URL https://opencores.org/ocsvn/neorv32/neorv32/trunk

Subversion Repositories neorv32

[/] [neorv32/] [trunk/] [docs/] [datasheet/] [soc_spi.adoc] - Diff between revs 68 and 69

Rev 68	Rev 69
Line 106...	Line 106...


`SPI Interrupt`	`SPI Interrupt`

`The SPI module provides a single interrupt to signal "transmission done" to the CPU. Whenever the SPI`	`The SPI module provides a single interrupt to signal "transmission done" to the CPU. Whenever the SPI`
`module completes the current transfer operation, the interrupt request is set. A pending interrupt request`	`module completes the current transfer operation, the interrupt is triggered and has to be explicitly cleared again`
`is cleared by any of the following operations:`	by setting the according `mip` CSR bit.
* read or write access to `NEORV32_SPI.DATA` (for example to trigger a new transmission)
* write access to `NEORV32_SPI.CTRL`
`* disabling the SPI module`

`[TIP]`
A dummy read from `NEORV32_SPI.DATA` can be executed to acknowledge the interrupt without affecting data
`or the state of the SPI module.`


.SPI register map (`struct NEORV32_SPI`)	.SPI register map (`struct NEORV32_SPI`)
`[cols="<2,<2,<4,^1,<7"]`	`[cols="<2,<2,<4,^1,<7"]`
`[options="header",grid="all"]`	`[options="header",grid="all"]`