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Altera SoCAL
16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Shadow RCVR Trigger
Register Layout
Bits | Access | Reset | Description |
---|---|---|---|
[1:0] | RW | 0x0 | ALT_UART_SRT_SRT |
[31:2] | R | 0x0 | ALT_UART_SRT_RSVD_SRT_31TO2 |
Field : srt | ||||||||||||||||
Shadow RCVR Trigger. This is a shadow register for the RCVR trigger bits (FCR[7:6]). This can be used to remove the burden of having to store the previously written value to the FCR in memory and having to mask this value so that only the RCVR trigger bit gets updated. This is used to select the trigger level in the receiver FIFO at which the Received Data Available Interrupt will be generated. It also determines when the dma_rx_req_n signal will be asserted when DMA Mode (FCR[3]) is set to one. The following trigger levels are supported: 00 = 1 character in the FIFO 01 = FIFO � full 10 = FIFO � full 11 = FIFO 2 less than full Field Enumeration Values:
Field Access Macros: | ||||||||||||||||
#define | ALT_UART_SRT_SRT_E_ONECHAR 0x0 | |||||||||||||||
#define | ALT_UART_SRT_SRT_E_QUARTERFULL 0x1 | |||||||||||||||
#define | ALT_UART_SRT_SRT_E_HALFFULL 0x2 | |||||||||||||||
#define | ALT_UART_SRT_SRT_E_FULLLESS2 0x3 | |||||||||||||||
#define | ALT_UART_SRT_SRT_LSB 0 | |||||||||||||||
#define | ALT_UART_SRT_SRT_MSB 1 | |||||||||||||||
#define | ALT_UART_SRT_SRT_WIDTH 2 | |||||||||||||||
#define | ALT_UART_SRT_SRT_SET_MSK 0x00000003 | |||||||||||||||
#define | ALT_UART_SRT_SRT_CLR_MSK 0xfffffffc | |||||||||||||||
#define | ALT_UART_SRT_SRT_RESET 0x0 | |||||||||||||||
#define | ALT_UART_SRT_SRT_GET(value) (((value) & 0x00000003) >> 0) | |||||||||||||||
#define | ALT_UART_SRT_SRT_SET(value) (((value) << 0) & 0x00000003) | |||||||||||||||
Field : rsvd_srt_31to2 | |
Reserved bits [31:2] - Read Only Field Access Macros: | |
#define | ALT_UART_SRT_RSVD_SRT_31TO2_LSB 2 |
#define | ALT_UART_SRT_RSVD_SRT_31TO2_MSB 31 |
#define | ALT_UART_SRT_RSVD_SRT_31TO2_WIDTH 30 |
#define | ALT_UART_SRT_RSVD_SRT_31TO2_SET_MSK 0xfffffffc |
#define | ALT_UART_SRT_RSVD_SRT_31TO2_CLR_MSK 0x00000003 |
#define | ALT_UART_SRT_RSVD_SRT_31TO2_RESET 0x0 |
#define | ALT_UART_SRT_RSVD_SRT_31TO2_GET(value) (((value) & 0xfffffffc) >> 2) |
#define | ALT_UART_SRT_RSVD_SRT_31TO2_SET(value) (((value) << 2) & 0xfffffffc) |
Data Structures | |
struct | ALT_UART_SRT_s |
Macros | |
#define | ALT_UART_SRT_RESET 0x00000000 |
#define | ALT_UART_SRT_OFST 0x9c |
#define | ALT_UART_SRT_ADDR(base) ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_UART_SRT_OFST)) |
Typedefs | |
typedef struct ALT_UART_SRT_s | ALT_UART_SRT_t |
struct ALT_UART_SRT_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_SRT.
Data Fields | ||
---|---|---|
uint32_t | srt: 2 | ALT_UART_SRT_SRT |
const uint32_t | rsvd_srt_31to2: 30 | ALT_UART_SRT_RSVD_SRT_31TO2 |
#define ALT_UART_SRT_SRT_E_ONECHAR 0x0 |
Enumerated value for register field ALT_UART_SRT_SRT
one character in fifo
#define ALT_UART_SRT_SRT_E_QUARTERFULL 0x1 |
Enumerated value for register field ALT_UART_SRT_SRT
FIFO 1/4 full
#define ALT_UART_SRT_SRT_E_HALFFULL 0x2 |
Enumerated value for register field ALT_UART_SRT_SRT
FIFO 1/2 full
#define ALT_UART_SRT_SRT_E_FULLLESS2 0x3 |
Enumerated value for register field ALT_UART_SRT_SRT
FIFO 2 less than full
#define ALT_UART_SRT_SRT_LSB 0 |
The Least Significant Bit (LSB) position of the ALT_UART_SRT_SRT register field.
#define ALT_UART_SRT_SRT_MSB 1 |
The Most Significant Bit (MSB) position of the ALT_UART_SRT_SRT register field.
#define ALT_UART_SRT_SRT_WIDTH 2 |
The width in bits of the ALT_UART_SRT_SRT register field.
#define ALT_UART_SRT_SRT_SET_MSK 0x00000003 |
The mask used to set the ALT_UART_SRT_SRT register field value.
#define ALT_UART_SRT_SRT_CLR_MSK 0xfffffffc |
The mask used to clear the ALT_UART_SRT_SRT register field value.
#define ALT_UART_SRT_SRT_RESET 0x0 |
The reset value of the ALT_UART_SRT_SRT register field.
#define ALT_UART_SRT_SRT_GET | ( | value | ) | (((value) & 0x00000003) >> 0) |
Extracts the ALT_UART_SRT_SRT field value from a register.
#define ALT_UART_SRT_SRT_SET | ( | value | ) | (((value) << 0) & 0x00000003) |
Produces a ALT_UART_SRT_SRT register field value suitable for setting the register.
#define ALT_UART_SRT_RSVD_SRT_31TO2_LSB 2 |
The Least Significant Bit (LSB) position of the ALT_UART_SRT_RSVD_SRT_31TO2 register field.
#define ALT_UART_SRT_RSVD_SRT_31TO2_MSB 31 |
The Most Significant Bit (MSB) position of the ALT_UART_SRT_RSVD_SRT_31TO2 register field.
#define ALT_UART_SRT_RSVD_SRT_31TO2_WIDTH 30 |
The width in bits of the ALT_UART_SRT_RSVD_SRT_31TO2 register field.
#define ALT_UART_SRT_RSVD_SRT_31TO2_SET_MSK 0xfffffffc |
The mask used to set the ALT_UART_SRT_RSVD_SRT_31TO2 register field value.
#define ALT_UART_SRT_RSVD_SRT_31TO2_CLR_MSK 0x00000003 |
The mask used to clear the ALT_UART_SRT_RSVD_SRT_31TO2 register field value.
#define ALT_UART_SRT_RSVD_SRT_31TO2_RESET 0x0 |
The reset value of the ALT_UART_SRT_RSVD_SRT_31TO2 register field.
#define ALT_UART_SRT_RSVD_SRT_31TO2_GET | ( | value | ) | (((value) & 0xfffffffc) >> 2) |
Extracts the ALT_UART_SRT_RSVD_SRT_31TO2 field value from a register.
#define ALT_UART_SRT_RSVD_SRT_31TO2_SET | ( | value | ) | (((value) << 2) & 0xfffffffc) |
Produces a ALT_UART_SRT_RSVD_SRT_31TO2 register field value suitable for setting the register.
#define ALT_UART_SRT_RESET 0x00000000 |
The reset value of the ALT_UART_SRT register.
#define ALT_UART_SRT_OFST 0x9c |
The byte offset of the ALT_UART_SRT register from the beginning of the component.
#define ALT_UART_SRT_ADDR | ( | base | ) | ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_UART_SRT_OFST)) |
The address of the ALT_UART_SRT register.
typedef struct ALT_UART_SRT_s ALT_UART_SRT_t |
The typedef declaration for register ALT_UART_SRT.