r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 979

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Note:
• USB INTN0 signal
• USB INTN1 signal
• USB INTN2 signal
• USB INTN3 signal
• RESUME signal
Register
IFR2
DMA transfer request signal only for EP1. See section 16.8, DMA Transfer.
DMA transfer request signal only for EP2. See section 16.8, DMA Transfer.
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.
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.
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.
*
Bit
0
1
2
3
4
5
6
7
EP0 interrupts must be assigned to the same interrupt request signal.
Transfer
Mode
Bulk_out
transfer
(EP1)
Bulk_in
transfer
(EP2)
Interrupt_in
transfer
(EP3)


Interrupt
Source
EP1_FULL
EP2_ALLEMP
EP2_EMPTY
EP2_TR
EP3_TS
EP3_TR
Reserved
Reserved
Description
EP2 FIFO all empty
EP2 FIFO empty
EP3 transmission
complete

EP1 FIFO full
EP2 transfer request
EP3 transfer request

Rev. 1.00 Sep. 19, 2008 Page 949 of 1342
Section 16 USB Function Module (USB)
Interrupt
Request Signal
USBINTN2 or USBINTN3 USBINTN0
USBINTN2 or USBINTN3 ×
USBINTN2 or USBINTN3 USBINTN1
USBINTN2 or USBINTN3 ×
USBINTN2 or USBINTN3 ×
USBINTN2 or USBINTN3 ×


REJ09B0467-0100
DMAC
Activation
(DREQ0)
(DREQ1)

