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Interrupt signals
The following table shows the GIC-600 interrupt signal set.
Table A-3 Interrupt signals
| Signal name | Type | Source or destination | Description |
|---|---|---|---|
| ppi<n><[_<ppi_block>][_<bus>][_<num_cpus − 1:0>] | Input | Interrupt source |
PPI input wires for interrupt <n>. One bit per core. n is 16-31 if the number of PPIs per core is 16. n is 20-31 if the number of PPIs per core is 12. n is 22-27, 29, 30 if number of PPIs per core is 8. |
| ppi<n>_r_[_<ppi_block>][_<bus>] | Output | Interrupt source | PPI output after synchronization and edge detection. You can use it for cross-domain pulse detection. |
| spi[variable:0] | Input | Interrupt source |
This is the number of SPI wires that are supported by the GIC. NoteThis is not the same as the number of SPIs supported because they could be message-based only or be on another chip. |
| spi_r[variable:0] | Output | Interrupt source | SPI output after synchronization and edge detection. Can be used for cross-domain pulse detection. |