Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : Power Enable Register - pwren

Description

Power on/off switch for card; once power is turned on, firmware should wait for regulator/switch ramp-up time before trying to initialize card.

Register Layout

Bits Access Reset Description
[0] RW 0x0 Power Enable
[31:1] ??? 0x0 UNDEFINED

Field : Power Enable - power_enable

Power on/off switch for one card; for example, bit[0] controls the card. Once power is turned on, firmware should wait for regulator/switch ramp-up time before trying to initialize card.

Field Enumeration Values:

Enum Value Description
ALT_SDMMC_PWREN_POWER_EN_E_OFF 0x0 Power Off
ALT_SDMMC_PWREN_POWER_EN_E_ON 0x1 Power On

Field Access Macros:

#define ALT_SDMMC_PWREN_POWER_EN_E_OFF   0x0
 
#define ALT_SDMMC_PWREN_POWER_EN_E_ON   0x1
 
#define ALT_SDMMC_PWREN_POWER_EN_LSB   0
 
#define ALT_SDMMC_PWREN_POWER_EN_MSB   0
 
#define ALT_SDMMC_PWREN_POWER_EN_WIDTH   1
 
#define ALT_SDMMC_PWREN_POWER_EN_SET_MSK   0x00000001
 
#define ALT_SDMMC_PWREN_POWER_EN_CLR_MSK   0xfffffffe
 
#define ALT_SDMMC_PWREN_POWER_EN_RESET   0x0
 
#define ALT_SDMMC_PWREN_POWER_EN_GET(value)   (((value) & 0x00000001) >> 0)
 
#define ALT_SDMMC_PWREN_POWER_EN_SET(value)   (((value) << 0) & 0x00000001)
 

Data Structures

struct  ALT_SDMMC_PWREN_s
 

Macros

#define ALT_SDMMC_PWREN_OFST   0x4
 

Typedefs

typedef struct ALT_SDMMC_PWREN_s ALT_SDMMC_PWREN_t
 

Data Structure Documentation

struct ALT_SDMMC_PWREN_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_SDMMC_PWREN.

Data Fields
uint32_t power_enable: 1 Power Enable
uint32_t __pad0__: 31 UNDEFINED

Macro Definitions

#define ALT_SDMMC_PWREN_POWER_EN_E_OFF   0x0

Enumerated value for register field ALT_SDMMC_PWREN_POWER_EN

Power Off

#define ALT_SDMMC_PWREN_POWER_EN_E_ON   0x1

Enumerated value for register field ALT_SDMMC_PWREN_POWER_EN

Power On

#define ALT_SDMMC_PWREN_POWER_EN_LSB   0

The Least Significant Bit (LSB) position of the ALT_SDMMC_PWREN_POWER_EN register field.

#define ALT_SDMMC_PWREN_POWER_EN_MSB   0

The Most Significant Bit (MSB) position of the ALT_SDMMC_PWREN_POWER_EN register field.

#define ALT_SDMMC_PWREN_POWER_EN_WIDTH   1

The width in bits of the ALT_SDMMC_PWREN_POWER_EN register field.

#define ALT_SDMMC_PWREN_POWER_EN_SET_MSK   0x00000001

The mask used to set the ALT_SDMMC_PWREN_POWER_EN register field value.

#define ALT_SDMMC_PWREN_POWER_EN_CLR_MSK   0xfffffffe

The mask used to clear the ALT_SDMMC_PWREN_POWER_EN register field value.

#define ALT_SDMMC_PWREN_POWER_EN_RESET   0x0

The reset value of the ALT_SDMMC_PWREN_POWER_EN register field.

#define ALT_SDMMC_PWREN_POWER_EN_GET (   value)    (((value) & 0x00000001) >> 0)

Extracts the ALT_SDMMC_PWREN_POWER_EN field value from a register.

#define ALT_SDMMC_PWREN_POWER_EN_SET (   value)    (((value) << 0) & 0x00000001)

Produces a ALT_SDMMC_PWREN_POWER_EN register field value suitable for setting the register.

#define ALT_SDMMC_PWREN_OFST   0x4

The byte offset of the ALT_SDMMC_PWREN register from the beginning of the component.

Typedef Documentation

The typedef declaration for register ALT_SDMMC_PWREN.