spienr
SSI Enable Register
| Module Instance | Base Address | Register Address |
|---|---|---|
| i_spis_0_spis | 0xFFDA2000 | 0xFFDA2008 |
| i_spis_1_spis | 0xFFDA3000 | 0xFFDA3008 |
Offset: 0x8
Access: RW
Important: The value of a reserved bit must be maintained in software. When you modify registers containing reserved bit fields, you must use a read-modify-write operation to preserve state and prevent indeterminate system behavior.
| Bit Fields | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
Reserved |
|||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved |
spi_en RW 0x0 |
||||||||||||||
spienr Fields
| Bit | Name | Description | Access | Reset | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0 | spi_en | SSI Enable. Enables and disables all DW_apb_ssi operations. When disabled, all serial transfers are halted immediately. Transmit and receive FIFO buffers are cleared when the device is disabled. It is impossible to program some of the DW_apb_ssi control registers when enabled. When disabled, the ssi_sleep output is set (after delay) to inform the system that it is safe to remove the ssi_clk, thus saving power consumption in the system.
|
RW | 0x0 |