Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
 All Data Structures Variables Typedefs Groups
Register : device_width

Description

I/O width of attached devices

Register Layout

Bits Access Reset Description
[1:0] RW 0x3 ALT_NAND_CFG_DEVICE_WIDTH_VALUE
[31:2] ??? 0x0 UNDEFINED

Field : value

Controller will read Electronic Signature of devices and populate this field. Software could also choose to override the populated value although only one value is supported. The values in this field should be as follows[list][*]2'h00

  • 8bit device[*]All other values - Reserved[/list]

Field Access Macros:

#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_LSB   0
 
#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_MSB   1
 
#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_WIDTH   2
 
#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_SET_MSK   0x00000003
 
#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_CLR_MSK   0xfffffffc
 
#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_RESET   0x3
 
#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_GET(value)   (((value) & 0x00000003) >> 0)
 
#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_SET(value)   (((value) << 0) & 0x00000003)
 

Data Structures

struct  ALT_NAND_CFG_DEVICE_WIDTH_s
 

Macros

#define ALT_NAND_CFG_DEVICE_WIDTH_OFST   0x160
 

Typedefs

typedef struct
ALT_NAND_CFG_DEVICE_WIDTH_s 
ALT_NAND_CFG_DEVICE_WIDTH_t
 

Data Structure Documentation

struct ALT_NAND_CFG_DEVICE_WIDTH_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_NAND_CFG_DEVICE_WIDTH.

Data Fields
uint32_t value: 2 ALT_NAND_CFG_DEVICE_WIDTH_VALUE
uint32_t __pad0__: 30 UNDEFINED

Macro Definitions

#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_LSB   0

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

#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_MSB   1

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

#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_WIDTH   2

The width in bits of the ALT_NAND_CFG_DEVICE_WIDTH_VALUE register field.

#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_SET_MSK   0x00000003

The mask used to set the ALT_NAND_CFG_DEVICE_WIDTH_VALUE register field value.

#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_CLR_MSK   0xfffffffc

The mask used to clear the ALT_NAND_CFG_DEVICE_WIDTH_VALUE register field value.

#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_RESET   0x3

The reset value of the ALT_NAND_CFG_DEVICE_WIDTH_VALUE register field.

#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_GET (   value)    (((value) & 0x00000003) >> 0)

Extracts the ALT_NAND_CFG_DEVICE_WIDTH_VALUE field value from a register.

#define ALT_NAND_CFG_DEVICE_WIDTH_VALUE_SET (   value)    (((value) << 0) & 0x00000003)

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

#define ALT_NAND_CFG_DEVICE_WIDTH_OFST   0x160

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

Typedef Documentation

The typedef declaration for register ALT_NAND_CFG_DEVICE_WIDTH.