// Copyright 2017-2018 Espressif Systems (Shanghai) PTE LTD // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #ifndef _SOC_I2S_STRUCT_H_ #define _SOC_I2S_STRUCT_H_ #ifdef __cplusplus extern "C" { #endif typedef volatile struct { uint32_t reserved_0; uint32_t reserved_4; union { struct { uint32_t tx_reset: 1; /*Set this bit to reset transmitter*/ uint32_t rx_reset: 1; /*Set this bit to reset receiver*/ uint32_t tx_fifo_reset: 1; /*Set this bit to reset txFIFO*/ uint32_t rx_fifo_reset: 1; /*Set this bit to reset rxFIFO*/ uint32_t tx_start: 1; /*Set this bit to start transmitting data*/ uint32_t rx_start: 1; /*Set this bit to start receiving data*/ uint32_t tx_slave_mod: 1; /*Set this bit to enable slave transmitter mode*/ uint32_t rx_slave_mod: 1; /*Set this bit to enable slave receiver mode*/ uint32_t tx_right_first: 1; /*Set this bit to transmit right channel data first*/ uint32_t rx_right_first: 1; /*Set this bit to receive right channel data first*/ uint32_t tx_msb_shift: 1; /*Set this bit to enable transmitter in Phillips standard mode*/ uint32_t rx_msb_shift: 1; /*Set this bit to enable receiver in Phillips standard mode*/ uint32_t tx_short_sync: 1; /*Set this bit to enable transmitter in PCM standard mode*/ uint32_t rx_short_sync: 1; /*Set this bit to enable receiver in PCM standard mode*/ uint32_t tx_mono: 1; /*Set this bit to enable transmitter in mono mode*/ uint32_t rx_mono: 1; /*Set this bit to enable receiver in mono mode*/ uint32_t tx_msb_right: 1; /*Set this bit to place right channel data at the MSB in the transmit FIFO.*/ uint32_t rx_msb_right: 1; /*Set this bit to place right channel data at the MSB in the receive FIFO.*/ uint32_t tx_lsb_first_dma: 1; /*1:the data in DMA/APB transform from low bits*/ uint32_t rx_lsb_first_dma: 1; /*1:the data in DMA/APB transform from low bits*/ uint32_t sig_loopback: 1; /*Enable signal loopback mode with transmitter module and receiver module sharing the same WS and BCK signals.*/ uint32_t tx_fifo_reset_st: 1; /*1:i2s_tx_fifo reset is not ok 0:i2s_tx_fifo_reset is ok*/ uint32_t rx_fifo_reset_st: 1; /*1:i2s_rx_fifo_reset is not ok 0:i2s_rx_fifo reset is ok*/ uint32_t tx_reset_st: 1; /*1: i2s_tx_reset is not ok 0: i2s_tx_reset is ok*/ uint32_t tx_dma_equal: 1; /*1:data in left channel is equal to data in right channel*/ uint32_t rx_dma_equal: 1; /*1:data in left channel is equal to data in right channel*/ uint32_t pre_req_en: 1; /*set this bit to enable i2s to prepare data earlier*/ uint32_t tx_big_endian: 1; uint32_t rx_big_endian: 1; uint32_t rx_reset_st: 1; uint32_t reserved30: 2; }; uint32_t val; } conf; union { struct { uint32_t rx_take_data: 1; /*The raw interrupt status bit for the i2s_rx_take_data_int interrupt*/ uint32_t tx_put_data: 1; /*The raw interrupt status bit for the i2s_tx_put_data_int interrupt*/ uint32_t rx_wfull: 1; /*The raw interrupt status bit for the i2s_rx_wfull_int interrupt*/ uint32_t rx_rempty: 1; /*The raw interrupt status bit for the i2s_rx_rempty_int interrupt*/ uint32_t tx_wfull: 1; /*The raw interrupt status bit for the i2s_tx_wfull_int interrupt*/ uint32_t tx_rempty: 1; /*The raw interrupt status bit for the i2s_tx_rempty_int interrupt*/ uint32_t rx_hung: 1; /*The raw interrupt status bit for the i2s_rx_hung_int interrupt*/ uint32_t tx_hung: 1; /*The raw interrupt status bit for the i2s_tx_hung_int interrupt*/ uint32_t in_done: 1; /*The raw interrupt status bit for the i2s_in_done_int interrupt*/ uint32_t in_suc_eof: 1; /*The raw interrupt status bit for the i2s_in_suc_eof_int interrupt*/ uint32_t in_err_eof: 1; /*don't use*/ uint32_t out_done: 1; /*The raw interrupt status bit for the i2s_out_done_int interrupt*/ uint32_t out_eof: 1; /*The raw interrupt status bit for the i2s_out_eof_int interrupt*/ uint32_t in_dscr_err: 1; /*The raw interrupt status bit for the i2s_in_dscr_err_int interrupt*/ uint32_t out_dscr_err: 1; /*The raw interrupt status bit for the i2s_out_dscr_err_int interrupt*/ uint32_t in_dscr_empty: 1; /*The raw interrupt status bit for the i2s_in_dscr_empty_int interrupt*/ uint32_t out_total_eof: 1; /*The raw interrupt status bit for the i2s_out_total_eof_int interrupt*/ uint32_t reserved17: 15; }; uint32_t val; } int_raw; union { struct { uint32_t rx_take_data: 1; /*The masked interrupt status bit for the i2s_rx_take_data_int interrupt*/ uint32_t tx_put_data: 1; /*The masked interrupt status bit for the i2s_tx_put_data_int interrupt*/ uint32_t rx_wfull: 1; /*The masked interrupt status bit for the i2s_rx_wfull_int interrupt*/ uint32_t rx_rempty: 1; /*The masked interrupt status bit for the i2s_rx_rempty_int interrupt*/ uint32_t tx_wfull: 1; /*The masked interrupt status bit for the i2s_tx_wfull_int interrupt*/ uint32_t tx_rempty: 1; /*The masked interrupt status bit for the i2s_tx_rempty_int interrupt*/ uint32_t rx_hung: 1; /*The masked interrupt status bit for the i2s_rx_hung_int interrupt*/ uint32_t tx_hung: 1; /*The masked interrupt status bit for the i2s_tx_hung_int interrupt*/ uint32_t in_done: 1; /*The masked interrupt status bit for the i2s_in_done_int interrupt*/ uint32_t in_suc_eof: 1; /*The masked interrupt status bit for the i2s_in_suc_eof_int interrupt*/ uint32_t in_err_eof: 1; /*don't use*/ uint32_t out_done: 1; /*The masked interrupt status bit for the i2s_out_done_int interrupt*/ uint32_t out_eof: 1; /*The masked interrupt status bit for the i2s_out_eof_int interrupt*/ uint32_t in_dscr_err: 1; /*The masked interrupt status bit for the i2s_in_dscr_err_int interrupt*/ uint32_t out_dscr_err: 1; /*The masked interrupt status bit for the i2s_out_dscr_err_int interrupt*/ uint32_t in_dscr_empty: 1; /*The masked interrupt status bit for the i2s_in_dscr_empty_int interrupt*/ uint32_t out_total_eof: 1; /*The masked interrupt status bit for the i2s_out_total_eof_int interrupt*/ uint32_t reserved17: 15; }; uint32_t val; } int_st; union { struct { uint32_t rx_take_data: 1; /*The interrupt enable bit for the i2s_rx_take_data_int interrupt*/ uint32_t tx_put_data: 1; /*The interrupt enable bit for the i2s_tx_put_data_int interrupt*/ uint32_t rx_wfull: 1; /*The interrupt enable bit for the i2s_rx_wfull_int interrupt*/ uint32_t rx_rempty: 1; /*The interrupt enable bit for the i2s_rx_rempty_int interrupt*/ uint32_t tx_wfull: 1; /*The interrupt enable bit for the i2s_tx_wfull_int interrupt*/ uint32_t tx_rempty: 1; /*The interrupt enable bit for the i2s_tx_rempty_int interrupt*/ uint32_t rx_hung: 1; /*The interrupt enable bit for the i2s_rx_hung_int interrupt*/ uint32_t tx_hung: 1; /*The interrupt enable bit for the i2s_tx_hung_int interrupt*/ uint32_t in_done: 1; /*The interrupt enable bit for the i2s_in_done_int interrupt*/ uint32_t in_suc_eof: 1; /*The interrupt enable bit for the i2s_in_suc_eof_int interrupt*/ uint32_t in_err_eof: 1; /*don't use*/ uint32_t out_done: 1; /*The interrupt enable bit for the i2s_out_done_int interrupt*/ uint32_t out_eof: 1; /*The interrupt enable bit for the i2s_out_eof_int interrupt*/ uint32_t in_dscr_err: 1; /*The interrupt enable bit for the i2s_in_dscr_err_int interrupt*/ uint32_t out_dscr_err: 1; /*The interrupt enable bit for the i2s_out_dscr_err_int interrupt*/ uint32_t in_dscr_empty: 1; /*The interrupt enable bit for the i2s_in_dscr_empty_int interrupt*/ uint32_t out_total_eof: 1; /*The interrupt enable bit for the i2s_out_total_eof_int interrupt*/ uint32_t reserved17: 15; }; uint32_t val; } int_ena; union { struct { uint32_t take_data: 1; /*Set this bit to clear the i2s_rx_take_data_int interrupt*/ uint32_t put_data: 1; /*Set this bit to clear the i2s_tx_put_data_int interrupt*/ uint32_t rx_wfull: 1; /*Set this bit to clear the i2s_rx_wfull_int interrupt*/ uint32_t rx_rempty: 1; /*Set this bit to clear the i2s_rx_rempty_int interrupt*/ uint32_t tx_wfull: 1; /*Set this bit to clear the i2s_tx_wfull_int interrupt*/ uint32_t tx_rempty: 1; /*Set this bit to clear the i2s_tx_rempty_int interrupt*/ uint32_t rx_hung: 1; /*Set this bit to clear the i2s_rx_hung_int interrupt*/ uint32_t tx_hung: 1; /*Set this bit to clear the i2s_tx_hung_int interrupt*/ uint32_t in_done: 1; /*Set this bit to clear the i2s_in_done_int interrupt*/ uint32_t in_suc_eof: 1; /*Set this bit to clear the i2s_in_suc_eof_int interrupt*/ uint32_t in_err_eof: 1; /*don't use*/ uint32_t out_done: 1; /*Set this bit to clear the i2s_out_done_int interrupt*/ uint32_t out_eof: 1; /*Set this bit to clear the i2s_out_eof_int interrupt*/ uint32_t in_dscr_err: 1; /*Set this bit to clear the i2s_in_dscr_err_int interrupt*/ uint32_t out_dscr_err: 1; /*Set this bit to clear the i2s_out_dscr_err_int interrupt*/ uint32_t in_dscr_empty: 1; /*Set this bit to clear the i2s_in_dscr_empty_int interrupt*/ uint32_t out_total_eof: 1; /*Set this bit to clear the i2s_out_total_eof_int interrupt*/ uint32_t reserved17: 15; }; uint32_t val; } int_clr; union { struct { uint32_t tx_bck_in_delay: 2; /*Number of delay cycles for BCK into the transmitter*/ uint32_t tx_ws_in_delay: 2; /*Number of delay cycles for WS into the transmitter*/ uint32_t rx_bck_in_delay: 2; /*Number of delay cycles for BCK into the receiver*/ uint32_t rx_ws_in_delay: 2; /*Number of delay cycles for WS into the receiver*/ uint32_t rx_sd_in_delay: 2; /*Number of delay cycles for SD into the receiver*/ uint32_t tx_bck_out_delay: 2; /*Number of delay cycles for BCK out of the transmitter*/ uint32_t tx_ws_out_delay: 2; /*Number of delay cycles for WS out of the transmitter*/ uint32_t tx_sd_out_delay: 2; /*Number of delay cycles for SD out of the transmitter*/ uint32_t rx_ws_out_delay: 2; /*Number of delay cycles for WS out of the receiver*/ uint32_t rx_bck_out_delay: 2; /*Number of delay cycles for BCK out of the receiver*/ uint32_t tx_dsync_sw: 1; /*Set this bit to synchronize signals with the double sync method into the transmitter*/ uint32_t rx_dsync_sw: 1; /*Set this bit to synchronize signals with the double sync method into the receiver*/ uint32_t data_enable_delay: 2; /*Number of delay cycles for data valid flag.*/ uint32_t tx_bck_in_inv: 1; /*Set this bit to invert BCK signal input to the slave transmitter*/ uint32_t reserved25: 7; }; uint32_t val; } timing; union { struct { uint32_t rx_data_num: 6; /*Threshold of data length in receiver FIFO*/ uint32_t tx_data_num: 6; /*Threshold of data length in transmitter FIFO*/ uint32_t dscr_en: 1; /*Set this bit to enable I2S DMA mode*/ uint32_t tx_fifo_mod: 3; /*Transmitter FIFO mode configuration bits*/ uint32_t rx_fifo_mod: 3; /*Receiver FIFO mode configuration bits*/ uint32_t tx_fifo_mod_force_en: 1; /*The bit should always be set to 1*/ uint32_t rx_fifo_mod_force_en: 1; /*The bit should always be set to 1*/ uint32_t rx_fifo_sync: 1; /*force write back rx data to memory*/ uint32_t rx_24msb_en: 1; /*Only useful in rx 24bit mode. 1: the high 24 bits are effective in i2s fifo 0: the low 24 bits are effective in i2s fifo*/ uint32_t tx_24msb_en: 1; /*Only useful in tx 24bit mode. 1: the high 24 bits are effective in i2s fifo 0: the low 24 bits are effective in i2s fifo*/ uint32_t reserved24: 8; }; uint32_t val; } fifo_conf; uint32_t rx_eof_num; /*the length of data to be received. It will trigger i2s_in_suc_eof_int.*/ uint32_t conf_single_data; /*the right channel or left channel put out constant value stored in this register according to tx_chan_mod and reg_tx_msb_right*/ union { struct { uint32_t tx_chan_mod: 3; /*I2S transmitter channel mode configuration bits.*/ uint32_t rx_chan_mod: 2; /*I2S receiver channel mode configuration bits.*/ uint32_t reserved5: 27; }; uint32_t val; } conf_chan; union { struct { uint32_t addr: 20; /*The address of first outlink descriptor*/ uint32_t reserved20: 8; uint32_t stop: 1; /*Set this bit to stop outlink descriptor*/ uint32_t start: 1; /*Set this bit to start outlink descriptor*/ uint32_t restart: 1; /*Set this bit to restart outlink descriptor*/ uint32_t park: 1; }; uint32_t val; } out_link; union { struct { uint32_t addr: 20; /*The address of first inlink descriptor*/ uint32_t reserved20: 8; uint32_t stop: 1; /*Set this bit to stop inlink descriptor*/ uint32_t start: 1; /*Set this bit to start inlink descriptor*/ uint32_t restart: 1; /*Set this bit to restart inlink descriptor*/ uint32_t park: 1; }; uint32_t val; } in_link; uint32_t out_eof_des_addr; /*The address of outlink descriptor that produces EOF*/ uint32_t in_eof_des_addr; /*The address of inlink descriptor that produces EOF*/ uint32_t out_eof_bfr_des_addr; /*The address of buffer relative to the outlink descriptor that produces EOF*/ union { struct { uint32_t mode: 3; uint32_t reserved3: 1; uint32_t addr: 2; uint32_t reserved6: 26; }; uint32_t val; } ahb_test; uint32_t in_link_dscr; /*The address of current inlink descriptor*/ uint32_t in_link_dscr_bf0; /*The address of next inlink descriptor*/ uint32_t in_link_dscr_bf1; /*The address of next inlink data buffer*/ uint32_t out_link_dscr; /*The address of current outlink descriptor*/ uint32_t out_link_dscr_bf0; /*The address of next outlink descriptor*/ uint32_t out_link_dscr_bf1; /*The address of next outlink data buffer*/ union { struct { uint32_t in_rst: 1; /*Set this bit to reset in dma FSM*/ uint32_t out_rst: 1; /*Set this bit to reset out dma FSM*/ uint32_t ahbm_fifo_rst: 1; /*Set this bit to reset ahb interface cmdFIFO of DMA*/ uint32_t ahbm_rst: 1; /*Set this bit to reset ahb interface of DMA*/ uint32_t out_loop_test: 1; /*Set this bit to loop test inlink*/ uint32_t in_loop_test: 1; /*Set this bit to loop test outlink*/ uint32_t out_auto_wrback: 1; /*Set this bit to enable outlink-written-back automatically when out buffer is transmitted done.*/ uint32_t out_no_restart_clr: 1; /*don't use*/ uint32_t out_eof_mode: 1; /*DMA out EOF flag generation mode . 1: when dma has popped all data from the FIFO 0:when ahb has pushed all data to the FIFO*/ uint32_t outdscr_burst_en: 1; /*DMA outlink descriptor transfer mode configuration bit. 1: to prepare outlink descriptor with burst mode 0: to prepare outlink descriptor with byte mode*/ uint32_t indscr_burst_en: 1; /*DMA inlink descriptor transfer mode configuration bit. 1: to prepare inlink descriptor with burst mode 0: to prepare inlink descriptor with byte mode*/ uint32_t out_data_burst_en: 1; /*Transmitter data transfer mode configuration bit. 1: to prepare out data with burst mode 0: to prepare out data with byte mode*/ uint32_t check_owner: 1; /*Set this bit to enable check owner bit by hardware*/ uint32_t mem_trans_en: 1; /*don't use*/ uint32_t reserved14: 18; }; uint32_t val; } lc_conf; union { struct { uint32_t wdata: 9; uint32_t reserved9: 7; uint32_t push: 1; uint32_t reserved17: 15; }; uint32_t val; } out_fifo_push; union { struct { uint32_t rdata: 12; uint32_t reserved12: 4; uint32_t pop: 1; uint32_t reserved17: 15; }; uint32_t val; } in_fifo_pop; union { struct { uint32_t dscr_addr: 18; uint32_t out_dscr_state: 2; uint32_t out_state: 3; uint32_t cnt: 7; uint32_t out_full: 1; uint32_t out_empty: 1; /*DMA transmitter status register*/ }; uint32_t val; } lc_state0; union { struct { uint32_t dscr_addr: 18; uint32_t in_dscr_state: 2; uint32_t in_state: 3; uint32_t cnt_debug: 7; uint32_t in_full: 1; uint32_t in_empty: 1; /*DMA receiver status register*/ }; uint32_t val; } lc_state1; union { struct { uint32_t fifo_timeout: 8; /*the i2s_tx_hung_int interrupt or the i2s_rx_hung_int interrupt will be triggered when fifo hung counter is equal to this value*/ uint32_t fifo_timeout_shift: 3; /*The bits are used to scale tick counter threshold. The tick counter is reset when counter value >= 88000/2^i2s_lc_fifo_timeout_shift*/ uint32_t fifo_timeout_ena: 1; /*The enable bit for FIFO timeout*/ uint32_t reserved12: 20; }; uint32_t val; } lc_hung_conf; uint32_t reserved_78; uint32_t reserved_7c; union { struct { uint32_t y_max: 16; /*don't use*/ uint32_t y_min: 16; /*don't use*/ }; uint32_t val; } cvsd_conf0; union { struct { uint32_t sigma_max: 16; /*don't use*/ uint32_t sigma_min: 16; /*don't use*/ }; uint32_t val; } cvsd_conf1; union { struct { uint32_t cvsd_k: 3; /*don't use*/ uint32_t cvsd_j: 3; /*don't use*/ uint32_t cvsd_beta: 10; /*don't use*/ uint32_t cvsd_h: 3; /*don't use*/ uint32_t reserved19:13; /*don't use*/ }; uint32_t val; } cvsd_conf2; union { struct { uint32_t good_pack_max: 6; /*don't use*/ uint32_t n_err_seg: 3; /*don't use*/ uint32_t shift_rate: 3; /*don't use*/ uint32_t max_slide_sample: 8; /*don't use*/ uint32_t pack_len_8k: 5; /*don't use*/ uint32_t n_min_err: 3; /*don't use*/ uint32_t reserved28: 4; /*don't use*/ }; uint32_t val; } plc_conf0; union { struct { uint32_t bad_cef_atten_para: 8; /*don't use*/ uint32_t bad_cef_atten_para_shift: 4; /*don't use*/ uint32_t bad_ola_win2_para_shift: 4; /*don't use*/ uint32_t bad_ola_win2_para: 8; /*don't use*/ uint32_t slide_win_len: 8; /*don't use*/ }; uint32_t val; } plc_conf1; union { struct { uint32_t cvsd_seg_mod: 2; /*don't use*/ uint32_t min_period: 5; /*don't use*/ uint32_t reserved7: 25; /*don't use*/ }; uint32_t val; } plc_conf2; union { struct { uint32_t en: 1; /*don't use*/ uint32_t chan_mod: 1; /*don't use*/ uint32_t cvsd_dec_pack_err: 1; /*don't use*/ uint32_t cvsd_pack_len_8k: 5; /*don't use*/ uint32_t cvsd_inf_en: 1; /*don't use*/ uint32_t cvsd_dec_start: 1; /*don't use*/ uint32_t cvsd_dec_reset: 1; /*don't use*/ uint32_t plc_en: 1; /*don't use*/ uint32_t plc2dma_en: 1; /*don't use*/ uint32_t reserved13: 19; /*don't use*/ }; uint32_t val; } esco_conf0; union { struct { uint32_t with_en: 1; /*don't use*/ uint32_t no_en: 1; /*don't use*/ uint32_t cvsd_enc_start: 1; /*don't use*/ uint32_t cvsd_enc_reset: 1; /*don't use*/ uint32_t reserved4: 28; /*don't use*/ }; uint32_t val; } sco_conf0; union { struct { uint32_t tx_pcm_conf: 3; /*Compress/Decompress module configuration bits. 0: decompress transmitted data 1:compress transmitted data*/ uint32_t tx_pcm_bypass: 1; /*Set this bit to bypass Compress/Decompress module for transmitted data.*/ uint32_t rx_pcm_conf: 3; /*Compress/Decompress module configuration bits. 0: decompress received data 1:compress received data*/ uint32_t rx_pcm_bypass: 1; /*Set this bit to bypass Compress/Decompress module for received data.*/ uint32_t tx_stop_en: 1; /*Set this bit to stop disable output BCK signal and WS signal when tx FIFO is emtpy*/ uint32_t tx_zeros_rm_en: 1; /*don't use*/ uint32_t reserved10: 22; }; uint32_t val; } conf1; union { struct { uint32_t fifo_force_pd: 1; /*Force FIFO power-down*/ uint32_t fifo_force_pu: 1; /*Force FIFO power-up*/ uint32_t plc_mem_force_pd: 1; uint32_t plc_mem_force_pu: 1; uint32_t reserved4: 28; }; uint32_t val; } pd_conf; union { struct { uint32_t camera_en: 1; /*Set this bit to enable camera mode*/ uint32_t lcd_tx_wrx2_en: 1; /*LCD WR double for one datum.*/ uint32_t lcd_tx_sdx2_en: 1; /*Set this bit to duplicate data pairs (Frame Form 2) in LCD mode.*/ uint32_t data_enable_test_en: 1; /*for debug camera mode enable*/ uint32_t data_enable: 1; /*for debug camera mode enable*/ uint32_t lcd_en: 1; /*Set this bit to enable LCD mode*/ uint32_t ext_adc_start_en: 1; /*Set this bit to enable the function that ADC mode is triggered by external signal.*/ uint32_t inter_valid_en: 1; /*Set this bit to enable camera internal valid*/ uint32_t cam_sync_fifo_reset: 1; /*Set this bit to reset cam_sync_fifo*/ uint32_t cam_clk_loopback: 1; /*Set this bit to loopback cam_clk from i2s_rx*/ uint32_t cam_sync_fifo_reset_st: 1; uint32_t reserved11: 21; }; uint32_t val; } conf2; union { struct { uint32_t clkm_div_num: 8; /*Integral I2S clock divider value*/ uint32_t clkm_div_b: 6; /*Fractional clock divider numerator value*/ uint32_t clkm_div_a: 6; /*Fractional clock divider denominator value*/ uint32_t clk_en: 1; /*Set this bit to enable clk gate*/ uint32_t clk_sel: 2; /*Set this bit to enable clk_apll*/ uint32_t reserved23: 9; }; uint32_t val; } clkm_conf; union { struct { uint32_t tx_bck_div_num: 6; /*Bit clock configuration bits in transmitter mode.*/ uint32_t rx_bck_div_num: 6; /*Bit clock configuration bits in receiver mode.*/ uint32_t tx_bits_mod: 6; /*Set the bits to configure bit length of I2S transmitter channel.*/ uint32_t rx_bits_mod: 6; /*Set the bits to configure bit length of I2S receiver channel.*/ uint32_t reserved24: 8; }; uint32_t val; } sample_rate_conf; union { struct { uint32_t tx_pdm_en: 1; /*Set this bit to enable transmitter PDM mode*/ uint32_t rx_pdm_en: 1; /*Set this bit to enable receiver PDM mode*/ uint32_t pcm2pdm_conv_en: 1; /*Set this bit to enable PCM-to-PDM converter*/ uint32_t pdm2pcm_conv_en: 1; /*Set this bit to enable PDM-to-PCM converter*/ uint32_t tx_sinc_osr2: 4; /*upsample rate = 64 * reg_tx_pdm_sinc_osr2*/ uint32_t tx_prescale: 8; /*set to 0*/ uint32_t tx_hp_in_shift: 2; /*Adjust size of input signal to filter module. 0: divided by 2 1:multiplied by 1 2:multiplied by 2 3:multiplied by 4*/ uint32_t tx_lp_in_shift: 2; /*Adjust size of input signal to filter module. 0: divided by 2 1:multiplied by 1 2:multiplied by 2 3:multiplied by 4*/ uint32_t tx_sinc_in_shift: 2; /*Adjust size of input signal to filter module. 0: divided by 2 1:multiplied by 1 2:multiplied by 2 3:multiplied by 4*/ uint32_t tx_sigmadelta_in_shift: 2; /*Adjust size of input signal to filter module. 0: divided by 2 1:multiplied by 1 2:multiplied by 2 3:multiplied by 4*/ uint32_t rx_sinc_dsr_16_en: 1; /*PDM down-sampling rate for filter group1 in receiver mode. 0: downsample rate = 64 1:downsample rate = 128*/ uint32_t txhp_bypass: 1; /*Set this bit to enable tx pdm hp filter bypass*/ uint32_t tx_chan_mod: 2; /*pdm tx channel mode*/ uint32_t tx_way_mode: 2; /*0/1 pdm rx use one-way*/ uint32_t rx_way_mode: 2; /*0/1 pdm rx use one-way*/ }; uint32_t val; } pdm_conf; union { struct { uint32_t tx_pdm_fs: 10; /*PCM-to-PDM converter PCM frequency parameter*/ uint32_t tx_pdm_fp: 10; /*PCM-to-PDM converter PDM frequency parameter*/ uint32_t reserved20:12; }; uint32_t val; } pdm_freq_conf; union { struct { uint32_t tx_idle: 1; /*1: i2s_tx is idle state*/ uint32_t reserved1: 31; }; uint32_t val; } state; uint32_t reserved_c0; uint32_t reserved_c4; uint32_t reserved_c8; uint32_t reserved_cc; uint32_t reserved_d0; uint32_t reserved_d4; uint32_t reserved_d8; uint32_t reserved_dc; uint32_t reserved_e0; uint32_t reserved_e4; uint32_t reserved_e8; uint32_t reserved_ec; uint32_t reserved_f0; uint32_t reserved_f4; uint32_t reserved_f8; uint32_t date; /**/ } i2s_dev_t; extern i2s_dev_t I2S0; extern i2s_dev_t I2S1; #ifdef __cplusplus } #endif #endif /* _SOC_I2S_STRUCT_H_ */