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Altera SoCAL
16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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This register controls the amount of time delay (in terms of number of l4_sp_clk clock periods) introduced in the falling edge of SCL, relative to SDA changing, when I2C services a read request in a slave-transmitter operation. The relevant I2C requirement is thd:DAT as detailed in the I2C Bus Specification.
Register Layout
Bits | Access | Reset | Description |
---|---|---|---|
[15:0] | RW | 0x1 | SDA Hold Bit |
[31:16] | ??? | 0x0 | UNDEFINED |
Field : SDA Hold Bit - ic_sda_hold | |
Program to a minimum 0f 300ns. Field Access Macros: | |
#define | ALT_I2C_SDA_HOLD_IC_SDA_HOLD_LSB 0 |
#define | ALT_I2C_SDA_HOLD_IC_SDA_HOLD_MSB 15 |
#define | ALT_I2C_SDA_HOLD_IC_SDA_HOLD_WIDTH 16 |
#define | ALT_I2C_SDA_HOLD_IC_SDA_HOLD_SET_MSK 0x0000ffff |
#define | ALT_I2C_SDA_HOLD_IC_SDA_HOLD_CLR_MSK 0xffff0000 |
#define | ALT_I2C_SDA_HOLD_IC_SDA_HOLD_RESET 0x1 |
#define | ALT_I2C_SDA_HOLD_IC_SDA_HOLD_GET(value) (((value) & 0x0000ffff) >> 0) |
#define | ALT_I2C_SDA_HOLD_IC_SDA_HOLD_SET(value) (((value) << 0) & 0x0000ffff) |
Data Structures | |
struct | ALT_I2C_SDA_HOLD_s |
Macros | |
#define | ALT_I2C_SDA_HOLD_OFST 0x7c |
#define | ALT_I2C_SDA_HOLD_ADDR(base) ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_I2C_SDA_HOLD_OFST)) |
Typedefs | |
typedef struct ALT_I2C_SDA_HOLD_s | ALT_I2C_SDA_HOLD_t |
struct ALT_I2C_SDA_HOLD_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_SDA_HOLD.
Data Fields | ||
---|---|---|
uint32_t | ic_sda_hold: 16 | SDA Hold Bit |
uint32_t | __pad0__: 16 | UNDEFINED |
#define ALT_I2C_SDA_HOLD_IC_SDA_HOLD_LSB 0 |
The Least Significant Bit (LSB) position of the ALT_I2C_SDA_HOLD_IC_SDA_HOLD register field.
#define ALT_I2C_SDA_HOLD_IC_SDA_HOLD_MSB 15 |
The Most Significant Bit (MSB) position of the ALT_I2C_SDA_HOLD_IC_SDA_HOLD register field.
#define ALT_I2C_SDA_HOLD_IC_SDA_HOLD_WIDTH 16 |
The width in bits of the ALT_I2C_SDA_HOLD_IC_SDA_HOLD register field.
#define ALT_I2C_SDA_HOLD_IC_SDA_HOLD_SET_MSK 0x0000ffff |
The mask used to set the ALT_I2C_SDA_HOLD_IC_SDA_HOLD register field value.
#define ALT_I2C_SDA_HOLD_IC_SDA_HOLD_CLR_MSK 0xffff0000 |
The mask used to clear the ALT_I2C_SDA_HOLD_IC_SDA_HOLD register field value.
#define ALT_I2C_SDA_HOLD_IC_SDA_HOLD_RESET 0x1 |
The reset value of the ALT_I2C_SDA_HOLD_IC_SDA_HOLD register field.
#define ALT_I2C_SDA_HOLD_IC_SDA_HOLD_GET | ( | value | ) | (((value) & 0x0000ffff) >> 0) |
Extracts the ALT_I2C_SDA_HOLD_IC_SDA_HOLD field value from a register.
#define ALT_I2C_SDA_HOLD_IC_SDA_HOLD_SET | ( | value | ) | (((value) << 0) & 0x0000ffff) |
Produces a ALT_I2C_SDA_HOLD_IC_SDA_HOLD register field value suitable for setting the register.
#define ALT_I2C_SDA_HOLD_OFST 0x7c |
The byte offset of the ALT_I2C_SDA_HOLD register from the beginning of the component.
#define ALT_I2C_SDA_HOLD_ADDR | ( | base | ) | ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_I2C_SDA_HOLD_OFST)) |
The address of the ALT_I2C_SDA_HOLD register.
typedef struct ALT_I2C_SDA_HOLD_s ALT_I2C_SDA_HOLD_t |
The typedef declaration for register ALT_I2C_SDA_HOLD.