![]() |
Altera SoCAL
16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
|
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 |
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 |
#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 struct ALT_I2C_CLR_ACTIVITY_s ALT_I2C_CLR_ACTIVITY_t |
The typedef declaration for register ALT_I2C_CLR_ACTIVITY.