| ////////////////////////////////////////////////////////////////////////////// |
| // SPDX-FileCopyrightText: 2021 , Dinesh Annayya |
| // |
| // 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. |
| // SPDX-License-Identifier: Apache-2.0 |
| // SPDX-FileContributor: Created by Dinesh Annayya <dinesha@opencores.org> |
| // |
| ////////////////////////////////////////////////////////////////////// |
| //// //// |
| //// Pinmux //// |
| //// //// |
| //// This file is part of the riscduino cores project //// |
| //// https://github.com/dineshannayya/riscduino.git //// |
| //// //// |
| //// Description //// |
| //// Manages all the pin multiplexing //// |
| //// //// |
| //// To Do: //// |
| //// nothing //// |
| //// //// |
| //// Author(s): //// |
| //// - Dinesh Annayya, dinesha@opencores.org //// |
| //// //// |
| //// Revision : //// |
| //// 0.1 - 16th Aug 2022, Dinesh A //// |
| //// Seperated the pinmux from pinmux_top module //// |
| //// 0.2 - 21th Aug 2022, Dinesh A //// |
| //// uart_master disable option added //// |
| //// 0.3 - 28th Aug 2022, Dinesh A //// |
| //// Due to caravel io[4:0] reserved on power up, we have//// |
| //// re-arrange the arduino pins from 5 onward //// |
| ////////////////////////////////////////////////////////////////////// |
| /************************************************ |
| * Pin Mapping Arduino ATMGE CONFIG |
| * ATMEGA328 Port caravel Pin Mapping |
| * Pin-1 22 PC6/WS[0]/RESET* digital_io[5] |
| * Pin-2 0 PD0/WS[0]/MRXD/RXD[0] digital_io[6] |
| * Pin-3 1 PD1/WS[0]/MRXD/TXD[0] digital_io[7] |
| * Pin-4 2 PD2/WS[0]/RXD[1]/INT0 digital_io[8] |
| * Pin-5 3 PD3/WS[1]INT1/OC2B(PWM0) digital_io[9] |
| * Pin-6 4 PD4/WS[1]TXD[1] digital_io[10] |
| * Pin-7 VCC - |
| * Pin-8 GND - |
| * Pin-9 20 PB6/WS[1]/XTAL1/TOSC1 digital_io[11] |
| * Pin-10 21 PB7/WS[1]/XTAL2/TOSC2 digital_io[12] |
| * Pin-11 5 PD5/WS[2]/SS[3]/OC0B(PWM1)/T1 strap[0] digital_io[13] |
| * Pin-12 6 PD6/WS[2]/SS[2]/OC0A(PWM2)/AIN0 strap[1] digital_io[14]/analog_io[2] |
| * Pin-13 7 PD7/WS[2]/A1N1 strap[2] digital_io[15]/analog_io[3] |
| * Pin-14 8 PB0/WS[2]/CLKO/ICP1 strap[3] digital_io[16] |
| * Pin-15 9 PB1/WS[3]/SS[1]OC1A(PWM3) strap[4] digital_io[17] |
| * Pin-16 10 PB2/WS[3]/SS[0]/OC1B(PWM4) strap[5] digital_io[18] |
| * Pin-17 11 PB3/WS[3]/MOSI/OC2A(PWM5) strap[6] digital_io[19] |
| * Pin-18 12 PB4/WS[3]/MISO strap[7] digital_io[20] |
| * Pin-19 13 PB5/SCK digital_io[21] |
| * Pin-20 AVCC - |
| * Pin-21 AREF analog_io[10] |
| * Pin-22 GND - |
| * Pin-23 14 PC0/ADC0 digital_io[22]/analog_io[11] |
| * Pin-24 15 PC1/ADC1 digital_io[23]/analog_io[12] |
| * Pin-25 16 PC2/usb_dp/ADC2 digital_io[24]/analog_io[13] |
| * Pin-26 17 PC3/usb_dn/ADC3 digital_io[25]/analog_io[14] |
| * Pin-27 18 PC4/ADC4/SDA digital_io[26]/analog_io[15] |
| * Pin-28 19 PC5/ADC5/SCL digital_io[27]/analog_io[16] |
| * |
| * Additional Pad used for Externam ROM/RAM |
| * sflash_sck digital_io[28] |
| * sflash_ss[0] strap[8] digital_io[29] |
| * sflash_ss[1] strap[9] digital_io[30] |
| * sflash_ss[2] strap[10] digital_io[31] |
| * sflash_ss[3] strap[11] digital_io[32] |
| * sflash_io0 strap[12] digital_io[33] |
| * sflash_io1 strap[13] digital_io[34] |
| * sflash_io2 strap[14] digital_io[35] |
| * sflash_io3 strap[15] digital_io[36] |
| * dbg_clk_mon digital_io[37] |
| * These port are not available at power up |
| * PA0 digital_io[0] |
| * PA1 digital_io[1] |
| * PA2 digital_io[2] |
| * PA3 digital_io[3] |
| * PA4 digital_io[4] |
| **************************************************************** |
| * Pin-1 RESET is not supported as there is no suppport for fuse config |
| |
| |
| **************/ |
| |
| module pinmux ( |
| input logic cfg_strap_pad_ctrl , // 1 - Keep the Pad in input direction |
| output logic [15:0] pad_strap_in , // Strap value |
| // Digital IO |
| output logic [37:0] digital_io_out , |
| output logic [37:0] digital_io_oen , |
| input logic [37:0] digital_io_in , |
| |
| output logic xtal_clk , |
| |
| // Config |
| input logic [31:0] cfg_gpio_out_type ,// GPIO Type, 1 - WS_281X port |
| input logic [31:0] cfg_gpio_dir_sel , |
| input logic [31:0] cfg_multi_func_sel , |
| |
| output logic[5:0] cfg_pwm_enb , |
| input logic [5:0] pwm_wfm , |
| output logic [1:0] ext_intr_in , // External PAD level interrupt |
| output logic [31:0] pad_gpio_in , // GPIO data input from PAD |
| input logic [31:0] pad_gpio_out , // GPIO Data out towards PAD |
| |
| // SFLASH I/F |
| input logic sflash_sck , |
| input logic [3:0] sflash_ss , |
| input logic [3:0] sflash_oen , |
| input logic [3:0] sflash_do , |
| output logic [3:0] sflash_di , |
| |
| // SSRAM I/F - Temp Masked |
| //input logic ssram_sck, |
| //input logic ssram_ss, |
| //input logic [3:0] ssram_oen, |
| //input logic [3:0] ssram_do, |
| //output logic [3:0] ssram_di, |
| |
| // USB I/F |
| input logic usb_dp_o, |
| input logic usb_dn_o, |
| input logic usb_oen, |
| output logic usb_dp_i, |
| output logic usb_dn_i, |
| |
| // UART I/F |
| input logic [1:0] uart_txd, |
| output logic [1:0] uart_rxd, |
| |
| // I2CM I/F |
| input logic i2cm_clk_o, |
| output logic i2cm_clk_i, |
| input logic i2cm_clk_oen, |
| input logic i2cm_data_oen, |
| input logic i2cm_data_o, |
| output logic i2cm_data_i, |
| |
| // SPI MASTER |
| input logic spim_sck, |
| input logic [3:0] spim_ssn, |
| input logic spim_miso, |
| output logic spim_mosi, |
| |
| // SPI SLAVE |
| output logic spis_sck, |
| output logic spis_ssn, |
| input logic spis_miso, |
| output logic spis_mosi, |
| |
| // UART MASTER I/F |
| output logic uartm_rxd , |
| input logic uartm_txd , |
| |
| // WS_281X TXD Port |
| input logic [3:0] ws_txd, |
| |
| input logic dbg_clk_mon |
| |
| ); |
| |
| |
| |
| reg [7:0] port_a_in; // PORT A Data In |
| reg [7:0] port_b_in; // PORT B Data In |
| reg [7:0] port_c_in; // PORT C Data In |
| reg [7:0] port_d_in; // PORT D Data In |
| |
| wire [7:0] port_a_out; // PORT A Data Out |
| wire [7:0] port_b_out; // PORT B Data Out |
| wire [7:0] port_c_out; // PORT C Data Out |
| wire [7:0] port_d_out; // PORT D Data Out |
| |
| //-------------------------------------------------- |
| // Strap Pin Mapping |
| //-------------------------------------------------- |
| assign pad_strap_in = {digital_io_in[36:29],digital_io_in[20:13] }; |
| |
| assign xtal_clk = digital_io_in[11]; |
| |
| // GPIO to PORT Mapping |
| assign pad_gpio_in[7:0] = port_a_in; |
| assign pad_gpio_in[15:8] = port_b_in; |
| assign pad_gpio_in[23:16] = port_c_in; |
| assign pad_gpio_in[31:24] = port_d_in; |
| |
| assign port_a_out = pad_gpio_out[7:0]; |
| assign port_b_out = pad_gpio_out[15:8]; |
| assign port_c_out = pad_gpio_out[23:16]; |
| assign port_d_out = pad_gpio_out[31:24]; |
| |
| |
| assign cfg_pwm_enb = cfg_multi_func_sel[5:0]; |
| wire [1:0] cfg_int_enb = cfg_multi_func_sel[7:6]; |
| wire [1:0] cfg_uart_enb = cfg_multi_func_sel[9:8]; |
| wire cfg_spim_enb = cfg_multi_func_sel[10]; |
| wire [3:0] cfg_spim_cs_enb = cfg_multi_func_sel[14:11]; |
| wire cfg_i2cm_enb = cfg_multi_func_sel[15]; |
| wire cfg_usb_enb = cfg_multi_func_sel[16]; |
| wire cfg_muart_enb = cfg_multi_func_sel[31]; // 1 - uart master enable, |
| |
| wire [7:0] cfg_port_a_dir_sel = cfg_gpio_dir_sel[7:0]; |
| wire [7:0] cfg_port_b_dir_sel = cfg_gpio_dir_sel[15:8]; |
| wire [7:0] cfg_port_c_dir_sel = cfg_gpio_dir_sel[23:16]; |
| wire [7:0] cfg_port_d_dir_sel = cfg_gpio_dir_sel[31:24]; |
| |
| wire [7:0] cfg_port_a_port_type = cfg_gpio_out_type[7:0]; |
| wire [7:0] cfg_port_b_port_type = cfg_gpio_out_type[15:8]; |
| wire [7:0] cfg_port_c_port_type = cfg_gpio_out_type[23:16]; |
| wire [7:0] cfg_port_d_port_type = cfg_gpio_out_type[31:24]; |
| |
| // This logic to create spi slave interface |
| logic pin_resetn,spis_boot; |
| |
| // On Reset internal SPI Master is disabled, If cfg_spim_enb = 0, then we are in |
| // SPIS Boot Mode |
| assign spis_boot = (cfg_spim_enb ) ? 1'b0: !pin_resetn; |
| assign spis_ssn = (spis_boot ) ? pin_resetn : 1'b1; |
| |
| // datain selection |
| always_comb begin |
| port_a_in = 'h0; |
| port_b_in = 'h0; |
| port_c_in = 'h0; |
| port_d_in = 'h0; |
| uart_rxd = 'b1; |
| ext_intr_in= 'h0; |
| spim_mosi = 'h0; |
| i2cm_data_i= 'h0; |
| i2cm_clk_i = 'h0; |
| uartm_rxd = 'b1; |
| |
| //Pin-1 PC6/RESET* digital_io[5] |
| port_c_in[6] = digital_io_in[5]; |
| pin_resetn = digital_io_in[5]; |
| |
| //Pin-2 PD0/MRXD/RXD[0] digital_io[6] |
| port_d_in[0] = digital_io_in[6]; |
| if (cfg_muart_enb) uartm_rxd = digital_io_in[6]; |
| else if(cfg_uart_enb[0]) uart_rxd[0] = digital_io_in[6]; |
| |
| //Pin-3 PD1/MTXD/TXD[0] digital_io[7] |
| port_d_in[1] = digital_io_in[7]; |
| |
| |
| //Pin-4 PD2/RXD[1]/INT0 digital_io[8] |
| port_d_in[2] = digital_io_in[8]; |
| if(cfg_uart_enb[1]) uart_rxd[1] = digital_io_in[8]; |
| else if(cfg_int_enb[0]) ext_intr_in[0] = digital_io_in[8]; |
| |
| //Pin-5 PD3/INT1/OC2B(PWM0) digital_io[9] |
| port_d_in[3] = digital_io_in[9]; |
| if(cfg_int_enb[1]) ext_intr_in[1] = digital_io_in[9]; |
| |
| //Pin-6 PD4/TXD[1] digital_io[10] |
| port_d_in[4] = digital_io_in[10]; |
| |
| //Pin-9 PB6/XTAL1/TOSC1 digital_io[11] |
| port_b_in[6] = digital_io_in[11]; |
| |
| // Pin-10 PB7/XTAL2/TOSC2 digital_io[12] |
| port_b_in[7] = digital_io_in[12]; |
| |
| //Pin-11 PD5/OC0B(PWM1)/T1 digital_io[13] |
| port_d_in[5] = digital_io_in[13]; |
| |
| //Pin-12 PD6/OC0A(PWM2)/AIN0 digital_io[14] /analog_io[2] |
| port_d_in[6] = digital_io_in[14]; |
| |
| //Pin-13 PD7/A1N1 digital_io[15]/analog_io[3] |
| port_d_in[7] = digital_io_in[15]; |
| |
| //Pin-14 PB0/CLKO/ICP1 digital_io[16] |
| port_b_in[0] = digital_io_in[16]; |
| |
| //Pin-15 PB1/OC1A(PWM3) digital_io[17] |
| port_b_in[1] = digital_io_in[17]; |
| |
| //Pin-16 PB2/SS/OC1B(PWM4) digital_io[18] |
| port_b_in[2] = digital_io_in[18]; |
| |
| //Pin-17 PB3/MOSI/OC2A(PWM5) digital_io[19] |
| port_b_in[3] = digital_io_in[19]; |
| if(cfg_spim_enb) spim_mosi = digital_io_in[19]; // SPIM MOSI (Input) = SPIS MISO (Output) |
| |
| //Pin-18 PB4/MISO digital_io[20] |
| port_b_in[4] = digital_io_in[20]; |
| spis_mosi = (spis_boot) ? digital_io_in[20] : 1'b0; // SPIM MISO (Output) = SPIS MOSI (Input) |
| |
| //Pin-19 PB5/SCK digital_io[21] |
| port_b_in[5]= digital_io_in[21]; |
| spis_sck = (spis_boot) ? digital_io_in[21] : 1'b1; // SPIM SCK (Output) = SPIS SCK (Input) |
| |
| //Pin-23 PC0/ADC0 digital_io[22]/analog_io[11] |
| port_c_in[0] = digital_io_in[22]; |
| |
| //Pin-24 PC1/ADC1 digital_io[23]/analog_io[12] |
| port_c_in[1] = digital_io_in[23]; |
| |
| //Pin-25 PC2/ADC2 digital_io[24]/usb_dp/analog_io[13] |
| usb_dp_i = (cfg_usb_enb) ? digital_io_in[24] : 1'b1; |
| port_c_in[2] = digital_io_in[24]; |
| |
| //Pin-26 PC3/ADC3 digital_io[25]/usb_dn/analog_io[14] |
| usb_dn_i = (cfg_usb_enb) ? digital_io_in[25] : 1'b1; |
| port_c_in[3] = digital_io_in[25]; |
| |
| //Pin-27 PC4/ADC4/SDA digital_io[26]/analog_io[15] |
| port_c_in[4] = digital_io_in[26]; |
| if(cfg_i2cm_enb) i2cm_data_i = digital_io_in[26]; |
| |
| //Pin-28 PC5/ADC5/SCL digital_io[27]/analog_io[16] |
| port_c_in[5] = digital_io_in[27]; |
| if(cfg_i2cm_enb) i2cm_clk_i = digital_io_in[27]; |
| |
| sflash_di[0] = digital_io_in[33]; |
| sflash_di[1] = digital_io_in[34]; |
| sflash_di[2] = digital_io_in[35]; |
| sflash_di[3] = digital_io_in[36]; |
| |
| port_a_in[0] = digital_io_in[0]; |
| port_a_in[1] = digital_io_in[1]; |
| port_a_in[2] = digital_io_in[2]; |
| port_a_in[3] = digital_io_in[3]; |
| port_a_in[4] = digital_io_in[4]; |
| |
| end |
| |
| // dataout selection |
| always_comb begin |
| digital_io_out = 'h0; |
| //Pin-1 PC6/WS[0]/RESET* digital_io[5] |
| if(cfg_port_c_port_type[6]) digital_io_out[5] = ws_txd[0]; |
| else if(cfg_port_c_dir_sel[6]) digital_io_out[5] = port_c_out[6]; |
| |
| //Pin-2 PD0/WS[0]/MRXD/RXD[0] digital_io[6] |
| if(cfg_port_d_port_type[0]) digital_io_out[6] = ws_txd[0]; |
| else if(cfg_port_d_dir_sel[0]) digital_io_out[6] = port_d_out[0]; |
| |
| //Pin-3 PD1/WS[0]/MTXD/TXD[0] digital_io[7] |
| if (cfg_muart_enb) digital_io_out[7] = uartm_txd; |
| else if(cfg_uart_enb[0]) digital_io_out[7] = uart_txd[0]; |
| else if(cfg_port_d_port_type[1]) digital_io_out[7] = ws_txd[0]; |
| else if(cfg_port_d_dir_sel[1]) digital_io_out[7] = port_d_out[1]; |
| |
| |
| //Pin-4 PD2/WS[0]/RXD[1]/INT0 digital_io[8] |
| if(cfg_port_d_port_type[2]) digital_io_out[8] = ws_txd[0]; |
| else if(cfg_port_d_dir_sel[2]) digital_io_out[8] = port_d_out[2]; |
| |
| //Pin-5 PD3/WS[1]INT1/OC2B(PWM0) digital_io[9] |
| if(cfg_pwm_enb[0]) digital_io_out[9] = pwm_wfm[0]; |
| else if(cfg_port_d_port_type[3])digital_io_out[9] = ws_txd[1]; |
| else if(cfg_port_d_dir_sel[3]) digital_io_out[9] = port_d_out[3]; |
| |
| //Pin-6 PD4/WS[1]/TXD[1] digital_io[10] |
| if (cfg_uart_enb[1]) digital_io_out[10] = uart_txd[1]; |
| else if(cfg_port_d_port_type[4]) digital_io_out[10] = ws_txd[1]; |
| else if(cfg_port_d_dir_sel[4]) digital_io_out[10] = port_d_out[4]; |
| |
| //Pin-9 PB6/XTAL1/WS[1]/TOSC1 digital_io[11] |
| if(cfg_port_b_port_type[6]) digital_io_out[11] = ws_txd[1]; |
| else if(cfg_port_b_dir_sel[6]) digital_io_out[11] = port_b_out[6]; |
| |
| |
| // Pin-10 PB7/XTAL2/WS[1]/TOSC2 digital_io[12] |
| if(cfg_port_b_port_type[7]) digital_io_out[12] = ws_txd[1]; |
| else if(cfg_port_b_dir_sel[7]) digital_io_out[12] = port_b_out[7]; |
| |
| //Pin-11 PD5/SS[3]/WS[2]/OC0B(PWM1)/T1 digital_io[13] |
| if(cfg_pwm_enb[1]) digital_io_out[13] = pwm_wfm[1]; |
| else if(cfg_spim_cs_enb[3]) digital_io_out[13] = spim_ssn[3]; |
| else if(cfg_port_d_port_type[5])digital_io_out[13] = ws_txd[2]; |
| else if(cfg_port_d_dir_sel[5]) digital_io_out[13] = port_d_out[5]; |
| |
| //Pin-12 PD6/SS[2]/WS[2]/OC0A(PWM2)/AIN0 digital_io[14] /analog_io[2] |
| if(cfg_pwm_enb[2]) digital_io_out[14] = pwm_wfm[2]; |
| else if(cfg_spim_cs_enb[2]) digital_io_out[14] = spim_ssn[2]; |
| else if(cfg_port_d_port_type[6])digital_io_out[14] = ws_txd[2]; |
| else if(cfg_port_d_dir_sel[6]) digital_io_out[14] = port_d_out[6]; |
| |
| |
| //Pin-13 PD7/A1N1/WS[2] digital_io[15]/analog_io[3] |
| if(cfg_port_d_port_type[7]) digital_io_out[15] = ws_txd[2]; |
| else if(cfg_port_d_dir_sel[7]) digital_io_out[15] = port_d_out[7]; |
| |
| //Pin-14 PB0/CLKO/WS[2]/ICP1 digital_io[16] |
| if(cfg_port_b_port_type[0]) digital_io_out[16] = ws_txd[2]; |
| else if(cfg_port_b_dir_sel[0]) digital_io_out[16] = port_b_out[0]; |
| |
| //Pin-15 PB1/SS[1]/WS[3]/OC1A(PWM3) digital_io[17] |
| if(cfg_pwm_enb[3]) digital_io_out[17] = pwm_wfm[3]; |
| else if(cfg_spim_cs_enb[1]) digital_io_out[17] = spim_ssn[1]; |
| else if(cfg_port_b_port_type[1])digital_io_out[17] = ws_txd[3]; |
| else if(cfg_port_b_dir_sel[1]) digital_io_out[17] = port_b_out[1]; |
| |
| //Pin-16 PB2/SS[0]/WS[3]/OC1B(PWM4) digital_io[18] |
| if(cfg_pwm_enb[4]) digital_io_out[18] = pwm_wfm[4]; |
| else if(cfg_spim_cs_enb[0]) digital_io_out[18] = spim_ssn[0]; |
| else if(cfg_port_b_port_type[2])digital_io_out[18] = ws_txd[3]; |
| else if(cfg_port_b_dir_sel[2]) digital_io_out[18] = port_b_out[2]; |
| |
| //Pin-17 PB3/MOSI/WS[3]/OC2A(PWM5) digital_io[19] |
| if(cfg_pwm_enb[5]) digital_io_out[19] = pwm_wfm[5]; |
| else if(cfg_port_b_port_type[3]) digital_io_out[19] = ws_txd[3]; |
| else if(cfg_port_b_dir_sel[3]) digital_io_out[19] = port_b_out[3]; |
| else if(spis_boot) digital_io_out[19] = spis_miso; // SPIM MOSI (Input) = SPIS MISO (Output) |
| |
| //Pin-18 PB4/WS[3]/MISO digital_io[20] |
| if(cfg_spim_enb) digital_io_out[20] = spim_miso; // SPIM MISO (Output) = SPIS MOSI (Input) |
| else if(cfg_port_b_port_type[4])digital_io_out[20] = ws_txd[3]; |
| else if(cfg_port_b_dir_sel[4]) digital_io_out[20] = port_b_out[4]; |
| |
| //Pin-19 PB5/SCK digital_io[21] |
| if(cfg_spim_enb) digital_io_out[21] = spim_sck; // SPIM SCK (Output) = SPIS SCK (Input) |
| else if(cfg_port_b_dir_sel[5]) digital_io_out[21] = port_b_out[5]; |
| |
| //Pin-23 PC0/ADC0 digital_io[22]/analog_io[11] |
| if(cfg_port_c_dir_sel[0]) digital_io_out[22] = port_c_out[0]; |
| |
| //Pin-24 PC1/ADC1 digital_io[23]/analog_io[12] |
| if(cfg_port_c_dir_sel[1]) digital_io_out[23] = port_c_out[1]; |
| |
| //Pin-25 PC2/USB_DP/ADC2 digital_io[24]/analog_io[13] |
| if(cfg_usb_enb) digital_io_out[24] = usb_dp_o; |
| else if(cfg_port_c_dir_sel[2]) digital_io_out[24] = port_c_out[2]; |
| |
| //Pin-26 PC3/USB_DN/ADC3 digital_io[25]/analog_io[14] |
| if(cfg_usb_enb) digital_io_out[25] = usb_dn_o; |
| if(cfg_port_c_dir_sel[3]) digital_io_out[25] = port_c_out[3]; |
| |
| //Pin-27 PC4/ADC4/SDA digital_io[26]/analog_io[15] |
| if(cfg_i2cm_enb) digital_io_out[26] = i2cm_data_o; |
| else if(cfg_port_c_dir_sel[4]) digital_io_out[26] = port_c_out[4]; |
| |
| //Pin-28 PC5/ADC5/SCL digital_io[27]/analog_io[16] |
| if(cfg_i2cm_enb) digital_io_out[27] = i2cm_clk_o; |
| else if(cfg_port_c_dir_sel[5]) digital_io_out[27] = port_c_out[5]; |
| |
| // Serial Flash |
| digital_io_out[28] = sflash_sck ; |
| digital_io_out[29] = sflash_ss[0] ; |
| digital_io_out[30] = sflash_ss[1] ; |
| digital_io_out[31] = sflash_ss[2] ; |
| digital_io_out[32] = sflash_ss[3] ; |
| digital_io_out[33] = sflash_do[0] ; |
| digital_io_out[34] = sflash_do[1] ; |
| digital_io_out[35] = sflash_do[2] ; |
| digital_io_out[36] = sflash_do[3] ; |
| |
| // dbg_clk_mon - Pll clock output monitor |
| digital_io_out[37] = dbg_clk_mon; |
| |
| digital_io_out[0] = port_a_out[0] ; |
| digital_io_out[1] = port_a_out[1] ; |
| digital_io_out[2] = port_a_out[2] ; |
| digital_io_out[3] = port_a_out[3] ; |
| digital_io_out[4] = port_a_out[4] ; |
| end |
| |
| // dataoen selection |
| always_comb begin |
| digital_io_oen = 38'h3F_FFFF_FFFF; |
| |
| //Pin-1 PC6/WS[0]/RESET* digital_io[5] |
| if(cfg_port_c_port_type[6]) digital_io_oen[5] = 1'b1; |
| else if(cfg_port_c_dir_sel[6]) digital_io_oen[5] = 1'b0; |
| |
| //Pin-2 PD0/WS[0]/MRXD/RXD[0] digital_io[6] |
| if (cfg_muart_enb) digital_io_oen[6] = 1'b1; |
| else if(cfg_uart_enb[0]) digital_io_oen[6] = 1'b1; |
| else if(cfg_port_d_port_type[0])digital_io_oen[6] = 1'b1; |
| else if(cfg_port_d_dir_sel[0]) digital_io_oen[6] = 1'b0; |
| |
| //Pin-3 PD1/WS[0]/MTXD/TXD[0] digital_io[7] |
| if (cfg_muart_enb) digital_io_oen[7] = 1'b0; |
| else if(cfg_uart_enb[0]) digital_io_oen[7] = 1'b0; |
| else if(cfg_port_d_port_type[1])digital_io_oen[7] = 1'b1; |
| else if(cfg_port_d_dir_sel[1]) digital_io_oen[7] = 1'b0; |
| |
| //Pin-4 PD2/WS[0]/RXD[1]/INT0 digital_io[8] |
| if(cfg_int_enb[0]) digital_io_oen[8] = 1'b1; |
| else if(cfg_port_d_port_type[2])digital_io_oen[8] = 1'b1; |
| else if(cfg_port_d_dir_sel[2]) digital_io_oen[8] = 1'b0; |
| |
| //Pin-5 PD3/WS[1]/INT1/OC2B(PWM0) digital_io[9] |
| if(cfg_pwm_enb[0]) digital_io_oen[9] = 1'b0; |
| else if(cfg_int_enb[1]) digital_io_oen[9] = 1'b1; |
| else if(cfg_port_d_port_type[3])digital_io_oen[9] = 1'b1; |
| else if(cfg_port_d_dir_sel[3]) digital_io_oen[9] = 1'b0; |
| |
| //Pin-6 PD4/WS[1]/TXD[1] digital_io[10] |
| if (cfg_uart_enb[1]) digital_io_oen[10] = 1'b0; |
| else if(cfg_port_d_port_type[4])digital_io_oen[10] = 1'b1; |
| else if(cfg_port_d_dir_sel[4]) digital_io_oen[10] = 1'b0; |
| |
| //Pin-9 PB6/WS[1]/XTAL1/TOSC1 digital_io[11] |
| if (cfg_uart_enb[1]) digital_io_oen[11] = 1'b1; |
| else if(cfg_port_b_port_type[6]) digital_io_oen[11] = 1'b1; |
| else if(cfg_port_b_dir_sel[6]) digital_io_oen[11] = 1'b0; |
| |
| // Pin-10 PB7/WS[1]/XTAL2/TOSC2 digital_io[12] |
| if(cfg_port_b_port_type[7]) digital_io_oen[12] = 1'b1; |
| else if(cfg_port_b_dir_sel[7]) digital_io_oen[12] = 1'b0; |
| |
| //Pin-11 PD5/WS[2]/SS[3]/OC0B(PWM1)/T1 digital_io[13] |
| if(cfg_strap_pad_ctrl) digital_io_oen[13] = 1'b1; |
| else if(cfg_pwm_enb[1]) digital_io_oen[13] = 1'b0; |
| else if(cfg_spim_cs_enb[3]) digital_io_oen[13] = 1'b0; |
| else if(cfg_port_d_port_type[5])digital_io_oen[13] = 1'b1; |
| else if(cfg_port_d_dir_sel[5]) digital_io_oen[13] = 1'b0; |
| |
| //Pin-12 PD6/SS[2]/OC0A(PWM2)/AIN0 digital_io[14] /analog_io[2] |
| if(cfg_strap_pad_ctrl) digital_io_oen[14] = 1'b1; |
| else if(cfg_pwm_enb[2]) digital_io_oen[14] = 1'b0; |
| else if(cfg_spim_cs_enb[2]) digital_io_oen[14] = 1'b0; |
| else if(cfg_port_d_port_type[6])digital_io_oen[14] = 1'b1; |
| else if(cfg_port_d_dir_sel[6]) digital_io_oen[14] = 1'b0; |
| |
| //Pin-13 PD7/WS[2]/A1N1 digital_io[15]/analog_io[3] |
| if(cfg_strap_pad_ctrl) digital_io_oen[15] = 1'b1; |
| else if(cfg_port_d_port_type[7])digital_io_oen[15] = 1'b1; |
| else if(cfg_port_d_dir_sel[7]) digital_io_oen[15] = 1'b0; |
| |
| //Pin-14 PB0/WS[2]/CLKO/ICP1 digital_io[16] |
| if(cfg_strap_pad_ctrl) digital_io_oen[16] = 1'b1; |
| else if(cfg_port_b_port_type[0])digital_io_oen[16] = 1'b1; |
| else if(cfg_port_b_dir_sel[0]) digital_io_oen[16] = 1'b0; |
| |
| //Pin-15 PB1/WS[3]/SS[1]/OC1A(PWM3) digital_io[17] |
| if(cfg_strap_pad_ctrl) digital_io_oen[17] = 1'b1; |
| else if(cfg_pwm_enb[3]) digital_io_oen[17] = 1'b0; |
| else if(cfg_spim_cs_enb[1]) digital_io_oen[17] = 1'b0; |
| else if(cfg_port_b_port_type[1])digital_io_oen[17] = 1'b1; |
| else if(cfg_port_b_dir_sel[1]) digital_io_oen[17] = 1'b0; |
| |
| //Pin-16 PB2/WS[3]/SS[0]/OC1B(PWM4) digital_io[18] |
| if(cfg_strap_pad_ctrl) digital_io_oen[18] = 1'b1; |
| else if(cfg_pwm_enb[4]) digital_io_oen[18] = 1'b0; |
| else if(cfg_spim_cs_enb[0]) digital_io_oen[18] = 1'b0; |
| else if(cfg_port_b_port_type[2])digital_io_oen[18] = 1'b1; |
| else if(cfg_port_b_dir_sel[2]) digital_io_oen[18] = 1'b0; |
| |
| //Pin-17 PB3/WS[3]/MOSI/OC2A(PWM5) digital_io[19] |
| if(cfg_strap_pad_ctrl) digital_io_oen[19] = 1'b1; |
| else if(cfg_spim_enb) digital_io_oen[19] = 1'b1; // SPIM MOSI (Input) |
| else if(cfg_pwm_enb[5]) digital_io_oen[19] = 1'b0; |
| else if(cfg_port_b_port_type[3])digital_io_oen[19] = 1'b1; |
| else if(cfg_port_b_dir_sel[3]) digital_io_oen[19] = 1'b0; |
| else if(spis_boot) digital_io_oen[19] = 1'b0; // SPIS MISO (Output) |
| |
| //Pin-18 PB4/WS[3]/MISO digital_io[20] |
| if(cfg_strap_pad_ctrl) digital_io_oen[20] = 1'b1; |
| else if(cfg_spim_enb) digital_io_oen[20] = 1'b0; // SPIM MISO (Output) |
| else if(cfg_port_b_port_type[4])digital_io_oen[20] = 1'b1; |
| else if(cfg_port_b_dir_sel[4]) digital_io_oen[20] = 1'b0; |
| else if(spis_boot) digital_io_oen[20] = 1'b1; // SPIS MOSI (Input) |
| |
| //Pin-19 PB5/SCK digital_io[21] |
| if(cfg_spim_enb) digital_io_oen[21] = 1'b0; // SPIM SCK (Output) |
| else if(cfg_port_b_dir_sel[5]) digital_io_oen[21] = 1'b0; |
| else if(spis_boot) digital_io_oen[21] = 1'b1; // SPIS SCK (Input) |
| |
| //Pin-23 PC0/ADC0 digital_io[22]/analog_io[11] |
| if(cfg_port_c_dir_sel[0]) digital_io_oen[22] = 1'b0; |
| |
| //Pin-24 PC1/ADC1 digital_io[23]/analog_io[12] |
| if(cfg_port_c_dir_sel[1]) digital_io_oen[23] = 1'b0; |
| |
| //Pin-25 PC2/USB_DP/ADC2 digital_io[24]/analog_io[13] |
| if(cfg_usb_enb) digital_io_oen[24] = usb_oen; |
| else if(cfg_port_c_dir_sel[2]) digital_io_oen[24] = 1'b0; |
| |
| //Pin-26 PC3/USB_DN/ADC3 digital_io[25]/analog_io[14] |
| if(cfg_usb_enb) digital_io_oen[25] = usb_oen; |
| else if(cfg_port_c_dir_sel[3]) digital_io_oen[25] = 1'b0; |
| |
| //Pin-27 PC4/ADC4/SDA digital_io[26]/analog_io[15] |
| if(cfg_i2cm_enb) digital_io_oen[26] = i2cm_data_oen; |
| else if(cfg_port_c_dir_sel[4]) digital_io_oen[26] = 1'b0; |
| |
| //Pin-28 PC5/ADC5/SCL digital_io[27]/analog_io[16] |
| if(cfg_i2cm_enb) digital_io_oen[27] = i2cm_clk_oen; |
| else if(cfg_port_c_dir_sel[5]) digital_io_oen[27] = 1'b0; |
| |
| // Serial Flash |
| if(cfg_strap_pad_ctrl) digital_io_oen[28] = 1'b1; |
| else digital_io_oen[28] = 1'b0; |
| if(cfg_strap_pad_ctrl) digital_io_oen[29] = 1'b1; |
| else digital_io_oen[29] = 1'b0; |
| if(cfg_strap_pad_ctrl) digital_io_oen[30] = 1'b1; |
| else digital_io_oen[30] = 1'b0; |
| if(cfg_strap_pad_ctrl) digital_io_oen[31] = 1'b1; |
| else digital_io_oen[31] = 1'b0; |
| if(cfg_strap_pad_ctrl) digital_io_oen[32] = 1'b1; |
| else digital_io_oen[32] = 1'b0; |
| if(cfg_strap_pad_ctrl) digital_io_oen[33] = 1'b1; |
| else digital_io_oen[33] = sflash_oen[0]; |
| if(cfg_strap_pad_ctrl) digital_io_oen[34] = 1'b1; |
| else digital_io_oen[34] = sflash_oen[1]; |
| if(cfg_strap_pad_ctrl) digital_io_oen[35] = 1'b1; |
| else digital_io_oen[35] = sflash_oen[2]; |
| if(cfg_strap_pad_ctrl) digital_io_oen[36] = 1'b1; |
| else digital_io_oen[36] = sflash_oen[3]; |
| |
| // dbg_clk_mon |
| if(cfg_strap_pad_ctrl) digital_io_oen[37] = 1'b1; |
| else digital_io_oen[37] = 1'b0 ; |
| |
| if(cfg_port_a_dir_sel[0]) digital_io_oen[0] = 1'b0; |
| if(cfg_port_a_dir_sel[1]) digital_io_oen[1] = 1'b0; |
| if(cfg_port_a_dir_sel[2]) digital_io_oen[2] = 1'b0; |
| if(cfg_port_a_dir_sel[3]) digital_io_oen[3] = 1'b0; |
| if(cfg_port_a_dir_sel[4]) digital_io_oen[4] = 1'b0; |
| end |
| |
| |
| endmodule |
| |
| |
