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Altera SoCAL
16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Transmit FIFO Read
Register Layout
Bits | Access | Reset | Description |
---|---|---|---|
[7:0] | R | 0x0 | ALT_UART_TFR_TFR |
[31:8] | R | 0x0 | ALT_UART_TFR_RSVD_TFR_31TO8 |
Field : tfr | |
Transmit FIFO Read. These bits are only valid when FIFO access mode is enabled (FAR[0] is set to one). When FIFO's are implemented and enabled, reading this register gives the data at the top of the transmit FIFO. Each consecutive read pops the transmit FIFO and gives the next data value that is currently at the top of the FIFO. When FIFO's are not implemented or not enabled, reading this register gives the data in the THR. Field Access Macros: | |
#define | ALT_UART_TFR_TFR_LSB 0 |
#define | ALT_UART_TFR_TFR_MSB 7 |
#define | ALT_UART_TFR_TFR_WIDTH 8 |
#define | ALT_UART_TFR_TFR_SET_MSK 0x000000ff |
#define | ALT_UART_TFR_TFR_CLR_MSK 0xffffff00 |
#define | ALT_UART_TFR_TFR_RESET 0x0 |
#define | ALT_UART_TFR_TFR_GET(value) (((value) & 0x000000ff) >> 0) |
#define | ALT_UART_TFR_TFR_SET(value) (((value) << 0) & 0x000000ff) |
Field : rsvd_tfr_31to8 | |
Reserved bits [31:8] - Read Only Field Access Macros: | |
#define | ALT_UART_TFR_RSVD_TFR_31TO8_LSB 8 |
#define | ALT_UART_TFR_RSVD_TFR_31TO8_MSB 31 |
#define | ALT_UART_TFR_RSVD_TFR_31TO8_WIDTH 24 |
#define | ALT_UART_TFR_RSVD_TFR_31TO8_SET_MSK 0xffffff00 |
#define | ALT_UART_TFR_RSVD_TFR_31TO8_CLR_MSK 0x000000ff |
#define | ALT_UART_TFR_RSVD_TFR_31TO8_RESET 0x0 |
#define | ALT_UART_TFR_RSVD_TFR_31TO8_GET(value) (((value) & 0xffffff00) >> 8) |
#define | ALT_UART_TFR_RSVD_TFR_31TO8_SET(value) (((value) << 8) & 0xffffff00) |
Data Structures | |
struct | ALT_UART_TFR_s |
Macros | |
#define | ALT_UART_TFR_RESET 0x00000000 |
#define | ALT_UART_TFR_OFST 0x74 |
#define | ALT_UART_TFR_ADDR(base) ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_UART_TFR_OFST)) |
Typedefs | |
typedef struct ALT_UART_TFR_s | ALT_UART_TFR_t |
struct ALT_UART_TFR_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_UART_TFR.
Data Fields | ||
---|---|---|
const uint32_t | tfr: 8 | ALT_UART_TFR_TFR |
const uint32_t | rsvd_tfr_31to8: 24 | ALT_UART_TFR_RSVD_TFR_31TO8 |
#define ALT_UART_TFR_TFR_LSB 0 |
The Least Significant Bit (LSB) position of the ALT_UART_TFR_TFR register field.
#define ALT_UART_TFR_TFR_MSB 7 |
The Most Significant Bit (MSB) position of the ALT_UART_TFR_TFR register field.
#define ALT_UART_TFR_TFR_WIDTH 8 |
The width in bits of the ALT_UART_TFR_TFR register field.
#define ALT_UART_TFR_TFR_SET_MSK 0x000000ff |
The mask used to set the ALT_UART_TFR_TFR register field value.
#define ALT_UART_TFR_TFR_CLR_MSK 0xffffff00 |
The mask used to clear the ALT_UART_TFR_TFR register field value.
#define ALT_UART_TFR_TFR_RESET 0x0 |
The reset value of the ALT_UART_TFR_TFR register field.
#define ALT_UART_TFR_TFR_GET | ( | value | ) | (((value) & 0x000000ff) >> 0) |
Extracts the ALT_UART_TFR_TFR field value from a register.
#define ALT_UART_TFR_TFR_SET | ( | value | ) | (((value) << 0) & 0x000000ff) |
Produces a ALT_UART_TFR_TFR register field value suitable for setting the register.
#define ALT_UART_TFR_RSVD_TFR_31TO8_LSB 8 |
The Least Significant Bit (LSB) position of the ALT_UART_TFR_RSVD_TFR_31TO8 register field.
#define ALT_UART_TFR_RSVD_TFR_31TO8_MSB 31 |
The Most Significant Bit (MSB) position of the ALT_UART_TFR_RSVD_TFR_31TO8 register field.
#define ALT_UART_TFR_RSVD_TFR_31TO8_WIDTH 24 |
The width in bits of the ALT_UART_TFR_RSVD_TFR_31TO8 register field.
#define ALT_UART_TFR_RSVD_TFR_31TO8_SET_MSK 0xffffff00 |
The mask used to set the ALT_UART_TFR_RSVD_TFR_31TO8 register field value.
#define ALT_UART_TFR_RSVD_TFR_31TO8_CLR_MSK 0x000000ff |
The mask used to clear the ALT_UART_TFR_RSVD_TFR_31TO8 register field value.
#define ALT_UART_TFR_RSVD_TFR_31TO8_RESET 0x0 |
The reset value of the ALT_UART_TFR_RSVD_TFR_31TO8 register field.
#define ALT_UART_TFR_RSVD_TFR_31TO8_GET | ( | value | ) | (((value) & 0xffffff00) >> 8) |
Extracts the ALT_UART_TFR_RSVD_TFR_31TO8 field value from a register.
#define ALT_UART_TFR_RSVD_TFR_31TO8_SET | ( | value | ) | (((value) << 8) & 0xffffff00) |
Produces a ALT_UART_TFR_RSVD_TFR_31TO8 register field value suitable for setting the register.
#define ALT_UART_TFR_RESET 0x00000000 |
The reset value of the ALT_UART_TFR register.
#define ALT_UART_TFR_OFST 0x74 |
The byte offset of the ALT_UART_TFR register from the beginning of the component.
#define ALT_UART_TFR_ADDR | ( | base | ) | ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_UART_TFR_OFST)) |
The address of the ALT_UART_TFR register.
typedef struct ALT_UART_TFR_s ALT_UART_TFR_t |
The typedef declaration for register ALT_UART_TFR.