Module rp2040_pac::i2c0::ic_con

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Expand description

I2C Control Register. This register can be written only when the DW_apb_i2c is disabled, which corresponds to the IC_ENABLE[0] register being set to 0. Writes at other times have no effect.

Read/Write Access: - bit 10 is read only. - bit 11 is read only - bit 16 is read only - bit 17 is read only - bits 18 and 19 are read only.

Structs§

  • IC_CON_SPEC
    I2C Control Register. This register can be written only when the DW_apb_i2c is disabled, which corresponds to the IC_ENABLE[0] register being set to 0. Writes at other times have no effect.

Enums§

  • IC_10BITADDR_MASTER_A
    Controls whether the DW_apb_i2c starts its transfers in 7- or 10-bit addressing mode when acting as a master. - 0: 7-bit addressing - 1: 10-bit addressing
  • IC_10BITADDR_SLAVE_A
    When acting as a slave, this bit controls whether the DW_apb_i2c responds to 7- or 10-bit addresses. - 0: 7-bit addressing. The DW_apb_i2c ignores transactions that involve 10-bit addressing; for 7-bit addressing, only the lower 7 bits of the IC_SAR register are compared. - 1: 10-bit addressing. The DW_apb_i2c responds to only 10-bit addressing transfers that match the full 10 bits of the IC_SAR register.
  • IC_RESTART_EN_A
    Determines whether RESTART conditions may be sent when acting as a master. Some older slaves do not support handling RESTART conditions; however, RESTART conditions are used in several DW_apb_i2c operations. When RESTART is disabled, the master is prohibited from performing the following functions: - Sending a START BYTE - Performing any high-speed mode operation - High-speed mode operation - Performing direction changes in combined format mode - Performing a read operation with a 10-bit address By replacing RESTART condition followed by a STOP and a subsequent START condition, split operations are broken down into multiple DW_apb_i2c transfers. If the above operations are performed, it will result in setting bit 6 (TX_ABRT) of the IC_RAW_INTR_STAT register.
  • IC_SLAVE_DISABLE_A
    This bit controls whether I2C has its slave disabled, which means once the presetn signal is applied, then this bit is set and the slave is disabled.
  • MASTER_MODE_A
    This bit controls whether the DW_apb_i2c master is enabled.
  • RX_FIFO_FULL_HLD_CTRL_A
    This bit controls whether DW_apb_i2c should hold the bus when the Rx FIFO is physically full to its RX_BUFFER_DEPTH, as described in the IC_RX_FULL_HLD_BUS_EN parameter.
  • SPEED_A
    These bits control at which speed the DW_apb_i2c operates; its setting is relevant only if one is operating the DW_apb_i2c in master mode. Hardware protects against illegal values being programmed by software. These bits must be programmed appropriately for slave mode also, as it is used to capture correct value of spike filter as per the speed mode.
  • STOP_DET_IFADDRESSED_A
    In slave mode: - 1’b1: issues the STOP_DET interrupt only when it is addressed. - 1’b0: issues the STOP_DET irrespective of whether it’s addressed or not. Reset value: 0x0
  • TX_EMPTY_CTRL_A
    This bit controls the generation of the TX_EMPTY interrupt, as described in the IC_RAW_INTR_STAT register.

Type Aliases§

  • IC_10BITADDR_MASTER_R
    Field IC_10BITADDR_MASTER reader - Controls whether the DW_apb_i2c starts its transfers in 7- or 10-bit addressing mode when acting as a master. - 0: 7-bit addressing - 1: 10-bit addressing
  • IC_10BITADDR_MASTER_W
    Field IC_10BITADDR_MASTER writer - Controls whether the DW_apb_i2c starts its transfers in 7- or 10-bit addressing mode when acting as a master. - 0: 7-bit addressing - 1: 10-bit addressing
  • IC_10BITADDR_SLAVE_R
    Field IC_10BITADDR_SLAVE reader - When acting as a slave, this bit controls whether the DW_apb_i2c responds to 7- or 10-bit addresses. - 0: 7-bit addressing. The DW_apb_i2c ignores transactions that involve 10-bit addressing; for 7-bit addressing, only the lower 7 bits of the IC_SAR register are compared. - 1: 10-bit addressing. The DW_apb_i2c responds to only 10-bit addressing transfers that match the full 10 bits of the IC_SAR register.
  • IC_10BITADDR_SLAVE_W
    Field IC_10BITADDR_SLAVE writer - When acting as a slave, this bit controls whether the DW_apb_i2c responds to 7- or 10-bit addresses. - 0: 7-bit addressing. The DW_apb_i2c ignores transactions that involve 10-bit addressing; for 7-bit addressing, only the lower 7 bits of the IC_SAR register are compared. - 1: 10-bit addressing. The DW_apb_i2c responds to only 10-bit addressing transfers that match the full 10 bits of the IC_SAR register.
  • IC_RESTART_EN_R
    Field IC_RESTART_EN reader - Determines whether RESTART conditions may be sent when acting as a master. Some older slaves do not support handling RESTART conditions; however, RESTART conditions are used in several DW_apb_i2c operations. When RESTART is disabled, the master is prohibited from performing the following functions: - Sending a START BYTE - Performing any high-speed mode operation - High-speed mode operation - Performing direction changes in combined format mode - Performing a read operation with a 10-bit address By replacing RESTART condition followed by a STOP and a subsequent START condition, split operations are broken down into multiple DW_apb_i2c transfers. If the above operations are performed, it will result in setting bit 6 (TX_ABRT) of the IC_RAW_INTR_STAT register.
  • IC_RESTART_EN_W
    Field IC_RESTART_EN writer - Determines whether RESTART conditions may be sent when acting as a master. Some older slaves do not support handling RESTART conditions; however, RESTART conditions are used in several DW_apb_i2c operations. When RESTART is disabled, the master is prohibited from performing the following functions: - Sending a START BYTE - Performing any high-speed mode operation - High-speed mode operation - Performing direction changes in combined format mode - Performing a read operation with a 10-bit address By replacing RESTART condition followed by a STOP and a subsequent START condition, split operations are broken down into multiple DW_apb_i2c transfers. If the above operations are performed, it will result in setting bit 6 (TX_ABRT) of the IC_RAW_INTR_STAT register.
  • IC_SLAVE_DISABLE_R
    Field IC_SLAVE_DISABLE reader - This bit controls whether I2C has its slave disabled, which means once the presetn signal is applied, then this bit is set and the slave is disabled.
  • IC_SLAVE_DISABLE_W
    Field IC_SLAVE_DISABLE writer - This bit controls whether I2C has its slave disabled, which means once the presetn signal is applied, then this bit is set and the slave is disabled.
  • MASTER_MODE_R
    Field MASTER_MODE reader - This bit controls whether the DW_apb_i2c master is enabled.
  • MASTER_MODE_W
    Field MASTER_MODE writer - This bit controls whether the DW_apb_i2c master is enabled.
  • R
    Register IC_CON reader
  • RX_FIFO_FULL_HLD_CTRL_R
    Field RX_FIFO_FULL_HLD_CTRL reader - This bit controls whether DW_apb_i2c should hold the bus when the Rx FIFO is physically full to its RX_BUFFER_DEPTH, as described in the IC_RX_FULL_HLD_BUS_EN parameter.
  • RX_FIFO_FULL_HLD_CTRL_W
    Field RX_FIFO_FULL_HLD_CTRL writer - This bit controls whether DW_apb_i2c should hold the bus when the Rx FIFO is physically full to its RX_BUFFER_DEPTH, as described in the IC_RX_FULL_HLD_BUS_EN parameter.
  • SPEED_R
    Field SPEED reader - These bits control at which speed the DW_apb_i2c operates; its setting is relevant only if one is operating the DW_apb_i2c in master mode. Hardware protects against illegal values being programmed by software. These bits must be programmed appropriately for slave mode also, as it is used to capture correct value of spike filter as per the speed mode.
  • SPEED_W
    Field SPEED writer - These bits control at which speed the DW_apb_i2c operates; its setting is relevant only if one is operating the DW_apb_i2c in master mode. Hardware protects against illegal values being programmed by software. These bits must be programmed appropriately for slave mode also, as it is used to capture correct value of spike filter as per the speed mode.
  • STOP_DET_IFADDRESSED_R
    Field STOP_DET_IFADDRESSED reader - In slave mode: - 1’b1: issues the STOP_DET interrupt only when it is addressed. - 1’b0: issues the STOP_DET irrespective of whether it’s addressed or not. Reset value: 0x0
  • STOP_DET_IFADDRESSED_W
    Field STOP_DET_IFADDRESSED writer - In slave mode: - 1’b1: issues the STOP_DET interrupt only when it is addressed. - 1’b0: issues the STOP_DET irrespective of whether it’s addressed or not. Reset value: 0x0
  • STOP_DET_IF_MASTER_ACTIVE_R
    Field STOP_DET_IF_MASTER_ACTIVE reader - Master issues the STOP_DET interrupt irrespective of whether master is active or not
  • TX_EMPTY_CTRL_R
    Field TX_EMPTY_CTRL reader - This bit controls the generation of the TX_EMPTY interrupt, as described in the IC_RAW_INTR_STAT register.
  • TX_EMPTY_CTRL_W
    Field TX_EMPTY_CTRL writer - This bit controls the generation of the TX_EMPTY interrupt, as described in the IC_RAW_INTR_STAT register.
  • W
    Register IC_CON writer