
Transfer
Mode
Interrupt
Source Description
Interrupt
Request Signal
DMAC
Activation
0 Bulk_out
transfer
(EP1)
EP1_FULL EP1 FIFO full USBINTN2 or USBINTN3 USBINTN0
(DREQ0)
1 EP2_ALLEMP EP2 FIFO all empty USBINTN2 or USBINTN3 x
2 EP2_EMPTY EP2 FIFO empty USBINTN2 or USBINTN3 USBINTN1
(DREQ1)
3
Bulk_in
transfer
(EP2)
EP2_TR EP2 transfer request USBINTN2 or USBINTN3 x
4 EP3_TS EP3 transmission
complete
USBINTN2 or USBINTN3 x
5
Interrupt_in
transfer
(EP3)
EP3_TR EP3 transfer request USBINTN2 or USBINTN3 x
6 ⎯ Reserved ⎯ ⎯ ⎯
IFR2
7 ⎯ Reserved ⎯ ⎯ ⎯
Note: * EP0 interrupts must be assigned to the same interrupt request signal.
• USB INTN0 signal
DMA transfer request signal only for EP1. See section 16.8, DMA Transfer.
• USB INTN1 signal
DMA transfer request signal only for EP2. See section 16.8, DMA Transfer.
• USB INTN2 signal
The USB INTN2 signal requests interrupt sources for which the corresponding bits in interrupt
select registers 0 and 2 (ISR0 and ISR2) are cleared to 0. The USB INTN2 is driven low if a
corresponding bit in the interrupt flag register is set to 1.
• USB INTN3 signal
The USBINTN3 signal requests interrupt sources for which the corresponding bits in interrupt
select registers 0 to 2 (ISR0 and ISR2) are cleared to 0. The USB INTN3 is driven low if a
corresponding bit in the interrupt flag register is set to 1.
• RESUME signal
The RESUME signal is a resume interrupt signal for canceling software standby mode. The
RESUME signal is driven low at the transition to the resume state for canceling software
standby mode.