Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : FIFO Double Byte Register - fifodoublebyte

Description

Writes to the FIFO Double Byte Register write a double byte value to the command FIFO. If the command FIFO is full, the APB write operation is stalled until the command FIFO is not full.

Reads from the Double Byte FIFO Register read a double byte value from the command FIFO. If the command FIFO is empty, the APB read operation is stalled until the command FIFO is not empty.

See the ARM documentation for a description of the read and write values.

The name of this register in ARM documentation is BWFIFO2 for writes and BRFIFO2 for reads.

Register Layout

Bits Access Reset Description
[15:0] RW Unknown Double Byte Value
[31:16] ??? 0x0 UNDEFINED

Field : Double Byte Value - value

Transfers double byte value to/from command FIFO

Field Access Macros:

#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_LSB   0
 
#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_MSB   15
 
#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_WIDTH   16
 
#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_SET_MSK   0x0000ffff
 
#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_CLR_MSK   0xffff0000
 
#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_RESET   0x0
 
#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_GET(value)   (((value) & 0x0000ffff) >> 0)
 
#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_SET(value)   (((value) << 0) & 0x0000ffff)
 

Data Structures

struct  ALT_SCANMGR_FIFODOUBLEBYTE_s
 

Macros

#define ALT_SCANMGR_FIFODOUBLEBYTE_OFST   0x14
 

Typedefs

typedef struct
ALT_SCANMGR_FIFODOUBLEBYTE_s 
ALT_SCANMGR_FIFODOUBLEBYTE_t
 

Data Structure Documentation

struct ALT_SCANMGR_FIFODOUBLEBYTE_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_SCANMGR_FIFODOUBLEBYTE.

Data Fields
uint32_t value: 16 Double Byte Value
uint32_t __pad0__: 16 UNDEFINED

Macro Definitions

#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_LSB   0

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

#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_MSB   15

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

#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_WIDTH   16

The width in bits of the ALT_SCANMGR_FIFODOUBLEBYTE_VALUE register field.

#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_SET_MSK   0x0000ffff

The mask used to set the ALT_SCANMGR_FIFODOUBLEBYTE_VALUE register field value.

#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_CLR_MSK   0xffff0000

The mask used to clear the ALT_SCANMGR_FIFODOUBLEBYTE_VALUE register field value.

#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_RESET   0x0

The reset value of the ALT_SCANMGR_FIFODOUBLEBYTE_VALUE register field is UNKNOWN.

#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_GET (   value)    (((value) & 0x0000ffff) >> 0)

Extracts the ALT_SCANMGR_FIFODOUBLEBYTE_VALUE field value from a register.

#define ALT_SCANMGR_FIFODOUBLEBYTE_VALUE_SET (   value)    (((value) << 0) & 0x0000ffff)

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

#define ALT_SCANMGR_FIFODOUBLEBYTE_OFST   0x14

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

Typedef Documentation

The typedef declaration for register ALT_SCANMGR_FIFODOUBLEBYTE.