Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : DRAM Interface Data Width Register - dramifwidth

Description

Register Layout

Bits Access Reset Description
[7:0] RW Unknown DRAM Interface Data Width
[31:8] ??? 0x0 UNDEFINED

Field : DRAM Interface Data Width - ifwidth

This register controls the interface width of the SDRAM interface, including any bits used for ECC. For example, for a 32-bit interface with ECC, program this register with 0x28. You must also program the ctrlwidth register.

Field Access Macros:

#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_LSB   0
 
#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_MSB   7
 
#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_WIDTH   8
 
#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_SET_MSK   0x000000ff
 
#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_CLR_MSK   0xffffff00
 
#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_RESET   0x0
 
#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_GET(value)   (((value) & 0x000000ff) >> 0)
 
#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_SET(value)   (((value) << 0) & 0x000000ff)
 

Data Structures

struct  ALT_SDR_CTL_DRAMIFWIDTH_s
 

Macros

#define ALT_SDR_CTL_DRAMIFWIDTH_OFST   0x30
 

Typedefs

typedef struct
ALT_SDR_CTL_DRAMIFWIDTH_s 
ALT_SDR_CTL_DRAMIFWIDTH_t
 

Data Structure Documentation

struct ALT_SDR_CTL_DRAMIFWIDTH_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_SDR_CTL_DRAMIFWIDTH.

Data Fields
uint32_t ifwidth: 8 DRAM Interface Data Width
uint32_t __pad0__: 24 UNDEFINED

Macro Definitions

#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_LSB   0

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

#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_MSB   7

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

#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_WIDTH   8

The width in bits of the ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH register field.

#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_SET_MSK   0x000000ff

The mask used to set the ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH register field value.

#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_CLR_MSK   0xffffff00

The mask used to clear the ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH register field value.

#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_RESET   0x0

The reset value of the ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH register field is UNKNOWN.

#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_GET (   value)    (((value) & 0x000000ff) >> 0)

Extracts the ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH field value from a register.

#define ALT_SDR_CTL_DRAMIFWIDTH_IFWIDTH_SET (   value)    (((value) << 0) & 0x000000ff)

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

#define ALT_SDR_CTL_DRAMIFWIDTH_OFST   0x30

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

Typedef Documentation

The typedef declaration for register ALT_SDR_CTL_DRAMIFWIDTH.