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

Description

This register supports DMA Transmit Operation.

Register Layout

Bits Access Reset Description
[5:0] RW 0x0 DMA Transmit Data Level Bit
[31:6] ??? 0x0 UNDEFINED

Field : DMA Transmit Data Level Bit - 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 i2c_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_I2C_DMA_TDLR_DMATDL_LSB   0
 
#define ALT_I2C_DMA_TDLR_DMATDL_MSB   5
 
#define ALT_I2C_DMA_TDLR_DMATDL_WIDTH   6
 
#define ALT_I2C_DMA_TDLR_DMATDL_SET_MSK   0x0000003f
 
#define ALT_I2C_DMA_TDLR_DMATDL_CLR_MSK   0xffffffc0
 
#define ALT_I2C_DMA_TDLR_DMATDL_RESET   0x0
 
#define ALT_I2C_DMA_TDLR_DMATDL_GET(value)   (((value) & 0x0000003f) >> 0)
 
#define ALT_I2C_DMA_TDLR_DMATDL_SET(value)   (((value) << 0) & 0x0000003f)
 

Data Structures

struct  ALT_I2C_DMA_TDLR_s
 

Macros

#define ALT_I2C_DMA_TDLR_OFST   0x8c
 
#define ALT_I2C_DMA_TDLR_ADDR(base)   ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_I2C_DMA_TDLR_OFST))
 

Typedefs

typedef struct ALT_I2C_DMA_TDLR_s ALT_I2C_DMA_TDLR_t
 

Data Structure Documentation

struct ALT_I2C_DMA_TDLR_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_I2C_DMA_TDLR.

Data Fields
uint32_t dmatdl: 6 DMA Transmit Data Level Bit
uint32_t __pad0__: 26 UNDEFINED

Macro Definitions

#define ALT_I2C_DMA_TDLR_DMATDL_LSB   0

The Least Significant Bit (LSB) position of the ALT_I2C_DMA_TDLR_DMATDL register field.

#define ALT_I2C_DMA_TDLR_DMATDL_MSB   5

The Most Significant Bit (MSB) position of the ALT_I2C_DMA_TDLR_DMATDL register field.

#define ALT_I2C_DMA_TDLR_DMATDL_WIDTH   6

The width in bits of the ALT_I2C_DMA_TDLR_DMATDL register field.

#define ALT_I2C_DMA_TDLR_DMATDL_SET_MSK   0x0000003f

The mask used to set the ALT_I2C_DMA_TDLR_DMATDL register field value.

#define ALT_I2C_DMA_TDLR_DMATDL_CLR_MSK   0xffffffc0

The mask used to clear the ALT_I2C_DMA_TDLR_DMATDL register field value.

#define ALT_I2C_DMA_TDLR_DMATDL_RESET   0x0

The reset value of the ALT_I2C_DMA_TDLR_DMATDL register field.

#define ALT_I2C_DMA_TDLR_DMATDL_GET (   value)    (((value) & 0x0000003f) >> 0)

Extracts the ALT_I2C_DMA_TDLR_DMATDL field value from a register.

#define ALT_I2C_DMA_TDLR_DMATDL_SET (   value)    (((value) << 0) & 0x0000003f)

Produces a ALT_I2C_DMA_TDLR_DMATDL register field value suitable for setting the register.

#define ALT_I2C_DMA_TDLR_OFST   0x8c

The byte offset of the ALT_I2C_DMA_TDLR register from the beginning of the component.

#define ALT_I2C_DMA_TDLR_ADDR (   base)    ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_I2C_DMA_TDLR_OFST))

The address of the ALT_I2C_DMA_TDLR register.

Typedef Documentation

The typedef declaration for register ALT_I2C_DMA_TDLR.