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Altera SoCAL
16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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The number of bytes to be transferred.
Register Layout
Bits | Access | Reset | Description |
---|---|---|---|
[31:0] | RW | 0x200 | Byte Count |
Field : Byte Count - byte_count | |
This value should be an integer multiple of the 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. Note: In SDIO mode, if a single transfer is greater than 4 bytes and non-DWORD- aligned, the transfer should be broken where only the last transfer is non- DWORD-aligned and less than 4 bytes. For example, if a transfer of 129 bytes must occur, then the driver should start at least two transfers; one with 128 bytes and the other with 1 byte. 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_OFST 0x20 |
Typedefs | |
typedef struct ALT_SDMMC_BYTCNT_s | ALT_SDMMC_BYTCNT_t |
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 | ||
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uint32_t | byte_count: 32 | Byte Count |
#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_OFST 0x20 |
The byte offset of the ALT_SDMMC_BYTCNT register from the beginning of the component.
typedef struct ALT_SDMMC_BYTCNT_s ALT_SDMMC_BYTCNT_t |
The typedef declaration for register ALT_SDMMC_BYTCNT.