Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : Receive Data Level - ic_dma_rdlr

Description

DMA Control Signals Interface.

Register Layout

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

Field : Receive Data Level Bits - dmardl

This bit field controls the level at which a DMA request is made by the receive logic. The watermark level \= DMARDL+1; that is, dma_rx_req is generated when the number of valid data entries in the receive FIFO is equal to or more than this field value + 1, and RDMAE =1. For instance, when DMARDL is 0, then dma_rx_req is asserted when or more data entries are present in the receive FIFO.

Field Access Macros:

#define ALT_I2C_DMA_RDLR_DMARDL_LSB   0
 
#define ALT_I2C_DMA_RDLR_DMARDL_MSB   5
 
#define ALT_I2C_DMA_RDLR_DMARDL_WIDTH   6
 
#define ALT_I2C_DMA_RDLR_DMARDL_SET_MSK   0x0000003f
 
#define ALT_I2C_DMA_RDLR_DMARDL_CLR_MSK   0xffffffc0
 
#define ALT_I2C_DMA_RDLR_DMARDL_RESET   0x0
 
#define ALT_I2C_DMA_RDLR_DMARDL_GET(value)   (((value) & 0x0000003f) >> 0)
 
#define ALT_I2C_DMA_RDLR_DMARDL_SET(value)   (((value) << 0) & 0x0000003f)
 

Data Structures

struct  ALT_I2C_DMA_RDLR_s
 

Macros

#define ALT_I2C_DMA_RDLR_OFST   0x90
 
#define ALT_I2C_DMA_RDLR_ADDR(base)   ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_I2C_DMA_RDLR_OFST))
 

Typedefs

typedef struct ALT_I2C_DMA_RDLR_s ALT_I2C_DMA_RDLR_t
 

Data Structure Documentation

struct ALT_I2C_DMA_RDLR_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_RDLR.

Data Fields
uint32_t dmardl: 6 Receive Data Level Bits
uint32_t __pad0__: 26 UNDEFINED

Macro Definitions

#define ALT_I2C_DMA_RDLR_DMARDL_LSB   0

The Least Significant Bit (LSB) position of the ALT_I2C_DMA_RDLR_DMARDL register field.

#define ALT_I2C_DMA_RDLR_DMARDL_MSB   5

The Most Significant Bit (MSB) position of the ALT_I2C_DMA_RDLR_DMARDL register field.

#define ALT_I2C_DMA_RDLR_DMARDL_WIDTH   6

The width in bits of the ALT_I2C_DMA_RDLR_DMARDL register field.

#define ALT_I2C_DMA_RDLR_DMARDL_SET_MSK   0x0000003f

The mask used to set the ALT_I2C_DMA_RDLR_DMARDL register field value.

#define ALT_I2C_DMA_RDLR_DMARDL_CLR_MSK   0xffffffc0

The mask used to clear the ALT_I2C_DMA_RDLR_DMARDL register field value.

#define ALT_I2C_DMA_RDLR_DMARDL_RESET   0x0

The reset value of the ALT_I2C_DMA_RDLR_DMARDL register field.

#define ALT_I2C_DMA_RDLR_DMARDL_GET (   value)    (((value) & 0x0000003f) >> 0)

Extracts the ALT_I2C_DMA_RDLR_DMARDL field value from a register.

#define ALT_I2C_DMA_RDLR_DMARDL_SET (   value)    (((value) << 0) & 0x0000003f)

Produces a ALT_I2C_DMA_RDLR_DMARDL register field value suitable for setting the register.

#define ALT_I2C_DMA_RDLR_OFST   0x90

The byte offset of the ALT_I2C_DMA_RDLR register from the beginning of the component.

#define ALT_I2C_DMA_RDLR_ADDR (   base)    ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_I2C_DMA_RDLR_OFST))

The address of the ALT_I2C_DMA_RDLR register.

Typedef Documentation

The typedef declaration for register ALT_I2C_DMA_RDLR.