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Altera SoCAL
16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Device IN Endpoint 0 Transfer Size Register
Register Layout
Bits | Access | Reset | Description |
---|---|---|---|
[6:0] | RW | 0x0 | ALT_USB_DEV_DIEPTSIZ0_XFERSIZE |
[18:7] | ??? | 0x0 | UNDEFINED |
[20:19] | RW | 0x0 | ALT_USB_DEV_DIEPTSIZ0_PKTCNT |
[31:21] | ??? | 0x0 | UNDEFINED |
Field : xfersize | |
Transfer Size (XferSize) This field contains the transfer size in bytes for the current endpoint. The transfer size (XferSize) = Sum of buffer sizes across all descriptors in the list for the endpoint. In Buffer DMA, the core only interrupts the application after it has exhausted the transfer size amount of data. The transfer size can be set to the maximum packet size of the endpoint, to be interrupted at the end of each packet. IN Endpoints: The core decrements this field every time a packet from the external memory is written to the TxFIFO. OUT Endpoints: The core decrements this field every time a packet is read from the RxFIFO and written to the external memory. Field Access Macros: | |
#define | ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_LSB 0 |
#define | ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_MSB 6 |
#define | ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_WIDTH 7 |
#define | ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_SET_MSK 0x0000007f |
#define | ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_CLR_MSK 0xffffff80 |
#define | ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_RESET 0x0 |
#define | ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_GET(value) (((value) & 0x0000007f) >> 0) |
#define | ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_SET(value) (((value) << 0) & 0x0000007f) |
Field : pktcnt | |
Packet Count (PktCnt) Indicates the total number of USB packets that constitute the Transfer Size amount of data For endpoint 0. In Endpoints : This field is decremented every time a packet (maximum size or short packet) is read from the TxFIFO. OUT Endpoints: This field is decremented every time a packet (maximum size or short packet) is written to the RxFIFO. Field Access Macros: | |
#define | ALT_USB_DEV_DIEPTSIZ0_PKTCNT_LSB 19 |
#define | ALT_USB_DEV_DIEPTSIZ0_PKTCNT_MSB 20 |
#define | ALT_USB_DEV_DIEPTSIZ0_PKTCNT_WIDTH 2 |
#define | ALT_USB_DEV_DIEPTSIZ0_PKTCNT_SET_MSK 0x00180000 |
#define | ALT_USB_DEV_DIEPTSIZ0_PKTCNT_CLR_MSK 0xffe7ffff |
#define | ALT_USB_DEV_DIEPTSIZ0_PKTCNT_RESET 0x0 |
#define | ALT_USB_DEV_DIEPTSIZ0_PKTCNT_GET(value) (((value) & 0x00180000) >> 19) |
#define | ALT_USB_DEV_DIEPTSIZ0_PKTCNT_SET(value) (((value) << 19) & 0x00180000) |
Data Structures | |
struct | ALT_USB_DEV_DIEPTSIZ0_s |
Macros | |
#define | ALT_USB_DEV_DIEPTSIZ0_RESET 0x00000000 |
#define | ALT_USB_DEV_DIEPTSIZ0_OFST 0x110 |
#define | ALT_USB_DEV_DIEPTSIZ0_ADDR(base) ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_USB_DEV_DIEPTSIZ0_OFST)) |
Typedefs | |
typedef struct ALT_USB_DEV_DIEPTSIZ0_s | ALT_USB_DEV_DIEPTSIZ0_t |
struct ALT_USB_DEV_DIEPTSIZ0_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_DIEPTSIZ0.
Data Fields | ||
---|---|---|
uint32_t | xfersize: 7 | ALT_USB_DEV_DIEPTSIZ0_XFERSIZE |
uint32_t | __pad0__: 12 | UNDEFINED |
uint32_t | pktcnt: 2 | ALT_USB_DEV_DIEPTSIZ0_PKTCNT |
uint32_t | __pad1__: 11 | UNDEFINED |
#define ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_LSB 0 |
The Least Significant Bit (LSB) position of the ALT_USB_DEV_DIEPTSIZ0_XFERSIZE register field.
#define ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_MSB 6 |
The Most Significant Bit (MSB) position of the ALT_USB_DEV_DIEPTSIZ0_XFERSIZE register field.
#define ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_WIDTH 7 |
The width in bits of the ALT_USB_DEV_DIEPTSIZ0_XFERSIZE register field.
#define ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_SET_MSK 0x0000007f |
The mask used to set the ALT_USB_DEV_DIEPTSIZ0_XFERSIZE register field value.
#define ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_CLR_MSK 0xffffff80 |
The mask used to clear the ALT_USB_DEV_DIEPTSIZ0_XFERSIZE register field value.
#define ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_RESET 0x0 |
The reset value of the ALT_USB_DEV_DIEPTSIZ0_XFERSIZE register field.
#define ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_GET | ( | value | ) | (((value) & 0x0000007f) >> 0) |
Extracts the ALT_USB_DEV_DIEPTSIZ0_XFERSIZE field value from a register.
#define ALT_USB_DEV_DIEPTSIZ0_XFERSIZE_SET | ( | value | ) | (((value) << 0) & 0x0000007f) |
Produces a ALT_USB_DEV_DIEPTSIZ0_XFERSIZE register field value suitable for setting the register.
#define ALT_USB_DEV_DIEPTSIZ0_PKTCNT_LSB 19 |
The Least Significant Bit (LSB) position of the ALT_USB_DEV_DIEPTSIZ0_PKTCNT register field.
#define ALT_USB_DEV_DIEPTSIZ0_PKTCNT_MSB 20 |
The Most Significant Bit (MSB) position of the ALT_USB_DEV_DIEPTSIZ0_PKTCNT register field.
#define ALT_USB_DEV_DIEPTSIZ0_PKTCNT_WIDTH 2 |
The width in bits of the ALT_USB_DEV_DIEPTSIZ0_PKTCNT register field.
#define ALT_USB_DEV_DIEPTSIZ0_PKTCNT_SET_MSK 0x00180000 |
The mask used to set the ALT_USB_DEV_DIEPTSIZ0_PKTCNT register field value.
#define ALT_USB_DEV_DIEPTSIZ0_PKTCNT_CLR_MSK 0xffe7ffff |
The mask used to clear the ALT_USB_DEV_DIEPTSIZ0_PKTCNT register field value.
#define ALT_USB_DEV_DIEPTSIZ0_PKTCNT_RESET 0x0 |
The reset value of the ALT_USB_DEV_DIEPTSIZ0_PKTCNT register field.
#define ALT_USB_DEV_DIEPTSIZ0_PKTCNT_GET | ( | value | ) | (((value) & 0x00180000) >> 19) |
Extracts the ALT_USB_DEV_DIEPTSIZ0_PKTCNT field value from a register.
#define ALT_USB_DEV_DIEPTSIZ0_PKTCNT_SET | ( | value | ) | (((value) << 19) & 0x00180000) |
Produces a ALT_USB_DEV_DIEPTSIZ0_PKTCNT register field value suitable for setting the register.
#define ALT_USB_DEV_DIEPTSIZ0_RESET 0x00000000 |
The reset value of the ALT_USB_DEV_DIEPTSIZ0 register.
#define ALT_USB_DEV_DIEPTSIZ0_OFST 0x110 |
The byte offset of the ALT_USB_DEV_DIEPTSIZ0 register from the beginning of the component.
#define ALT_USB_DEV_DIEPTSIZ0_ADDR | ( | base | ) | ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_USB_DEV_DIEPTSIZ0_OFST)) |
The address of the ALT_USB_DEV_DIEPTSIZ0 register.
typedef struct ALT_USB_DEV_DIEPTSIZ0_s ALT_USB_DEV_DIEPTSIZ0_t |
The typedef declaration for register ALT_USB_DEV_DIEPTSIZ0.