Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : DMA Transmit Data Level Register - dmatdlr

Description

Controls the FIFO Level for a DMA transmit request

Register Layout

Bits Access Reset Description
[7:0] RW 0x0 Transmit Data Level
[31:8] ??? 0x0 UNDEFINED

Field : Transmit Data Level - dmatdl

This bit field controls the level at which a DMA request is made by the transmit logic. It is equal to the watermark level; that is, the dma_tx_req signal is generated when the number of valid data entries in the transmit FIFO is equal to or below this field value, and TDMAE = 1.

Field Access Macros:

#define ALT_SPIM_DMATDLR_DMATDL_LSB   0
 
#define ALT_SPIM_DMATDLR_DMATDL_MSB   7
 
#define ALT_SPIM_DMATDLR_DMATDL_WIDTH   8
 
#define ALT_SPIM_DMATDLR_DMATDL_SET_MSK   0x000000ff
 
#define ALT_SPIM_DMATDLR_DMATDL_CLR_MSK   0xffffff00
 
#define ALT_SPIM_DMATDLR_DMATDL_RESET   0x0
 
#define ALT_SPIM_DMATDLR_DMATDL_GET(value)   (((value) & 0x000000ff) >> 0)
 
#define ALT_SPIM_DMATDLR_DMATDL_SET(value)   (((value) << 0) & 0x000000ff)
 

Data Structures

struct  ALT_SPIM_DMATDLR_s
 

Macros

#define ALT_SPIM_DMATDLR_OFST   0x50
 
#define ALT_SPIM_DMATDLR_ADDR(base)   ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_SPIM_DMATDLR_OFST))
 

Typedefs

typedef struct ALT_SPIM_DMATDLR_s ALT_SPIM_DMATDLR_t
 

Data Structure Documentation

struct ALT_SPIM_DMATDLR_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_SPIM_DMATDLR.

Data Fields
uint32_t dmatdl: 8 Transmit Data Level
uint32_t __pad0__: 24 UNDEFINED

Macro Definitions

#define ALT_SPIM_DMATDLR_DMATDL_LSB   0

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

#define ALT_SPIM_DMATDLR_DMATDL_MSB   7

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

#define ALT_SPIM_DMATDLR_DMATDL_WIDTH   8

The width in bits of the ALT_SPIM_DMATDLR_DMATDL register field.

#define ALT_SPIM_DMATDLR_DMATDL_SET_MSK   0x000000ff

The mask used to set the ALT_SPIM_DMATDLR_DMATDL register field value.

#define ALT_SPIM_DMATDLR_DMATDL_CLR_MSK   0xffffff00

The mask used to clear the ALT_SPIM_DMATDLR_DMATDL register field value.

#define ALT_SPIM_DMATDLR_DMATDL_RESET   0x0

The reset value of the ALT_SPIM_DMATDLR_DMATDL register field.

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

Extracts the ALT_SPIM_DMATDLR_DMATDL field value from a register.

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

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

#define ALT_SPIM_DMATDLR_OFST   0x50

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

#define ALT_SPIM_DMATDLR_ADDR (   base)    ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_SPIM_DMATDLR_OFST))

The address of the ALT_SPIM_DMATDLR register.

Typedef Documentation

The typedef declaration for register ALT_SPIM_DMATDLR.