r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 953

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

16.3.9
ISR2 selects the vector numbers of the interrupt requests indicated in interrupt flag register 2
(IFR2). If the USB issues an interrupt request to the INTC when a bit in ISR2 is cleared to 0, the
interrupt corresponding to the bit will be USBINTN2. If the USB issues an interrupt request to the
INTC when a bit in ISR2 is set to 1, the corresponding interrupt will be USBINTN3.
16.3.10 EP0i Data Register (EPDR0i)
EPDR0i is a 16-byte transmit FIFO buffer for endpoint 0. EPDR0i holds one packet of transmit
data for control-in. Transmit data is fixed by writing one packet of data and setting EP0i PKTE in
trigger register 0. When an ACK handshake is returned from the host after the data has been
transmitted, EP0i TS in interrupt flag register 1 is set. This FIFO buffer can be initialized by
means of EP0i CLR in FCLR register 0.
Bit
7
6
5
4
3
2
1
0
Bit
7 to 0
Interrupt Select Register 2 (ISR2)
Bit Name


EP3 TRS
EP3 TSS
EP2 TRS
EP2
EMPTYS
EP2
ALLEMPS
EP1 FULLS 0
Bit Name
D7 to D0
Initial
Value
0
0
0
0
0
0
0
Initial
Value
Undefined W
R/W


R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
EP3 Transmission Complete
EP2 FIFO All Empty
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
EP3 Transfer Request
EP2 Transfer Request
EP2 FIFO Empty
EP1 FIFO Full
Data register for control-in transfer
Rev. 1.00 Sep. 19, 2008 Page 923 of 1342
Section 16 USB Function Module (USB)
REJ09B0467-0100