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Altera SoCAL
16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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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 |
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 |
#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 struct ALT_NAND_CFG_DEVICE_WIDTH_s ALT_NAND_CFG_DEVICE_WIDTH_t |
The typedef declaration for register ALT_NAND_CFG_DEVICE_WIDTH.