Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
 All Data Structures Variables Typedefs Groups
Register : Host Channel 2 DMA Buffer Address Register - hcdmab2

Description

These registers are present only in case of Scatter/Gather DMA. These registers are implemented in RAM instead of flop-based implementation. Holds the current buffer address. This register is updated as and when the data transfer for the corresponding end point is in progress. This register is present only in Scatter/Gather DMA mode. Otherwise this field is reserved.

Register Layout

Bits Access Reset Description
[31:0] RW 0x0 Host Channel 2 DMA Buffer Address

Field : Host Channel 2 DMA Buffer Address - hcdmab2

These registers are present only in case of Scatter/Gather DMA. These registers are implemented in RAM instead of flop-based implementation. Holds the current buffer address. This register is updated as and when the data transfer for the corresponding end point is in progress. This register is present only in Scatter/Gather DMA mode. Otherwise this field is reserved.

Field Access Macros:

#define ALT_USB_HOST_HCDMAB2_HCDMAB2_LSB   0
 
#define ALT_USB_HOST_HCDMAB2_HCDMAB2_MSB   31
 
#define ALT_USB_HOST_HCDMAB2_HCDMAB2_WIDTH   32
 
#define ALT_USB_HOST_HCDMAB2_HCDMAB2_SET_MSK   0xffffffff
 
#define ALT_USB_HOST_HCDMAB2_HCDMAB2_CLR_MSK   0x00000000
 
#define ALT_USB_HOST_HCDMAB2_HCDMAB2_RESET   0x0
 
#define ALT_USB_HOST_HCDMAB2_HCDMAB2_GET(value)   (((value) & 0xffffffff) >> 0)
 
#define ALT_USB_HOST_HCDMAB2_HCDMAB2_SET(value)   (((value) << 0) & 0xffffffff)
 

Data Structures

struct  ALT_USB_HOST_HCDMAB2_s
 

Macros

#define ALT_USB_HOST_HCDMAB2_OFST   0x158
 
#define ALT_USB_HOST_HCDMAB2_ADDR(base)   ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_USB_HOST_HCDMAB2_OFST))
 

Typedefs

typedef struct
ALT_USB_HOST_HCDMAB2_s 
ALT_USB_HOST_HCDMAB2_t
 

Data Structure Documentation

struct ALT_USB_HOST_HCDMAB2_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_USB_HOST_HCDMAB2.

Data Fields
uint32_t hcdmab2: 32 Host Channel 2 DMA Buffer Address

Macro Definitions

#define ALT_USB_HOST_HCDMAB2_HCDMAB2_LSB   0

The Least Significant Bit (LSB) position of the ALT_USB_HOST_HCDMAB2_HCDMAB2 register field.

#define ALT_USB_HOST_HCDMAB2_HCDMAB2_MSB   31

The Most Significant Bit (MSB) position of the ALT_USB_HOST_HCDMAB2_HCDMAB2 register field.

#define ALT_USB_HOST_HCDMAB2_HCDMAB2_WIDTH   32

The width in bits of the ALT_USB_HOST_HCDMAB2_HCDMAB2 register field.

#define ALT_USB_HOST_HCDMAB2_HCDMAB2_SET_MSK   0xffffffff

The mask used to set the ALT_USB_HOST_HCDMAB2_HCDMAB2 register field value.

#define ALT_USB_HOST_HCDMAB2_HCDMAB2_CLR_MSK   0x00000000

The mask used to clear the ALT_USB_HOST_HCDMAB2_HCDMAB2 register field value.

#define ALT_USB_HOST_HCDMAB2_HCDMAB2_RESET   0x0

The reset value of the ALT_USB_HOST_HCDMAB2_HCDMAB2 register field.

#define ALT_USB_HOST_HCDMAB2_HCDMAB2_GET (   value)    (((value) & 0xffffffff) >> 0)

Extracts the ALT_USB_HOST_HCDMAB2_HCDMAB2 field value from a register.

#define ALT_USB_HOST_HCDMAB2_HCDMAB2_SET (   value)    (((value) << 0) & 0xffffffff)

Produces a ALT_USB_HOST_HCDMAB2_HCDMAB2 register field value suitable for setting the register.

#define ALT_USB_HOST_HCDMAB2_OFST   0x158

The byte offset of the ALT_USB_HOST_HCDMAB2 register from the beginning of the component.

#define ALT_USB_HOST_HCDMAB2_ADDR (   base)    ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_USB_HOST_HCDMAB2_OFST))

The address of the ALT_USB_HOST_HCDMAB2 register.

Typedef Documentation

The typedef declaration for register ALT_USB_HOST_HCDMAB2.