TX4939XBG-400 Datasheet, PDF (163/740 Pages) Toshiba Semiconductor – 64-Bit TX System RISC TX49 Family

INTC
Toshiba RISC Processor
TX4939
Chapter 8. Interrupt Controller
8.1. Characteristics
The TX4939 on-chip Interrupt Controller (IRC) receives interrupt requests from the TX4939 on-chip peripheral circuitry as
well as external interrupt requests and in turn generates interrupt requests to the TX49/H4 processor core.
Also, this Interrupt Controller has a 16-bit flag register that generates interrupt requests either to the external devices or to
the TX49/H4 core.
The Interrupt Controller has the following characteristics.
‹ Supports interrupts from 47 types of on-chip peripheral circuits and a maximum of 3 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.
‹ The Interrupt Controller contains a 16-bit readable/write-able flag register which can be programmed to issue
interrupt requests to external devices as well as to the TX49/H4 core (IRC interrupt).
8
Rev. 3.1 November 1, 2005
8-1