Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : ic_clr_activity

Description

Name: Clear ACTIVITY Interrupt Register

Size: 1 bit

Address Offset: 0x5c

Read/Write Access: Read

Register Layout

Bits Access Reset Description
[0] R 0x0 ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY
[31:1] ??? 0x0 UNDEFINED

Field : clr_activity

Reading this register clears the ACTIVITY

interrupt if the I2C is not active anymore. If the

I2C module is still active on the bus, the ACTIVITY

interrupt bit continues to be set. It is automatically

cleared by hardware if the module is disabled and if

there is no further activity on the bus. The value read

from this register to get status of the ACTIVITY interrupt

(bit 8) of the IC_RAW_INTR_STAT register.

Reset value: 0x0

Field Access Macros:

#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_LSB   0
 
#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_MSB   0
 
#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_WIDTH   1
 
#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_SET_MSK   0x00000001
 
#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_CLR_MSK   0xfffffffe
 
#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_RESET   0x0
 
#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_GET(value)   (((value) & 0x00000001) >> 0)
 
#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_SET(value)   (((value) << 0) & 0x00000001)
 

Data Structures

struct  ALT_I2C_CLR_ACTIVITY_s
 

Macros

#define ALT_I2C_CLR_ACTIVITY_RESET   0x00000000
 
#define ALT_I2C_CLR_ACTIVITY_OFST   0x5c
 
#define ALT_I2C_CLR_ACTIVITY_ADDR(base)   ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_I2C_CLR_ACTIVITY_OFST))
 

Typedefs

typedef struct
ALT_I2C_CLR_ACTIVITY_s 
ALT_I2C_CLR_ACTIVITY_t
 

Data Structure Documentation

struct ALT_I2C_CLR_ACTIVITY_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_I2C_CLR_ACTIVITY.

Data Fields
const uint32_t clr_activity: 1 ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY
uint32_t __pad0__: 31 UNDEFINED

Macro Definitions

#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_LSB   0

The Least Significant Bit (LSB) position of the ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY register field.

#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_MSB   0

The Most Significant Bit (MSB) position of the ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY register field.

#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_WIDTH   1

The width in bits of the ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY register field.

#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_SET_MSK   0x00000001

The mask used to set the ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY register field value.

#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_CLR_MSK   0xfffffffe

The mask used to clear the ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY register field value.

#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_RESET   0x0

The reset value of the ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY register field.

#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_GET (   value)    (((value) & 0x00000001) >> 0)

Extracts the ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY field value from a register.

#define ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY_SET (   value)    (((value) << 0) & 0x00000001)

Produces a ALT_I2C_CLR_ACTIVITY_CLR_ACTIVITY register field value suitable for setting the register.

#define ALT_I2C_CLR_ACTIVITY_RESET   0x00000000

The reset value of the ALT_I2C_CLR_ACTIVITY register.

#define ALT_I2C_CLR_ACTIVITY_OFST   0x5c

The byte offset of the ALT_I2C_CLR_ACTIVITY register from the beginning of the component.

#define ALT_I2C_CLR_ACTIVITY_ADDR (   base)    ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_I2C_CLR_ACTIVITY_OFST))

The address of the ALT_I2C_CLR_ACTIVITY register.

Typedef Documentation

The typedef declaration for register ALT_I2C_CLR_ACTIVITY.