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Altera SoCAL
16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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DMA Addressing.
Register Layout
Bits | Access | Reset | Description |
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[31:0] | RW | Unknown | DMA Address |
Field : DMA Address - diepdma1 | |
Holds the start address of the external memory for storing or fetching endpoint data. for control endpoints, this field stores control OUT data packets as well as SETUP transaction data packets. When more than three SETUP packets are received back-to-back, the SETUP data packet in the memory is overwritten. This register is incremented on every AHB transaction. The application can give only a DWORD-aligned address. When Scatter/Gather DMA mode is not enabled, the application programs the start address value in this field. When Scatter/Gather DMA mode is enabled, this field indicates the base pointer for the descriptor list. Field Access Macros: | |
#define | ALT_USB_DEV_DIEPDMA1_DIEPDMA1_LSB 0 |
#define | ALT_USB_DEV_DIEPDMA1_DIEPDMA1_MSB 31 |
#define | ALT_USB_DEV_DIEPDMA1_DIEPDMA1_WIDTH 32 |
#define | ALT_USB_DEV_DIEPDMA1_DIEPDMA1_SET_MSK 0xffffffff |
#define | ALT_USB_DEV_DIEPDMA1_DIEPDMA1_CLR_MSK 0x00000000 |
#define | ALT_USB_DEV_DIEPDMA1_DIEPDMA1_RESET 0x0 |
#define | ALT_USB_DEV_DIEPDMA1_DIEPDMA1_GET(value) (((value) & 0xffffffff) >> 0) |
#define | ALT_USB_DEV_DIEPDMA1_DIEPDMA1_SET(value) (((value) << 0) & 0xffffffff) |
Data Structures | |
struct | ALT_USB_DEV_DIEPDMA1_s |
Macros | |
#define | ALT_USB_DEV_DIEPDMA1_OFST 0x134 |
#define | ALT_USB_DEV_DIEPDMA1_ADDR(base) ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_USB_DEV_DIEPDMA1_OFST)) |
Typedefs | |
typedef struct ALT_USB_DEV_DIEPDMA1_s | ALT_USB_DEV_DIEPDMA1_t |
struct ALT_USB_DEV_DIEPDMA1_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_DEV_DIEPDMA1.
Data Fields | ||
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uint32_t | diepdma1: 32 | DMA Address |
#define ALT_USB_DEV_DIEPDMA1_DIEPDMA1_LSB 0 |
The Least Significant Bit (LSB) position of the ALT_USB_DEV_DIEPDMA1_DIEPDMA1 register field.
#define ALT_USB_DEV_DIEPDMA1_DIEPDMA1_MSB 31 |
The Most Significant Bit (MSB) position of the ALT_USB_DEV_DIEPDMA1_DIEPDMA1 register field.
#define ALT_USB_DEV_DIEPDMA1_DIEPDMA1_WIDTH 32 |
The width in bits of the ALT_USB_DEV_DIEPDMA1_DIEPDMA1 register field.
#define ALT_USB_DEV_DIEPDMA1_DIEPDMA1_SET_MSK 0xffffffff |
The mask used to set the ALT_USB_DEV_DIEPDMA1_DIEPDMA1 register field value.
#define ALT_USB_DEV_DIEPDMA1_DIEPDMA1_CLR_MSK 0x00000000 |
The mask used to clear the ALT_USB_DEV_DIEPDMA1_DIEPDMA1 register field value.
#define ALT_USB_DEV_DIEPDMA1_DIEPDMA1_RESET 0x0 |
The reset value of the ALT_USB_DEV_DIEPDMA1_DIEPDMA1 register field is UNKNOWN.
#define ALT_USB_DEV_DIEPDMA1_DIEPDMA1_GET | ( | value | ) | (((value) & 0xffffffff) >> 0) |
Extracts the ALT_USB_DEV_DIEPDMA1_DIEPDMA1 field value from a register.
#define ALT_USB_DEV_DIEPDMA1_DIEPDMA1_SET | ( | value | ) | (((value) << 0) & 0xffffffff) |
Produces a ALT_USB_DEV_DIEPDMA1_DIEPDMA1 register field value suitable for setting the register.
#define ALT_USB_DEV_DIEPDMA1_OFST 0x134 |
The byte offset of the ALT_USB_DEV_DIEPDMA1 register from the beginning of the component.
#define ALT_USB_DEV_DIEPDMA1_ADDR | ( | base | ) | ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_USB_DEV_DIEPDMA1_OFST)) |
The address of the ALT_USB_DEV_DIEPDMA1 register.
typedef struct ALT_USB_DEV_DIEPDMA1_s ALT_USB_DEV_DIEPDMA1_t |
The typedef declaration for register ALT_USB_DEV_DIEPDMA1.