Entity: cordic_sincos_engine
- File: cordic_sincos_engine.vhd
Diagram
Description
Standard library. Sine and cosine cordic.
Ports
| Port name | Direction | Type | Description |
|---|---|---|---|
| clk | in | std_logic | Clock. |
| dv_in | in | std_logic | Data valid input. |
| data_in | in | std_logic_vector (19 downto 0) | Angle in radians Q2.17 format [-pi,pi] |
| cos_out | out | std_logic_vector (19 downto 0) | Cosine. |
| sin_out | out | std_logic_vector (19 downto 0) | Sine. |
| dv_out | out | std_logic | Data valid output. |
Signals
| Name | Type | Description |
|---|---|---|
| r0_data_in | std_logic_vector(c_SIZE_INPUT-1 downto 0) | |
| r0_dv | std_logic | |
| r1_signCos | std_logic | |
| r1_input | signed(c_SIZE_INPUT-1 downto 0) | |
| r1_dv | std_logic | |
| r2_input | typea_input | |
| r2_x | typea_input | |
| r2b_x_bis | typea_input | |
| r2_y | typea_input | |
| r2b_y_bis | typea_input | |
| r2_a | typea_input | |
| r2_signCos | std_logic_vector(c_SIZE_INPUT-1 downto 0) | |
| r2_shift_dv | std_logic_vector(c_SIZE_INPUT-1 downto 0) | |
| r3_sin | signed(2*c_SIZE_INPUT-c_SIZE_INT-1 downto 0) | |
| r3_cos | signed(2*c_SIZE_INPUT-c_SIZE_INT-1 downto 0) | |
| r3b_sin | signed(c_SIZE_INPUT-1 downto 0) | |
| r3b_cos | signed(c_SIZE_INPUT-1 downto 0) | |
| r3_signCos | std_logic | |
| r3_dv | std_logic | |
| r4_sin | signed(c_SIZE_INPUT-1 downto 0) | |
| r4_cos | signed(c_SIZE_INPUT-1 downto 0) | |
| r4_dv | std_logic |
Constants
| Name | Type | Value | Description |
|---|---|---|---|
| c_SIZE_INPUT | integer | 20 | |
| c_SIZE_INT | integer | 2 | |
| c_SIZE_DECIM | integer | 17 | |
| c_PI_HALF | signed(c_SIZE_INPUT-1 downto 0) | "00110010010000111111" | |
| c_PI_HALF_NEG | signed(c_SIZE_INPUT-1 downto 0) | "11001101101111000001" | |
| c_PI | signed(c_SIZE_INPUT-1 downto 0) | "01100100100001111110" | |
| c_PI_NEG | signed(c_SIZE_INPUT-1 downto 0) | "10011011011110000010" | |
| X_INIT | signed(c_SIZE_INPUT-1 downto 0) | "00100000000000000000" | |
| Y_INIT | signed(c_SIZE_INPUT-1 downto 0) | "00000000000000000000" | |
| X_BIS_INIT | signed(c_SIZE_INPUT-1 downto 0) | "00100000000000000000" | |
| Y_BIS_INIT | signed(c_SIZE_INPUT-1 downto 0) | "00000000000000000000" | |
| c_NUM_STAGES | integer | 16 | |
| r2_ang | typea_inputa | ( "011001001000011111", "001110110101100011", "000111110101101101", "000011111110101011", "000001111111110101", "000000111111111110", "000000011111111111", "000000001111111111", "000000000111111111", "000000000011111111", "000000000001111111", "000000000000111111", "000000000000011111", "000000000000001111", "000000000000000111", "000000000000000011" ) |
|
| c_CORRECTION | signed(c_SIZE_INPUT-c_SIZE_INT-1 downto 0) | "010011011011101001" |
Types
| Name | Type | Description |
|---|---|---|
| typea_input | ||
| typea_inputa |
Processes
- r0_reg_input: ( clk )
- r1_adapter_input: ( clk )
- r2_shift: ( clk )
- r2_start_cordic: ( clk )
- r3_cordic_correction: ( clk )
- r4_adapter_output: ( clk )