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Altera SoCAL
16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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SSI Enable Register
Register Layout
Bits | Access | Reset | Description |
---|---|---|---|
[0] | RW | 0x0 | ALT_SPIS_SPIENR_SPI_EN |
[31:1] | ??? | 0x0 | UNDEFINED |
Field : 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. Field Enumeration Values:
Field Access Macros: | ||||||||||
#define | ALT_SPIS_SPIENR_SPI_EN_E_DISD 0x0 | |||||||||
#define | ALT_SPIS_SPIENR_SPI_EN_E_END 0x1 | |||||||||
#define | ALT_SPIS_SPIENR_SPI_EN_LSB 0 | |||||||||
#define | ALT_SPIS_SPIENR_SPI_EN_MSB 0 | |||||||||
#define | ALT_SPIS_SPIENR_SPI_EN_WIDTH 1 | |||||||||
#define | ALT_SPIS_SPIENR_SPI_EN_SET_MSK 0x00000001 | |||||||||
#define | ALT_SPIS_SPIENR_SPI_EN_CLR_MSK 0xfffffffe | |||||||||
#define | ALT_SPIS_SPIENR_SPI_EN_RESET 0x0 | |||||||||
#define | ALT_SPIS_SPIENR_SPI_EN_GET(value) (((value) & 0x00000001) >> 0) | |||||||||
#define | ALT_SPIS_SPIENR_SPI_EN_SET(value) (((value) << 0) & 0x00000001) | |||||||||
Data Structures | |
struct | ALT_SPIS_SPIENR_s |
Macros | |
#define | ALT_SPIS_SPIENR_RESET 0x00000000 |
#define | ALT_SPIS_SPIENR_OFST 0x8 |
#define | ALT_SPIS_SPIENR_ADDR(base) ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_SPIS_SPIENR_OFST)) |
Typedefs | |
typedef struct ALT_SPIS_SPIENR_s | ALT_SPIS_SPIENR_t |
struct ALT_SPIS_SPIENR_s |
WARNING: The C register and register group struct declarations are provided for convenience and illustrative purposes. They should, however, be used with caution as the C language standard provides no guarantees about the alignment or atomicity of device memory accesses. The recommended practice for writing hardware drivers is to use the SoCAL access macros and alt_read_word() and alt_write_word() functions.
The struct declaration for register ALT_SPIS_SPIENR.
Data Fields | ||
---|---|---|
uint32_t | spi_en: 1 | ALT_SPIS_SPIENR_SPI_EN |
uint32_t | __pad0__: 31 | UNDEFINED |
#define ALT_SPIS_SPIENR_SPI_EN_E_DISD 0x0 |
Enumerated value for register field ALT_SPIS_SPIENR_SPI_EN
Disables serial transfer operations
#define ALT_SPIS_SPIENR_SPI_EN_E_END 0x1 |
Enumerated value for register field ALT_SPIS_SPIENR_SPI_EN
Enables serial transfer operations
#define ALT_SPIS_SPIENR_SPI_EN_LSB 0 |
The Least Significant Bit (LSB) position of the ALT_SPIS_SPIENR_SPI_EN register field.
#define ALT_SPIS_SPIENR_SPI_EN_MSB 0 |
The Most Significant Bit (MSB) position of the ALT_SPIS_SPIENR_SPI_EN register field.
#define ALT_SPIS_SPIENR_SPI_EN_WIDTH 1 |
The width in bits of the ALT_SPIS_SPIENR_SPI_EN register field.
#define ALT_SPIS_SPIENR_SPI_EN_SET_MSK 0x00000001 |
The mask used to set the ALT_SPIS_SPIENR_SPI_EN register field value.
#define ALT_SPIS_SPIENR_SPI_EN_CLR_MSK 0xfffffffe |
The mask used to clear the ALT_SPIS_SPIENR_SPI_EN register field value.
#define ALT_SPIS_SPIENR_SPI_EN_RESET 0x0 |
The reset value of the ALT_SPIS_SPIENR_SPI_EN register field.
#define ALT_SPIS_SPIENR_SPI_EN_GET | ( | value | ) | (((value) & 0x00000001) >> 0) |
Extracts the ALT_SPIS_SPIENR_SPI_EN field value from a register.
#define ALT_SPIS_SPIENR_SPI_EN_SET | ( | value | ) | (((value) << 0) & 0x00000001) |
Produces a ALT_SPIS_SPIENR_SPI_EN register field value suitable for setting the register.
#define ALT_SPIS_SPIENR_RESET 0x00000000 |
The reset value of the ALT_SPIS_SPIENR register.
#define ALT_SPIS_SPIENR_OFST 0x8 |
The byte offset of the ALT_SPIS_SPIENR register from the beginning of the component.
#define ALT_SPIS_SPIENR_ADDR | ( | base | ) | ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_SPIS_SPIENR_OFST)) |
The address of the ALT_SPIS_SPIENR register.
typedef struct ALT_SPIS_SPIENR_s ALT_SPIS_SPIENR_t |
The typedef declaration for register ALT_SPIS_SPIENR.