Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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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] ??? Unknown UNDEFINED

Field : value

Controller will read Electronic Signature of devices and populate

this field. For 512B devices, bootstrap_x16_device will determine the value of

this field. Software could also choose to override the populated value.

The values in this field should be as follows[list][*]2'h00 - 8bit device[*]

2'h01 - 16bit 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_RESET   0x00000003
 
#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_RESET   0x00000003

The reset value of the ALT_NAND_CFG_DEVICE_WIDTH 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.