1. Interrupt line block (irq)
Wbgen2 provides an easy way to multiplex several interrupts from the
peripheral into a single Wishbone wb_irq_o
IRQ request line. Designer
can specify up to 32 interrupt sources per peripheral. Wbgen2 will:
- add the interrupt lines to the Wishbone slave core,
- instantiate an Embedded Interrupt Controller for enabling, disabling
and acknowledging the interrupts (see figure 1)
Figure 1.* Interrupt support in wbgen2 slave cores.
1.1. Block-specific attributes
Attribute | Status | Description |
trigger = |
mandatory | Trigger condition for the interrupt: can be choosen from: LEVEL_1 (high logic level), LEVEL_0 , EDGE_RISING , EDGE_FALLING
|