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

Subversion Repositories neorv32

[/] [neorv32/] [trunk/] [docs/] [datasheet/] [soc_spi.adoc] - Diff between revs 66 and 68

Rev 66	Rev 68
Line 105...	Line 105...
`Hence, the maximum SPI clock is f~main~ / 4.`	`Hence, the maximum SPI clock is f~main~ / 4.`


`SPI Interrupt`	`SPI Interrupt`

`The SPI module provides a single interrupt to signal "ready for new transmission" to the CPU. Whenever the SPI`	`The SPI module provides a single interrupt to signal "transmission done" to the CPU. Whenever the SPI`
`module is currently idle (and enabled), the interrupt request is active. A pending interrupt request is cleared`	`module completes the current transfer operation, the interrupt request is set. A pending interrupt request`
`by triggering a new SPI transmission or by disabling the SPI module.`	`is cleared by any of the following operations:`
	* 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"]`