i2c_pkg

Hold I2C shared parameters, FIFO widths, and AXI-Lite typedefs.

Defines controller and target FIFO data widths, the ACQ FIFO entry identifiers, timeout mode, read/write and ACK/NACK encodings, and the axil_req_t / axil_resp_t used by i2c.

`reg_addr_t`

Alias for logic [RegAddrWidth-1:0]

`reg_data_t`

Alias for logic [RegDataWidth-1:0]

`reg_strb_t`

Alias for logic [RegStrbWidth-1:0]

`axil_aw_chan_t`

Packed struct

Table 1. `axil_aw_chan_t`
Field	Type	Description
`addr`	`reg_addr_t`
`prot`	`axi_pkg::prot_t`

`axil_w_chan_t`

Packed struct

Table 2. `axil_w_chan_t`
Field	Type	Description
`data`	`reg_data_t`
`strb`	`reg_strb_t`

`axil_b_chan_t`

Packed struct

Table 3. `axil_b_chan_t`
Field	Type	Description
`resp`	`axi_pkg::resp_t`

`axil_ar_chan_t`

Packed struct

Table 4. `axil_ar_chan_t`
Field	Type	Description
`addr`	`reg_addr_t`
`prot`	`axi_pkg::prot_t`

`axil_r_chan_t`

Packed struct

Table 5. `axil_r_chan_t`
Field	Type	Description
`data`	`reg_data_t`
`resp`	`axi_pkg::resp_t`

`axil_req_t`

Packed struct

Table 6. `axil_req_t`
Field	Type	Description
`aw`	`axil_aw_chan_t`
`aw_valid`	`logic`
`w`	`axil_w_chan_t`
`w_valid`	`logic`
`b_ready`	`logic`
`ar`	`axil_ar_chan_t`
`ar_valid`	`logic`
`r_ready`	`logic`

`axil_resp_t`

Packed struct

Table 7. `axil_resp_t`
Field	Type	Description
`aw_ready`	`logic`
`w_ready`	`logic`
`b`	`axil_b_chan_t`
`b_valid`	`logic`
`ar_ready`	`logic`
`r`	`axil_r_chan_t`
`r_valid`	`logic`

`i2c_acq_byte_id_e`

add more values to this enum without having to widen the ACQ FIFO width.

Enum (logic [I2C_ACQ_BYTE_ID_WIDTH-1:0])

Table 8. `i2c_acq_byte_id_e`
Value	Number	Description
`ACQ_DATA`	3'b000
`ACQ_START`	3'b001
`ACQ_STOP`	3'b010
`ACQ_RESTART`	3'b011	ACQ_NACK means one of two things:
`ACQ_NACK`	3'b100	ACQ_NACK_START means that we were addressed on this item, but we timed
`ACQ_NACK_START`	3'b101	ACQ_NACK_STOP means that we were addressed during the transaction, but we
`ACQ_NACK_STOP`	3'b110

`i2c_timeout_mode_e`

Enum (logic)

Table 9. `i2c_timeout_mode_e`
Value	Number	Description
`STRETCH_TIMEOUT_MODE`	1'b0
`BUS_TIMEOUT_MODE`	1'b1

`rw_e`

Enum (bit)

Table 10. `rw_e`
Value	Number	Description
`WRITE`	1'b0
`READ`	1'b1

`acknack_e`

Enum (bit)

Table 11. `acknack_e`
Value	Number	Description
`ACK`	1'b0
`NACK`	1'b1