h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 372

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

12.4
This module has two interrupt sources. The interrupt select register 0 is used to set the
correspondence between interrupt flags and interrupt sources (USBI1 and USBI0). Basically, all
processing is possible by using only one interrupt source. If there is an interrupt source whose
response needs to be fast, priority can be set by using the second interrupt source.
Among interrupt sources of this module, an interrupt source related to endpoint 0 (bits 3 to 0 in
IFR0) must be assigned to the same interrupt source.
12.4.1
The USBI0 is an interrupt request for an interrupt source in which 0 is set by the interrupt select
register 0. Among interrupt sources assigned to the USBI0, when only one of a corresponding bit
in the interrupt flag register 0 is set to 1, an interrupt request occurs.
12.4.2
The USBI1 is an interrupt request for an interrupt source in which 1 is set by the interrupt select
register 0. Among interrupt sources assigned to the USBI1, when only one of a corresponding bit
in the interrupt flag register 0 is set to 1, an interrupt request occurs.
Rev. 2.00, 03/04, page 340 of 534
USBI0 Interrupt
USBI1 Interrupt
Interrupt Pins