Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : bytcnt

Description

Byte Count Register

Register Layout

Bits Access Reset Description
[31:0] RW 0x200 ALT_SDMMC_BYTCNT_BYTE_COUNT

Field : byte_count

Number of bytes to be transferred; should be integer multiple of Block Size for block transfers.

For undefined number of byte transfers, byte count should be set to 0. When byte count is set to 0, it is responsibility of host to explicitly send stop/abort command to terminate data transfer.

Field Access Macros:

#define ALT_SDMMC_BYTCNT_BYTE_COUNT_LSB   0
 
#define ALT_SDMMC_BYTCNT_BYTE_COUNT_MSB   31
 
#define ALT_SDMMC_BYTCNT_BYTE_COUNT_WIDTH   32
 
#define ALT_SDMMC_BYTCNT_BYTE_COUNT_SET_MSK   0xffffffff
 
#define ALT_SDMMC_BYTCNT_BYTE_COUNT_CLR_MSK   0x00000000
 
#define ALT_SDMMC_BYTCNT_BYTE_COUNT_RESET   0x200
 
#define ALT_SDMMC_BYTCNT_BYTE_COUNT_GET(value)   (((value) & 0xffffffff) >> 0)
 
#define ALT_SDMMC_BYTCNT_BYTE_COUNT_SET(value)   (((value) << 0) & 0xffffffff)
 

Data Structures

struct  ALT_SDMMC_BYTCNT_s
 

Macros

#define ALT_SDMMC_BYTCNT_RESET   0x00000200
 
#define ALT_SDMMC_BYTCNT_OFST   0x20
 

Typedefs

typedef struct ALT_SDMMC_BYTCNT_s ALT_SDMMC_BYTCNT_t
 

Data Structure Documentation

struct ALT_SDMMC_BYTCNT_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_BYTCNT.

Data Fields
uint32_t byte_count: 32 ALT_SDMMC_BYTCNT_BYTE_COUNT

Macro Definitions

#define ALT_SDMMC_BYTCNT_BYTE_COUNT_LSB   0

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

#define ALT_SDMMC_BYTCNT_BYTE_COUNT_MSB   31

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

#define ALT_SDMMC_BYTCNT_BYTE_COUNT_WIDTH   32

The width in bits of the ALT_SDMMC_BYTCNT_BYTE_COUNT register field.

#define ALT_SDMMC_BYTCNT_BYTE_COUNT_SET_MSK   0xffffffff

The mask used to set the ALT_SDMMC_BYTCNT_BYTE_COUNT register field value.

#define ALT_SDMMC_BYTCNT_BYTE_COUNT_CLR_MSK   0x00000000

The mask used to clear the ALT_SDMMC_BYTCNT_BYTE_COUNT register field value.

#define ALT_SDMMC_BYTCNT_BYTE_COUNT_RESET   0x200

The reset value of the ALT_SDMMC_BYTCNT_BYTE_COUNT register field.

#define ALT_SDMMC_BYTCNT_BYTE_COUNT_GET (   value)    (((value) & 0xffffffff) >> 0)

Extracts the ALT_SDMMC_BYTCNT_BYTE_COUNT field value from a register.

#define ALT_SDMMC_BYTCNT_BYTE_COUNT_SET (   value)    (((value) << 0) & 0xffffffff)

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

#define ALT_SDMMC_BYTCNT_RESET   0x00000200

The reset value of the ALT_SDMMC_BYTCNT register.

#define ALT_SDMMC_BYTCNT_OFST   0x20

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

Typedef Documentation

The typedef declaration for register ALT_SDMMC_BYTCNT.