Interrupt Controller; Characteristics - Toshiba TMPR4937 Manual

15. Interrupt Controller

15.1 Characteristics

The TX4937 on-chip Interrupt Controller (IRC) receives interrupt requests from the TX4937 on-chip
peripheral circuitry as well as external interrupt requests then generates interrupt requests to the TX49/H3
processor core.
Also, the Interrupt Controller has a 16-bit flag register that generates interrupt requests to either external
devices or to the TX49/H3 core.
The Interrupt Controller has the following characteristics.
•
Supports interrupts from 18 types of on-chip peripheral circuits and a maximum of 6 external
interrupt signal inputs
•
Sets 8 priority interrupt levels for each interrupt input
•
Can select either edge detection or level detection for each external interrupt when in the interrupt
detection mode
•
As a flag register used for interrupt requests, the Interrupt Controller contains a 16-bit
readable/writeable register and can issue interrupt requests to external devices as well as to the
TX49/H3 core (IRC interrupt).
Chapter 15 Interrupt Controller
15-1