Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : Transmit FIFO Level - tfl

Description

This register is used to specify the number of data entries in the Tx FIFO. Status Bits in USR register monitor the FIFO state.

Register Layout

Bits Access Reset Description
[4:0] R 0x0 Transmit FIFO Level
[31:5] ??? 0x0 UNDEFINED

Field : Transmit FIFO Level - tfl

This indicates the number of data entries in the transmit FIFO.

Field Access Macros:

#define ALT_UART_TFL_TFL_LSB   0
 
#define ALT_UART_TFL_TFL_MSB   4
 
#define ALT_UART_TFL_TFL_WIDTH   5
 
#define ALT_UART_TFL_TFL_SET_MSK   0x0000001f
 
#define ALT_UART_TFL_TFL_CLR_MSK   0xffffffe0
 
#define ALT_UART_TFL_TFL_RESET   0x0
 
#define ALT_UART_TFL_TFL_GET(value)   (((value) & 0x0000001f) >> 0)
 
#define ALT_UART_TFL_TFL_SET(value)   (((value) << 0) & 0x0000001f)
 

Data Structures

struct  ALT_UART_TFL_s
 

Macros

#define ALT_UART_TFL_OFST   0x80
 
#define ALT_UART_TFL_ADDR(base)   ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_UART_TFL_OFST))
 

Typedefs

typedef struct ALT_UART_TFL_s ALT_UART_TFL_t
 

Data Structure Documentation

struct ALT_UART_TFL_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_TFL.

Data Fields
const uint32_t tfl: 5 Transmit FIFO Level
uint32_t __pad0__: 27 UNDEFINED

Macro Definitions

#define ALT_UART_TFL_TFL_LSB   0

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

#define ALT_UART_TFL_TFL_MSB   4

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

#define ALT_UART_TFL_TFL_WIDTH   5

The width in bits of the ALT_UART_TFL_TFL register field.

#define ALT_UART_TFL_TFL_SET_MSK   0x0000001f

The mask used to set the ALT_UART_TFL_TFL register field value.

#define ALT_UART_TFL_TFL_CLR_MSK   0xffffffe0

The mask used to clear the ALT_UART_TFL_TFL register field value.

#define ALT_UART_TFL_TFL_RESET   0x0

The reset value of the ALT_UART_TFL_TFL register field.

#define ALT_UART_TFL_TFL_GET (   value)    (((value) & 0x0000001f) >> 0)

Extracts the ALT_UART_TFL_TFL field value from a register.

#define ALT_UART_TFL_TFL_SET (   value)    (((value) << 0) & 0x0000001f)

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

#define ALT_UART_TFL_OFST   0x80

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

#define ALT_UART_TFL_ADDR (   base)    ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_UART_TFL_OFST))

The address of the ALT_UART_TFL register.

Typedef Documentation

The typedef declaration for register ALT_UART_TFL.