| ////////////////////////////////////////////////////////////////////////////// |
| // 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 //// |
| //// PinMux Manages all the pin multiplexing //// |
| //// //// |
| //// To Do: //// |
| //// nothing //// |
| //// //// |
| //// Author(s): //// |
| //// - Dinesh Annayya, dinesha@opencores.org //// |
| //// //// |
| //// Revision : //// |
| //// 0.1 - 16th Feb 2021, Dinesh A //// |
| //// initial version //// |
| ////////////////////////////////////////////////////////////////////// |
| |
| module pinmux ( |
| `ifdef USE_POWER_PINS |
| input logic vccd1,// User area 1 1.8V supply |
| input logic vssd1,// User area 1 digital ground |
| `endif |
| // clock skew adjust |
| input logic [3:0] cfg_cska_pinmux, |
| input logic wbd_clk_int, |
| output logic wbd_clk_pinmux, |
| // System Signals |
| // Inputs |
| input logic mclk, |
| input logic h_reset_n, |
| |
| // Global Reset control |
| output logic [1:0] cpu_core_rst_n , |
| output logic cpu_intf_rst_n , |
| output logic qspim_rst_n , |
| output logic sspim_rst_n , |
| output logic uart_rst_n , |
| output logic i2cm_rst_n , |
| output logic usb_rst_n , |
| |
| output logic [1:0] cfg_riscv_debug_sel, |
| |
| // Reg Bus Interface Signal |
| input logic reg_cs, |
| input logic reg_wr, |
| input logic [7:0] reg_addr, |
| input logic [31:0] reg_wdata, |
| input logic [3:0] reg_be, |
| |
| // Outputs |
| output logic [31:0] reg_rdata, |
| output logic reg_ack, |
| |
| // Risc configuration |
| output logic [31:0] fuse_mhartid, |
| output logic [15:0] irq_lines, |
| output logic soft_irq, |
| output logic [2:0] user_irq, |
| input logic usb_intr, |
| input logic i2cm_intr, |
| |
| // Digital IO |
| output logic [37:0] digital_io_out, |
| output logic [37:0] digital_io_oen, |
| input logic [37:0] digital_io_in, |
| |
| // 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 uart_txd, |
| output logic 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 spim_ss, |
| input logic spim_miso, |
| output logic spim_mosi, |
| |
| // UART MASTER I/F |
| output logic uartm_rxd , |
| input logic uartm_txd , |
| |
| output logic pulse1m_mclk, |
| output logic [31:0] pinmux_debug |
| |
| ); |
| |
| |
| |
| |
| /* clock pulse */ |
| //******************************************************** |
| logic pulse1u_mclk ;// 1 UsSecond Pulse for waveform Generator |
| logic pulse1s_mclk ;// 1Second Pulse for waveform Generator |
| logic [9:0] cfg_pulse_1us ;// 1us pulse generation config |
| |
| //--------------------------------------------------- |
| // 6 PWM variabled |
| //--------------------------------------------------- |
| |
| logic [5:0] pwm_wfm ; |
| logic [5:0] cfg_pwm_enb ; |
| logic [15:0] cfg_pwm0_high ; |
| logic [15:0] cfg_pwm0_low ; |
| logic [15:0] cfg_pwm1_high ; |
| logic [15:0] cfg_pwm1_low ; |
| logic [15:0] cfg_pwm2_high ; |
| logic [15:0] cfg_pwm2_low ; |
| logic [15:0] cfg_pwm3_high ; |
| logic [15:0] cfg_pwm3_low ; |
| logic [15:0] cfg_pwm4_high ; |
| logic [15:0] cfg_pwm4_low ; |
| logic [15:0] cfg_pwm5_high ; |
| logic [15:0] cfg_pwm5_low ; |
| |
| |
| wire [31:0] gpio_prev_indata ;// previously captured GPIO I/P pins data |
| wire [31:0] cfg_gpio_out_data ;// GPIO statuc O/P data from config reg |
| wire [31:0] cfg_gpio_dir_sel ;// decides on GPIO pin is I/P or O/P at pad level, 0 -> Input, 1 -> Output |
| wire [31:0] cfg_gpio_out_type ;// GPIO Type, Unused |
| wire [31:0] cfg_multi_func_sel ;// GPIO Multi function type |
| wire [31:0] cfg_gpio_posedge_int_sel ;// select posedge interrupt |
| wire [31:0] cfg_gpio_negedge_int_sel ;// select negedge interrupt |
| wire [31:00] cfg_gpio_data_in ; |
| |
| |
| 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 |
| wire [31:0] pad_gpio_in; // GPIO data input from PAD |
| wire [31:0] pad_gpio_out; // GPIO Data out towards PAD |
| wire [31:0] gpio_int_event; // GPIO Interrupt indication |
| reg [1:0] ext_intr_in; // External PAD level interrupt |
| |
| // 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 pinmux_debug = '0; // Todo: Need to fix |
| |
| // 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, |
| |
| // pinmux clock skew control |
| clk_skew_adjust u_skew_pinmux |
| ( |
| `ifdef USE_POWER_PINS |
| .vccd1 (vccd1 ),// User area 1 1.8V supply |
| .vssd1 (vssd1 ),// User area 1 digital ground |
| `endif |
| .clk_in (wbd_clk_int ), |
| .sel (cfg_cska_pinmux ), |
| .clk_out (wbd_clk_pinmux ) |
| ); |
| |
| gpio_intr u_gpio_intr ( |
| // System Signals |
| // Inputs |
| .mclk (mclk ), |
| .h_reset_n (h_reset_n ), |
| |
| // GPIO cfg input pins |
| .gpio_prev_indata (gpio_prev_indata ), |
| .cfg_gpio_data_in (cfg_gpio_data_in ), |
| .cfg_gpio_dir_sel (cfg_gpio_dir_sel ), |
| .cfg_gpio_out_data (cfg_gpio_out_data ), |
| .cfg_gpio_posedge_int_sel(cfg_gpio_posedge_int_sel), |
| .cfg_gpio_negedge_int_sel(cfg_gpio_negedge_int_sel), |
| |
| |
| // GPIO output pins |
| .pad_gpio_out (pad_gpio_out ), |
| .gpio_int_event (gpio_int_event ) |
| ); |
| |
| |
| // 1us pulse |
| pulse_gen_type2 #(.WD(10)) u_pulse_1us ( |
| |
| .clk_pulse (pulse1u_mclk), |
| .clk (mclk ), |
| .reset_n (h_reset_n ), |
| .cfg_max_cnt (cfg_pulse_1us) |
| |
| ); |
| |
| // 1millisecond pulse |
| pulse_gen_type1 u_pulse_1ms ( |
| |
| .clk_pulse (pulse1m_mclk), |
| .clk (mclk ), |
| .reset_n (h_reset_n ), |
| .trigger (pulse1u_mclk) |
| |
| ); |
| |
| // 1 second pulse |
| pulse_gen_type2 u_pulse_1s ( |
| |
| .clk_pulse (pulse1s_mclk), |
| .clk (mclk ), |
| .reset_n (h_reset_n ), |
| .cfg_max_cnt (cfg_pulse_1us) |
| |
| ); |
| |
| pinmux_reg u_pinmux_reg( |
| // System Signals |
| // Inputs |
| .mclk (mclk ), |
| .h_reset_n (h_reset_n ), |
| |
| .cpu_core_rst_n (cpu_core_rst_n ), |
| .cpu_intf_rst_n (cpu_intf_rst_n ), |
| .qspim_rst_n (qspim_rst_n ), |
| .sspim_rst_n (sspim_rst_n ), |
| .uart_rst_n (uart_rst_n ), |
| .i2cm_rst_n (i2cm_rst_n ), |
| .usb_rst_n (usb_rst_n ), |
| |
| .cfg_riscv_debug_sel (cfg_riscv_debug_sel ), |
| |
| |
| // Reg read/write Interface Inputs |
| .reg_cs (reg_cs ), |
| .reg_wr (reg_wr ), |
| .reg_addr (reg_addr ), |
| .reg_wdata (reg_wdata ), |
| .reg_be (reg_be ), |
| |
| .reg_rdata (reg_rdata ), |
| .reg_ack (reg_ack ), |
| |
| .ext_intr_in (ext_intr_in ), |
| |
| .fuse_mhartid (fuse_mhartid ), |
| .irq_lines (irq_lines ), |
| .soft_irq (soft_irq ), |
| .user_irq (user_irq ), |
| .usb_intr (usb_intr ), |
| .i2cm_intr (i2cm_intr ), |
| |
| .cfg_pulse_1us (cfg_pulse_1us ), |
| |
| |
| .cfg_pwm0_high (cfg_pwm0_high ), |
| .cfg_pwm0_low (cfg_pwm0_low ), |
| .cfg_pwm1_high (cfg_pwm1_high ), |
| .cfg_pwm1_low (cfg_pwm1_low ), |
| .cfg_pwm2_high (cfg_pwm2_high ), |
| .cfg_pwm2_low (cfg_pwm2_low ), |
| .cfg_pwm3_high (cfg_pwm3_high ), |
| .cfg_pwm3_low (cfg_pwm3_low ), |
| .cfg_pwm4_high (cfg_pwm4_high ), |
| .cfg_pwm4_low (cfg_pwm4_low ), |
| .cfg_pwm5_high (cfg_pwm5_high ), |
| .cfg_pwm5_low (cfg_pwm5_low ), |
| |
| // GPIO input pins |
| .gpio_in_data (pad_gpio_in ), |
| .gpio_int_event (gpio_int_event ), |
| |
| // GPIO config pins |
| .cfg_gpio_out_data (cfg_gpio_out_data ), |
| .cfg_gpio_dir_sel (cfg_gpio_dir_sel ), |
| .cfg_gpio_out_type (cfg_gpio_out_type ), |
| .cfg_gpio_posedge_int_sel (cfg_gpio_posedge_int_sel), |
| .cfg_gpio_negedge_int_sel (cfg_gpio_negedge_int_sel), |
| .cfg_multi_func_sel (cfg_multi_func_sel ), |
| .cfg_gpio_data_in (cfg_gpio_data_in ), |
| |
| |
| // Outputs |
| .gpio_prev_indata (gpio_prev_indata ) , |
| |
| // BIST I/F |
| .bist_en ( ), |
| .bist_run ( ), |
| .bist_load ( ), |
| |
| .bist_sdi ( ), |
| .bist_shift ( ), |
| .bist_sdo ('b0 ), |
| |
| .bist_done ('b0 ), |
| .bist_error ('h0 ), |
| .bist_correct ('h0 ), |
| .bist_error_cnt0 ('h0 ), |
| .bist_error_cnt1 ('h0 ), |
| .bist_error_cnt2 ('h0 ), |
| .bist_error_cnt3 ('h0 ) |
| |
| ); |
| |
| |
| // 6 PWM Waveform Generator |
| pwm u_pwm_0 ( |
| .waveform (pwm_wfm[0] ), |
| .h_reset_n (h_reset_n ), |
| .mclk (mclk ), |
| .pulse1m_mclk (pulse1m_mclk ), |
| .cfg_pwm_enb (cfg_pwm_enb[0] ), |
| .cfg_pwm_high (cfg_pwm0_high ), |
| .cfg_pwm_low (cfg_pwm0_low ) |
| ); |
| |
| pwm u_pwm_1 ( |
| .waveform (pwm_wfm[1] ), |
| .h_reset_n (h_reset_n ), |
| .mclk (mclk ), |
| .pulse1m_mclk (pulse1m_mclk ), |
| .cfg_pwm_enb (cfg_pwm_enb[1] ), |
| .cfg_pwm_high (cfg_pwm1_high ), |
| .cfg_pwm_low (cfg_pwm1_low ) |
| ); |
| |
| pwm u_pwm_2 ( |
| .waveform (pwm_wfm[2] ), |
| .h_reset_n (h_reset_n ), |
| .mclk (mclk ), |
| .pulse1m_mclk (pulse1m_mclk ), |
| .cfg_pwm_enb (cfg_pwm_enb[2] ), |
| .cfg_pwm_high (cfg_pwm2_high ), |
| .cfg_pwm_low (cfg_pwm2_low ) |
| ); |
| |
| pwm u_pwm_3 ( |
| .waveform (pwm_wfm[3] ), |
| .h_reset_n (h_reset_n ), |
| .mclk (mclk ), |
| .pulse1m_mclk (pulse1m_mclk ), |
| .cfg_pwm_enb (cfg_pwm_enb[3] ), |
| .cfg_pwm_high (cfg_pwm3_high ), |
| .cfg_pwm_low (cfg_pwm3_low ) |
| ); |
| pwm u_pwm_4 ( |
| .waveform (pwm_wfm[4] ), |
| .h_reset_n (h_reset_n ), |
| .mclk (mclk ), |
| .pulse1m_mclk (pulse1m_mclk ), |
| .cfg_pwm_enb (cfg_pwm_enb[4] ), |
| .cfg_pwm_high (cfg_pwm4_high ), |
| .cfg_pwm_low (cfg_pwm4_low ) |
| ); |
| pwm u_pwm_5 ( |
| .waveform (pwm_wfm[5] ), |
| .h_reset_n (h_reset_n ), |
| .mclk (mclk ), |
| .pulse1m_mclk (pulse1m_mclk ), |
| .cfg_pwm_enb (cfg_pwm_enb[5] ), |
| .cfg_pwm_high (cfg_pwm5_high ), |
| .cfg_pwm_low (cfg_pwm5_low ) |
| ); |
| |
| /************************************************ |
| * Pin Mapping ATMGE CONFIG |
| * ATMEGA328 caravel Pin Mapping |
| * Pin-1 PC6/RESET* digital_io[0] |
| * Pin-2 PD0/RXD digital_io[1] |
| * Pin-3 PD1/TXD digital_io[2] |
| * Pin-4 PD2/INT0 digital_io[3] |
| * Pin-5 PD3/INT1/OC2B(PWM0) digital_io[4] |
| * Pin-6 PD4 digital_io[5] |
| * Pin-7 VCC - |
| * Pin-8 GND - |
| * Pin-9 PB6/XTAL1/TOSC1 digital_io[6] |
| * Pin-10 PB7/XTAL2/TOSC2 digital_io[7] |
| * Pin-11 PD5/OC0B(PWM1)/T1 digital_io[8] |
| * Pin-12 PD6/OC0A(PWM2)/AIN0 digital_io[9] /analog_io[2] |
| * Pin-13 PD7/A1N1 digital_io[10]/analog_io[3] |
| * Pin-14 PB0/CLKO/ICP1 digital_io[11] |
| * Pin-15 PB1/OC1A(PWM3) digital_io[12] |
| * Pin-16 PB2/SS/OC1B(PWM4) digital_io[13] |
| * Pin-17 PB3/MOSI/OC2A(PWM5) digital_io[14] |
| * Pin-18 PB4/MISO digital_io[15] |
| * Pin-19 PB5/SCK digital_io[16] |
| * Pin-20 AVCC - |
| * Pin-21 AREF analog_io[10] |
| * Pin-22 GND - |
| * Pin-23 PC0/ADC0 digital_io[18]/analog_io[11] |
| * Pin-24 PC1/ADC1 digital_io[19]/analog_io[12] |
| * Pin-25 PC2/ADC2 digital_io[20]/analog_io[13] |
| * Pin-26 PC3/ADC3 digital_io[21]/analog_io[14] |
| * Pin-27 PC4/ADC4/SDA digital_io[22]/analog_io[15] |
| * Pin-28 PC5/ADC5/SCL digital_io[23]/analog_io[16] |
| * |
| * Additional Pad used for Externam ROM/RAM |
| * sflash_sck digital_io[24] |
| * sflash_ss[3] digital_io[25] |
| * sflash_ss[2] digital_io[26] |
| * sflash_ss[1] digital_io[27] |
| * sflash_ss[0] digital_io[28] |
| * sflash_io0 digital_io[29] |
| * sflash_io1 digital_io[30] |
| * sflash_io2 digital_io[31] |
| * sflash_io3 digital_io[32] |
| * reserved digital_io[33] |
| * uartm_rxd digital_io[34] |
| * uartm_txd digital_io[35] |
| * usb_dp digital_io[36] |
| * usb_dn digital_io[37] |
| **************************************************************** |
| * Pin-1 RESET is not supported as there is no suppport for fuse config |
| **************/ |
| |
| assign cfg_pwm_enb = cfg_multi_func_sel[5:0]; |
| wire [1:0] cfg_int_enb = cfg_multi_func_sel[7:6]; |
| wire cfg_uart_enb = cfg_multi_func_sel[8]; |
| wire cfg_i2cm_enb = cfg_multi_func_sel[9]; |
| wire cfg_spim_enb = cfg_multi_func_sel[10]; |
| |
| 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]; |
| |
| |
| // datain selection |
| always_comb begin |
| port_a_in = 'h0; |
| port_b_in = 'h0; |
| port_c_in = 'h0; |
| port_d_in = 'h0; |
| uart_rxd = 'h0; |
| ext_intr_in= 'h0; |
| spim_mosi = 'h0; |
| i2cm_data_i= 'h0; |
| i2cm_clk_i = 'h0; |
| |
| //Pin-1 PC6/RESET* digital_io[0] |
| port_c_in[6] = digital_io_in[0]; |
| |
| //Pin-2 PD0/RXD digital_io[1] |
| port_d_in[0] = digital_io_in[1]; |
| if(cfg_uart_enb) uart_rxd = digital_io_in[1]; |
| |
| //Pin-3 PD1/TXD digital_io[2] |
| port_d_in[1] = digital_io_in[2]; |
| |
| |
| //Pin-4 PD2/INT0 digital_io[3] |
| port_d_in[2] = digital_io_in[3]; |
| if(cfg_int_enb[0]) ext_intr_in[0] = digital_io_in[3]; |
| |
| //Pin-5 PD3/INT1/OC2B(PWM0) digital_io[4] |
| port_d_in[3] = digital_io_in[4]; |
| if(cfg_int_enb[1]) ext_intr_in[1] = digital_io_in[4]; |
| |
| //Pin-6 PD4 digital_io[5] |
| port_d_in[4] = digital_io_in[5]; |
| |
| //Pin-9 PB6/XTAL1/TOSC1 digital_io[6] |
| port_b_in[6] = digital_io_in[6]; |
| |
| // Pin-10 PB7/XTAL2/TOSC2 digital_io[7] |
| port_b_in[7] = digital_io_in[7]; |
| |
| //Pin-11 PD5/OC0B(PWM1)/T1 digital_io[8] |
| port_d_in[5] = digital_io_in[8]; |
| |
| //Pin-12 PD6/OC0A(PWM2)/AIN0 digital_io[9] /analog_io[2] |
| port_d_in[6] = digital_io_in[9]; |
| |
| //Pin-13 PD7/A1N1 digital_io[10]/analog_io[3] |
| port_d_in[7] = digital_io_in[10]; |
| |
| //Pin-14 PB0/CLKO/ICP1 digital_io[11] |
| port_b_in[0] = digital_io_in[11]; |
| |
| //Pin-15 PB1/OC1A(PWM3) digital_io[12] |
| port_b_in[1] = digital_io_in[12]; |
| |
| //Pin-16 PB2/SS/OC1B(PWM4) digital_io[13] |
| port_b_in[2] = digital_io_in[13]; |
| |
| //Pin-17 PB3/MOSI/OC2A(PWM5) digital_io[14] |
| port_b_in[3] = digital_io_in[14]; |
| if(cfg_spim_enb) spim_mosi = digital_io_in[14]; |
| |
| //Pin-18 PB4/MISO digital_io[15] |
| port_b_in[4] = digital_io_in[15]; |
| |
| //Pin-19 PB5/SCK digital_io[16] |
| port_b_in[5]= digital_io_in[16]; |
| |
| //Pin-23 PC0/ADC0 digital_io[18]/analog_io[11] |
| port_c_in[0] = digital_io_in[18]; |
| |
| //Pin-24 PC1/ADC1 digital_io[19]/analog_io[12] |
| port_c_in[1] = digital_io_in[19]; |
| |
| //Pin-25 PC2/ADC2 digital_io[20]/analog_io[13] |
| port_c_in[2] = digital_io_in[20]; |
| |
| //Pin-26 PC3/ADC3 digital_io[21]/analog_io[14] |
| port_c_in[3] = digital_io_in[21]; |
| |
| //Pin-27 PC4/ADC4/SDA digital_io[22]/analog_io[15] |
| port_c_in[4] = digital_io_in[22]; |
| if(cfg_i2cm_enb) i2cm_data_i = digital_io_in[22]; |
| |
| //Pin-28 PC5/ADC5/SCL digital_io[23]/analog_io[16] |
| port_c_in[5] = digital_io_in[23]; |
| if(cfg_i2cm_enb) i2cm_clk_i = digital_io_in[23]; |
| |
| sflash_di[0] = digital_io_in[29]; |
| sflash_di[1] = digital_io_in[30]; |
| sflash_di[2] = digital_io_in[31]; |
| sflash_di[3] = digital_io_in[32]; |
| |
| // UAR MASTER I/F |
| uartm_rxd = digital_io_in[34]; |
| |
| usb_dp_i = digital_io_in[36]; |
| usb_dn_i = digital_io_in[37]; |
| end |
| |
| // dataout selection |
| always_comb begin |
| digital_io_out = 'h0; |
| //Pin-1 PC6/RESET* digital_io[0] |
| if(cfg_port_c_dir_sel[6]) digital_io_out[0] = port_c_out[6]; |
| |
| //Pin-2 PD0/RXD digital_io[1] |
| if(cfg_port_d_dir_sel[0]) digital_io_out[1] = port_d_out[0]; |
| |
| //Pin-3 PD1/TXD digital_io[2] |
| if (cfg_uart_enb) digital_io_out[2] = uart_txd; |
| else if(cfg_port_d_dir_sel[1]) digital_io_out[2] = port_d_out[1]; |
| |
| |
| //Pin-4 PD2/INT0 digital_io[3] |
| if(cfg_port_d_dir_sel[2]) digital_io_out[3] = port_d_out[2]; |
| |
| //Pin-5 PD3/INT1/OC2B(PWM0) digital_io[4] |
| if(cfg_pwm_enb[0]) digital_io_out[4] = pwm_wfm[0]; |
| if(cfg_port_d_dir_sel[3]) digital_io_out[4] = port_d_out[3]; |
| |
| //Pin-6 PD4 digital_io[5] |
| if(cfg_port_d_dir_sel[4]) digital_io_out[5] = port_d_out[4]; |
| |
| //Pin-9 PB6/XTAL1/TOSC1 digital_io[6] |
| if(cfg_port_b_dir_sel[6]) digital_io_out[6] = port_b_out[6]; |
| |
| |
| // Pin-10 PB7/XTAL2/TOSC2 digital_io[7] |
| if(cfg_port_b_dir_sel[7]) digital_io_out[7] = port_b_out[7]; |
| |
| //Pin-11 PD5/OC0B(PWM1)/T1 digital_io[8] |
| if(cfg_pwm_enb[1]) digital_io_out[8] = pwm_wfm[1]; |
| else if(cfg_port_d_dir_sel[5]) digital_io_out[8] = port_d_out[5]; |
| |
| //Pin-12 PD6/OC0A(PWM2)/AIN0 digital_io[9] /analog_io[2] |
| if(cfg_pwm_enb[2]) digital_io_out[9] = pwm_wfm[2]; |
| else if(cfg_port_d_dir_sel[6]) digital_io_out[9] = port_d_out[6]; |
| |
| |
| //Pin-13 PD7/A1N1 digital_io[10]/analog_io[3] |
| if(cfg_port_d_dir_sel[7]) digital_io_out[10] = port_d_out[7]; |
| |
| //Pin-14 PB0/CLKO/ICP1 digital_io[11] |
| if(cfg_port_b_dir_sel[0]) digital_io_out[11] = port_b_out[0]; |
| |
| //Pin-15 PB1/OC1A(PWM3) digital_io[12] |
| if(cfg_pwm_enb[3]) digital_io_out[12] = pwm_wfm[3]; |
| else if(cfg_port_b_dir_sel[1]) digital_io_out[12] = port_b_out[1]; |
| |
| //Pin-16 PB2/SS/OC1B(PWM4) digital_io[13] |
| if(cfg_pwm_enb[4]) digital_io_out[13] = pwm_wfm[4]; |
| else if(cfg_spim_enb) digital_io_out[13] = spim_ss; |
| else if(cfg_port_b_dir_sel[2]) digital_io_out[13] = port_b_out[2]; |
| |
| //Pin-17 PB3/MOSI/OC2A(PWM5) digital_io[14] |
| if(cfg_pwm_enb[5]) digital_io_out[14] = pwm_wfm[5]; |
| else if(cfg_port_b_dir_sel[3]) digital_io_out[14] = port_b_out[3]; |
| |
| //Pin-18 PB4/MISO digital_io[15] |
| if(cfg_spim_enb) digital_io_out[15] = spim_miso; |
| else if(cfg_port_b_dir_sel[4]) digital_io_out[15] = port_b_out[4]; |
| |
| //Pin-19 PB5/SCK digital_io[16] |
| if(cfg_spim_enb) digital_io_out[16] = spim_sck; |
| else if(cfg_port_b_dir_sel[5]) digital_io_out[16] = port_b_out[5]; |
| |
| //Pin-23 PC0/ADC0 digital_io[18]/analog_io[11] |
| if(cfg_port_c_dir_sel[0]) digital_io_out[18] = port_c_out[0]; |
| |
| //Pin-24 PC1/ADC1 digital_io[19]/analog_io[12] |
| if(cfg_port_c_dir_sel[1]) digital_io_out[19] = port_c_out[1]; |
| |
| //Pin-25 PC2/ADC2 digital_io[20]/analog_io[13] |
| if(cfg_port_c_dir_sel[2]) digital_io_out[20] = port_c_out[2]; |
| |
| //Pin-26 PC3/ADC3 digital_io[21]/analog_io[14] |
| if(cfg_port_c_dir_sel[3]) digital_io_out[21] = port_c_out[3]; |
| |
| //Pin-27 PC4/ADC4/SDA digital_io[22]/analog_io[15] |
| if(cfg_i2cm_enb) digital_io_out[22] = i2cm_data_o; |
| else if(cfg_port_c_dir_sel[4]) digital_io_out[22] = port_c_out[4]; |
| |
| //Pin-28 PC5/ADC5/SCL digital_io[23]/analog_io[16] |
| if(cfg_i2cm_enb) digital_io_out[23] = i2cm_clk_o; |
| else if(cfg_port_c_dir_sel[5]) digital_io_out[23] = port_c_out[5]; |
| |
| // Serial Flash |
| digital_io_out[24] = sflash_sck ; |
| digital_io_out[25] = sflash_ss[3] ; |
| digital_io_out[26] = sflash_ss[2] ; |
| digital_io_out[27] = sflash_ss[1] ; |
| digital_io_out[28] = sflash_ss[0] ; |
| digital_io_out[29] = sflash_do[0] ; |
| digital_io_out[30] = sflash_do[1] ; |
| digital_io_out[31] = sflash_do[2] ; |
| digital_io_out[32] = sflash_do[3] ; |
| |
| // Reserved |
| digital_io_out[33] = 1'b0; |
| |
| // UART MASTER I/f |
| digital_io_out[34] = 1'b0 ; // RXD |
| digital_io_out[35] = uartm_txd ; // TXD |
| |
| // USB 1.1 |
| digital_io_out[36] = usb_dp_o ; |
| digital_io_out[37] = usb_dn_o ; |
| end |
| |
| // dataoen selection |
| always_comb begin |
| digital_io_oen = 38'h3F_FFFF_FFFF; |
| //Pin-1 PC6/RESET* digital_io[0] |
| if(cfg_port_c_dir_sel[6]) digital_io_oen[0] = 1'b0; |
| |
| //Pin-2 PD0/RXD digital_io[1] |
| if (cfg_uart_enb) digital_io_oen[1] = 1'b1; |
| else if(cfg_port_d_dir_sel[0]) digital_io_oen[1] = 1'b0; |
| |
| //Pin-3 PD1/TXD digital_io[2] |
| if (cfg_uart_enb) digital_io_oen[2] = 1'b0; |
| else if(cfg_port_d_dir_sel[1]) digital_io_oen[2] = 1'b0; |
| |
| //Pin-4 PD2/INT0 digital_io[3] |
| if(cfg_int_enb[0]) digital_io_oen[3] = 1'b1; |
| else if(cfg_port_d_dir_sel[2]) digital_io_oen[3] = 1'b0; |
| |
| //Pin-5 PD3/INT1/OC2B(PWM0) digital_io[4] |
| if(cfg_pwm_enb[0]) digital_io_oen[4] = 1'b0; |
| else if(cfg_int_enb[1]) digital_io_oen[4] = 1'b1; |
| else if(cfg_port_d_dir_sel[3]) digital_io_oen[4] = 1'b0; |
| |
| //Pin-6 PD4 digital_io[5] |
| if(cfg_port_d_dir_sel[4]) digital_io_oen[5] = 1'b0; |
| |
| //Pin-9 PB6/XTAL1/TOSC1 digital_io[6] |
| if(cfg_port_b_dir_sel[6]) digital_io_oen[6] = 1'b0; |
| |
| // Pin-10 PB7/XTAL2/TOSC2 digital_io[7] |
| if(cfg_port_b_dir_sel[7]) digital_io_oen[7] = 1'b0; |
| |
| //Pin-11 PD5/OC0B(PWM1)/T1 digital_io[8] |
| if(cfg_pwm_enb[1]) digital_io_oen[8] = 1'b0; |
| else if(cfg_port_d_dir_sel[5]) digital_io_oen[8] = 1'b0; |
| |
| //Pin-12 PD6/OC0A(PWM2)/AIN0 digital_io[9] /analog_io[2] |
| if(cfg_pwm_enb[2]) digital_io_oen[9] = 1'b0; |
| else if(cfg_port_d_dir_sel[6]) digital_io_oen[9] = 1'b0; |
| |
| //Pin-13 PD7/A1N1 digital_io[10]/analog_io[3] |
| if(cfg_port_d_dir_sel[7]) digital_io_oen[10] = 1'b0; |
| |
| //Pin-14 PB0/CLKO/ICP1 digital_io[11] |
| if(cfg_port_b_dir_sel[0]) digital_io_oen[11] = 1'b0; |
| |
| //Pin-15 PB1/OC1A(PWM3) digital_io[12] |
| if(cfg_pwm_enb[3]) digital_io_oen[12] = 1'b0; |
| else if(cfg_port_b_dir_sel[1]) digital_io_oen[12] = 1'b0; |
| |
| //Pin-16 PB2/SS/OC1B(PWM4) digital_io[13] |
| if(cfg_pwm_enb[4]) digital_io_oen[13] = 1'b0; |
| else if(cfg_spim_enb) digital_io_oen[13] = 1'b0; |
| else if(cfg_port_b_dir_sel[2]) digital_io_oen[13] = 1'b0; |
| |
| //Pin-17 PB3/MOSI/OC2A(PWM5) digital_io[14] |
| if(cfg_spim_enb) digital_io_oen[14] = 1'b1; |
| else if(cfg_pwm_enb[5]) digital_io_oen[14] = 1'b0; |
| else if(cfg_port_b_dir_sel[3]) digital_io_oen[14] = 1'b0; |
| |
| //Pin-18 PB4/MISO digital_io[15] |
| if(cfg_spim_enb) digital_io_oen[15] = 1'b0; |
| else if(cfg_port_b_dir_sel[4]) digital_io_oen[15] = 1'b0; |
| |
| //Pin-19 PB5/SCK digital_io[16] |
| if(cfg_spim_enb) digital_io_oen[16] = 1'b0; |
| else if(cfg_port_b_dir_sel[5]) digital_io_oen[16] = 1'b0; |
| |
| //Pin-23 PC0/ADC0 digital_io[18]/analog_io[11] |
| if(cfg_port_c_dir_sel[0]) digital_io_oen[18] = 1'b0; |
| |
| //Pin-24 PC1/ADC1 digital_io[19]/analog_io[12] |
| if(cfg_port_c_dir_sel[1]) digital_io_oen[19] = 1'b0; |
| |
| //Pin-25 PC2/ADC2 digital_io[20]/analog_io[13] |
| if(cfg_port_c_dir_sel[2]) digital_io_oen[20] = 1'b0; |
| |
| //Pin-26 PC3/ADC3 digital_io[21]/analog_io[14] |
| if(cfg_port_c_dir_sel[3]) digital_io_oen[21] = 1'b0; |
| |
| //Pin-27 PC4/ADC4/SDA digital_io[22]/analog_io[15] |
| if(cfg_i2cm_enb) digital_io_oen[22] = i2cm_data_oen; |
| else if(cfg_port_c_dir_sel[4]) digital_io_oen[22] = 1'b0; |
| |
| //Pin-28 PC5/ADC5/SCL digital_io[23]/analog_io[16] |
| if(cfg_i2cm_enb) digital_io_oen[23] = i2cm_clk_oen; |
| else if(cfg_port_c_dir_sel[5]) digital_io_oen[23] = 1'b0; |
| |
| // Serial Flash |
| digital_io_oen[24] = 1'b0 ; |
| digital_io_oen[25] = 1'b0 ; |
| digital_io_oen[26] = 1'b0 ; |
| digital_io_oen[27] = 1'b0 ; |
| digital_io_oen[28] = 1'b0 ; |
| digital_io_oen[29] = sflash_oen[0]; |
| digital_io_oen[30] = sflash_oen[1]; |
| digital_io_oen[31] = sflash_oen[2]; |
| digital_io_oen[32] = sflash_oen[3]; |
| |
| // Reserved |
| digital_io_oen[33] = 1'b0 ; |
| // UART MASTER |
| digital_io_oen[34] = 1'b1; // RXD |
| digital_io_oen[35] = 1'b0; // TXD |
| |
| // USB 1.1 |
| digital_io_oen[36] = usb_oen; |
| digital_io_oen[37] = usb_oen; |
| end |
| |
| |
| endmodule |
| |
| |
