| ////////////////////////////////////////////////////////////////////// |
| //// //// |
| //// Digital core //// |
| //// //// |
| //// This file is part of the YIFive cores project //// |
| //// http://www.opencores.org/cores/yifive/ //// |
| //// //// |
| //// Description //// |
| //// This is digital core and integrate all the main block //// |
| //// here. Following block are integrated here //// |
| //// 1. Risc V Core //// |
| //// 2. SPI Master //// |
| //// 3. Wishbone Cross Bar //// |
| //// //// |
| //// To Do: //// |
| //// nothing //// |
| //// //// |
| //// Author(s): //// |
| //// - Dinesh Annayya, dinesha@opencores.org //// |
| //// //// |
| //// Revision : //// |
| //// 0.1 - 16th Feb 2021, Dinesh A //// |
| //// Initial integration with Risc-V core + //// |
| //// Wishbone Cross Bar + SPI Master //// |
| //// //// |
| ////////////////////////////////////////////////////////////////////// |
| //// //// |
| //// Copyright (C) 2000 Authors and OPENCORES.ORG //// |
| //// //// |
| //// This source file may be used and distributed without //// |
| //// restriction provided that this copyright statement is not //// |
| //// removed from the file and that any derivative work contains //// |
| //// the original copyright notice and the associated disclaimer. //// |
| //// //// |
| //// This source file is free software; you can redistribute it //// |
| //// and/or modify it under the terms of the GNU Lesser General //// |
| //// Public License as published by the Free Software Foundation; //// |
| //// either version 2.1 of the License, or (at your option) any //// |
| //// later version. //// |
| //// //// |
| //// This source is distributed in the hope that it will be //// |
| //// useful, but WITHOUT ANY WARRANTY; without even the implied //// |
| //// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //// |
| //// PURPOSE. See the GNU Lesser General Public License for more //// |
| //// details. //// |
| //// //// |
| //// You should have received a copy of the GNU Lesser General //// |
| //// Public License along with this source; if not, download it //// |
| //// from http://www.opencores.org/lgpl.shtml //// |
| //// //// |
| ////////////////////////////////////////////////////////////////////// |
| |
| `include "scr1_arch_description.svh" |
| `ifdef SCR1_IPIC_EN |
| `include "scr1_ipic.svh" |
| `endif // SCR1_IPIC_EN |
| |
| `include "sdrc_define.v" |
| module digital_core |
| #( |
| parameter SDR_DW = 8, // SDR Data Width |
| parameter SDR_BW = 1, // SDR Byte Width |
| parameter WB_WIDTH = 32 // WB ADDRESS/DARA WIDTH |
| ) ( |
| `ifdef USE_POWER_PINS |
| inout vdda1, // User area 1 3.3V supply |
| inout vdda2, // User area 2 3.3V supply |
| inout vssa1, // User area 1 analog ground |
| inout vssa2, // User area 2 analog ground |
| inout vccd1, // User area 1 1.8V supply |
| inout vccd2, // User area 2 1.8v supply |
| inout vssd1, // User area 1 digital ground |
| inout vssd2, // User area 2 digital ground |
| `endif |
| input logic wb_clk_i , // System clock |
| input logic rtc_clk , // Real-time clock |
| input logic wb_rst_i , // Regular Reset signal |
| |
| input logic wbd_ext_cyc_i , // strobe/request |
| input logic wbd_ext_stb_i , // strobe/request |
| input logic [WB_WIDTH-1:0] wbd_ext_adr_i , // address |
| input logic wbd_ext_we_i , // write |
| input logic [WB_WIDTH-1:0] wbd_ext_dat_i , // data output |
| input logic [3:0] wbd_ext_sel_i , // byte enable |
| output logic [WB_WIDTH-1:0] wbd_ext_dat_o , // data input |
| output logic wbd_ext_ack_o , // acknowlegement |
| output logic wbd_ext_err_o , // error |
| |
| |
| // Logic Analyzer Signals |
| input logic [127:0] la_data_in , |
| output logic [127:0] la_data_out , |
| input logic [127:0] la_oenb , |
| |
| |
| // IOs |
| input logic [37:0] io_in , |
| output logic [37:0] io_out , |
| output logic [37:0] io_oeb , |
| |
| output logic [2:0] user_irq |
| |
| ); |
| |
| //--------------------------------------------------- |
| // Local Parameter Declaration |
| // -------------------------------------------------- |
| |
| |
| //--------------------------------------------------------------------- |
| // Wishbone Risc V Instruction Memory Interface |
| //--------------------------------------------------------------------- |
| logic wbd_riscv_imem_stb_i; // strobe/request |
| logic [WB_WIDTH-1:0] wbd_riscv_imem_adr_i; // address |
| logic wbd_riscv_imem_we_i; // write |
| logic [WB_WIDTH-1:0] wbd_riscv_imem_dat_i; // data output |
| logic [3:0] wbd_riscv_imem_sel_i; // byte enable |
| logic [WB_WIDTH-1:0] wbd_riscv_imem_dat_o; // data input |
| logic wbd_riscv_imem_ack_o; // acknowlegement |
| logic wbd_riscv_imem_err_o; // error |
| |
| //--------------------------------------------------------------------- |
| // RISC V Wishbone Data Memory Interface |
| //--------------------------------------------------------------------- |
| logic wbd_riscv_dmem_stb_i; // strobe/request |
| logic [WB_WIDTH-1:0] wbd_riscv_dmem_adr_i; // address |
| logic wbd_riscv_dmem_we_i; // write |
| logic [WB_WIDTH-1:0] wbd_riscv_dmem_dat_i; // data output |
| logic [3:0] wbd_riscv_dmem_sel_i; // byte enable |
| logic [WB_WIDTH-1:0] wbd_riscv_dmem_dat_o; // data input |
| logic wbd_riscv_dmem_ack_o; // acknowlegement |
| logic wbd_riscv_dmem_err_o; // error |
| |
| //--------------------------------------------------------------------- |
| // SPI Master Wishbone Interface |
| //--------------------------------------------------------------------- |
| logic wbd_spim_stb_o; // strobe/request |
| logic [WB_WIDTH-1:0] wbd_spim_adr_o; // address |
| logic wbd_spim_we_o; // write |
| logic [WB_WIDTH-1:0] wbd_spim_dat_o; // data output |
| logic [3:0] wbd_spim_sel_o; // byte enable |
| logic wbd_spim_cyc_o ; |
| logic [WB_WIDTH-1:0] wbd_spim_dat_i; // data input |
| logic wbd_spim_ack_i; // acknowlegement |
| logic wbd_spim_err_i; // error |
| |
| //--------------------------------------------------------------------- |
| // SPI Master Wishbone Interface |
| //--------------------------------------------------------------------- |
| logic wbd_sdram_stb_o ; |
| logic [WB_WIDTH-1:0] wbd_sdram_adr_o ; |
| logic wbd_sdram_we_o ; // 1 - Write, 0 - Read |
| logic [WB_WIDTH-1:0] wbd_sdram_dat_o ; |
| logic [WB_WIDTH/8-1:0] wbd_sdram_sel_o ; // Byte enable |
| logic wbd_sdram_cyc_o ; |
| logic [2:0] wbd_sdram_cti_o ; |
| logic [WB_WIDTH-1:0] wbd_sdram_dat_i ; |
| logic wbd_sdram_ack_i ; |
| |
| //--------------------------------------------------------------------- |
| // Global Register Wishbone Interface |
| //--------------------------------------------------------------------- |
| logic wbd_glbl_stb_o; // strobe/request |
| logic [WB_WIDTH-1:0] wbd_glbl_adr_o; // address |
| logic wbd_glbl_we_o; // write |
| logic [WB_WIDTH-1:0] wbd_glbl_dat_o; // data output |
| logic [3:0] wbd_glbl_sel_o; // byte enable |
| logic wbd_glbl_cyc_o ; |
| logic [WB_WIDTH-1:0] wbd_glbl_dat_i; // data input |
| logic wbd_glbl_ack_i; // acknowlegement |
| logic wbd_glbl_err_i; // error |
| |
| |
| //---------------------------------------------------- |
| // CPU Configuration |
| //---------------------------------------------------- |
| logic cpu_rst_n ; |
| logic spi_rst_n ; |
| logic sdram_rst_n ; |
| |
| logic [31:0] fuse_mhartid ; |
| logic [15:0] irq_lines ; |
| logic soft_irq ; |
| |
| //------------------------------------------------ |
| // Configuration Parameter |
| //------------------------------------------------ |
| logic [1:0] cfg_sdr_width ; // 2'b00 - 32 Bit SDR, 2'b01 - 16 Bit SDR, 2'b1x - 8 Bit |
| logic [1:0] cfg_colbits ; // 2'b00 - 8 Bit column address, |
| logic sdr_init_done ; // Indicate SDRAM Initialisation Done |
| logic [3:0] cfg_sdr_tras_d ; // Active to precharge delay |
| logic [3:0] cfg_sdr_trp_d ; // Precharge to active delay |
| logic [3:0] cfg_sdr_trcd_d ; // Active to R/W delay |
| logic cfg_sdr_en ; // Enable SDRAM controller |
| logic [1:0] cfg_req_depth ; // Maximum Request accepted by SDRAM controller |
| logic [12:0] cfg_sdr_mode_reg ; |
| logic [2:0] cfg_sdr_cas ; // SDRAM CAS Latency |
| logic [3:0] cfg_sdr_trcar_d ; // Auto-refresh period |
| logic [3:0] cfg_sdr_twr_d ; // Write recovery delay |
| logic [`SDR_RFSH_TIMER_W-1 : 0] cfg_sdr_rfsh ; |
| logic [`SDR_RFSH_ROW_CNT_W -1 : 0] cfg_sdr_rfmax ; |
| |
| //---------------------------------------------------------------------- |
| // Interface to SDRAMs |
| //-------------------------------------------------------------------------- |
| logic sdr_cke ; // SDRAM CKE |
| logic sdr_cs_n ; // SDRAM Chip Select |
| logic sdr_ras_n ; // SDRAM ras |
| logic sdr_cas_n ; // SDRAM cas |
| logic sdr_we_n ; // SDRAM write enable |
| logic [SDR_BW-1:0] sdr_dqm ; // SDRAM Data Mask |
| logic [1:0] sdr_ba ; // SDRAM Bank Enable |
| logic [12:0] sdr_addr ; // SDRAM Address |
| logic [SDR_DW-1:0] pad_sdr_din ; // SDRA Data Input |
| logic [SDR_DW-1:0] sdr_dout ; // SDRA Data output |
| logic [SDR_BW-1:0] sdr_den_n ; // SDRAM Data Output enable |
| logic sdram_clk ; // Sdram clock loop back from pad |
| logic pad_sdram_clk ; // Sdram clock loop back from pad |
| |
| |
| assign pad_sdr_din[7:0] = io_in[7:0] ; |
| assign io_out [7:0] = sdr_dout[7:0] ; |
| assign io_out [20:8] = sdr_addr[12:0] ; |
| assign io_out [22:21] = sdr_ba[1:0] ; |
| assign io_out [23] = sdr_dqm[0] ; |
| assign io_out [24] = sdr_we_n ; |
| assign io_out [25] = sdr_cas_n ; |
| assign io_out [26] = sdr_ras_n ; |
| assign io_out [27] = sdr_cs_n ; |
| assign io_out [28] = sdr_cke ; |
| assign io_out [29] = sdram_clk ; |
| assign pad_sdram_clk = io_in[29] ; |
| |
| assign io_oeb [7:0] = sdr_den_n ; |
| assign io_oeb [20:8] = {(13) {1'b0}} ; |
| assign io_oeb [22:21] = {(2) {1'b0}} ; |
| assign io_oeb [23] = 1'b0 ; |
| assign io_oeb [24] = 1'b0 ; |
| assign io_oeb [25] = 1'b0 ; |
| assign io_oeb [26] = 1'b0 ; |
| assign io_oeb [27] = 1'b0 ; |
| assign io_oeb [28] = 1'b0 ; |
| assign io_oeb [29] = 1'b0 ; |
| |
| |
| |
| //----------------------------------------------------------- |
| // SPI I/F |
| // //////////////////////////////////////////////////// |
| logic spim_sdo0 ; // SPI Master Data Out[0] |
| logic spim_sdo1 ; // SPI Master Data Out[1] |
| logic spim_sdo2 ; // SPI Master Data Out[2] |
| logic spim_sdo3 ; // SPI Master Data Out[3] |
| logic spim_sdi0 ; // SPI Master Data In[0] |
| logic spim_sdi1 ; // SPI Master Data In[1] |
| logic spim_sdi2 ; // SPI Master Data In[2] |
| logic spim_sdi3 ; // SPI Master Data In[3] |
| logic spim_clk ; |
| logic spim_csn ; |
| logic spi_en_tx ; |
| |
| assign spim_sdi0 = io_in[32]; |
| assign spim_sdi1 = io_in[33]; |
| assign spim_sdi2 = io_in[34]; |
| assign spim_sdi3 = io_in[35]; |
| |
| assign io_out[30] = spim_clk; |
| assign io_out[31] = spim_csn; |
| assign io_out[32] = spim_sdo0; |
| assign io_out[33] = spim_sdo1; |
| assign io_out[34] = spim_sdo2; |
| assign io_out[35] = spim_sdo3; |
| |
| assign io_oeb[30] = 1'b0; // spi_clk |
| assign io_oeb[31] = 1'b0; // spi_csn |
| assign io_oeb[32] = !spi_en_tx; // spi_dio0 |
| assign io_oeb[33] = !spi_en_tx; // spi_dio1 |
| assign io_oeb[34] = !spi_en_tx; // spi_dio2 |
| assign io_oeb[35] = !spi_en_tx; // spi_dio3 |
| |
| |
| // for uart |
| assign io_oeb[36] = 1'b1; // Unused |
| assign io_oeb[37] = 1'b1; // Unused |
| |
| |
| wire wb_rst_n = !wb_rst_i; |
| |
| |
| //------------------------------------------------------------------------------ |
| // RISC V Core instance |
| //------------------------------------------------------------------------------ |
| scr1_top_wb u_riscv_top ( |
| // Reset |
| .pwrup_rst_n (wb_rst_n ), |
| .rst_n (wb_rst_n ), |
| .cpu_rst_n (cpu_rst_n ), |
| `ifdef SCR1_DBG_EN |
| .sys_rst_n_o (sys_rst_n_o ), |
| .sys_rdc_qlfy_o (sys_rdc_qlfy_o ), |
| `endif // SCR1_DBG_EN |
| |
| // Clock |
| .clk (wb_clk_i ), |
| .rtc_clk (rtc_clk ), |
| |
| // Fuses |
| .fuse_mhartid (fuse_mhartid ), |
| `ifdef SCR1_DBG_EN |
| .fuse_idcode (`SCR1_TAP_IDCODE ), |
| `endif // SCR1_DBG_EN |
| |
| // IRQ |
| `ifdef SCR1_IPIC_EN |
| .irq_lines (irq_lines ), |
| `else // SCR1_IPIC_EN |
| .ext_irq (ext_irq ), // TODO - Interrupts |
| `endif // SCR1_IPIC_EN |
| .soft_irq (soft_irq ), // TODO - Interrupts |
| |
| // DFT |
| .test_mode (1'b0 ), |
| .test_rst_n (1'b1 ), |
| |
| `ifdef SCR1_DBG_EN |
| // JTAG |
| .trst_n (trst_n ), |
| .tck (tck ), |
| .tms (tms ), |
| .tdi (tdi ), |
| .tdo (tdo ), |
| .tdo_en (tdo_en ), |
| `endif // SCR1_DBG_EN |
| |
| // Instruction memory interface |
| .wbd_imem_stb_o (wbd_riscv_imem_stb_i ), |
| .wbd_imem_adr_o (wbd_riscv_imem_adr_i ), |
| .wbd_imem_we_o (wbd_riscv_imem_we_i ), |
| .wbd_imem_dat_o (wbd_riscv_imem_dat_i ), |
| .wbd_imem_sel_o (wbd_riscv_imem_sel_i ), |
| .wbd_imem_dat_i (wbd_riscv_imem_dat_o ), |
| .wbd_imem_ack_i (wbd_riscv_imem_ack_o ), |
| .wbd_imem_err_i (wbd_riscv_imem_err_o ), |
| |
| // Data memory interface |
| .wbd_dmem_stb_o (wbd_riscv_dmem_stb_i ), |
| .wbd_dmem_adr_o (wbd_riscv_dmem_adr_i ), |
| .wbd_dmem_we_o (wbd_riscv_dmem_we_i ), |
| .wbd_dmem_dat_o (wbd_riscv_dmem_dat_i ), |
| .wbd_dmem_sel_o (wbd_riscv_dmem_sel_i ), |
| .wbd_dmem_dat_i (wbd_riscv_dmem_dat_o ), |
| .wbd_dmem_ack_i (wbd_riscv_dmem_ack_o ), |
| .wbd_dmem_err_i (wbd_riscv_dmem_err_o ) |
| ); |
| |
| /********************************************************* |
| * SPI Master |
| * This is an implementation of an SPI master that is controlled via an AXI bus. |
| * It has FIFOs for transmitting and receiving data. |
| * It supports both the normal SPI mode and QPI mode with 4 data lines. |
| * *******************************************************/ |
| |
| spim_top |
| #( |
| `ifndef SYNTHESIS |
| .WB_WIDTH (WB_WIDTH) |
| `endif |
| ) u_spi_master |
| ( |
| .mclk (wb_clk_i ), |
| .rst_n (spi_rst_n ), |
| |
| .wbd_stb_i (wbd_spim_stb_o ), |
| .wbd_adr_i (wbd_spim_adr_o ), |
| .wbd_we_i (wbd_spim_we_o ), |
| .wbd_dat_i (wbd_spim_dat_o ), |
| .wbd_sel_i (wbd_spim_sel_o ), |
| .wbd_dat_o (wbd_spim_dat_i ), |
| .wbd_ack_o (wbd_spim_ack_i ), |
| .wbd_err_o (wbd_spim_err_i ), |
| |
| .events_o ( ), // TODO - Need to connect to intr ? |
| |
| .spi_clk (spim_clk ), |
| .spi_csn0 (spim_csn ), |
| .spi_csn1 ( ), |
| .spi_csn2 ( ), |
| .spi_csn3 ( ), |
| .spi_mode ( ), |
| .spi_sdo0 (spim_sdo0 ), |
| .spi_sdo1 (spim_sdo1 ), |
| .spi_sdo2 (spim_sdo2 ), |
| .spi_sdo3 (spim_sdo3 ), |
| .spi_sdi0 (spim_sdi0 ), |
| .spi_sdi1 (spim_sdi1 ), |
| .spi_sdi2 (spim_sdi2 ), |
| .spi_sdi3 (spim_sdi3 ), |
| .spi_en_tx (spi_en_tx ) |
| ); |
| |
| |
| sdrc_top |
| `ifndef SYNTHESIS |
| #(.APP_AW(WB_WIDTH), |
| .APP_DW(WB_WIDTH), |
| .APP_BW(4), |
| .SDR_DW(8), |
| .SDR_BW(1)) |
| `endif |
| u_sdram_ctrl ( |
| .cfg_sdr_width (cfg_sdr_width ), |
| .cfg_colbits (cfg_colbits ), |
| |
| // WB bus |
| .wb_rst_i (wb_rst_i ), |
| .wb_clk_i (wb_clk_i ), |
| |
| .wb_stb_i (wbd_sdram_stb_o ), |
| .wb_addr_i (wbd_sdram_adr_o ), |
| .wb_we_i (wbd_sdram_we_o ), |
| .wb_dat_i (wbd_sdram_dat_o ), |
| .wb_sel_i (wbd_sdram_sel_o ), |
| .wb_cyc_i (wbd_sdram_cyc_o ), |
| .wb_cti_i (wbd_sdram_cti_o ), |
| .wb_ack_o (wbd_sdram_ack_i ), |
| .wb_dat_o (wbd_sdram_dat_i ), |
| |
| |
| /* Interface to SDRAMs */ |
| .sdram_clk (sdram_clk ), |
| .sdram_resetn (sdram_rst_n ), |
| .sdr_cs_n (sdr_cs_n ), |
| .sdr_cke (sdr_cke ), |
| .sdr_ras_n (sdr_ras_n ), |
| .sdr_cas_n (sdr_cas_n ), |
| .sdr_we_n (sdr_we_n ), |
| .sdr_dqm (sdr_dqm ), |
| .sdr_ba (sdr_ba ), |
| .sdr_addr (sdr_addr ), |
| .pad_sdr_din (pad_sdr_din ), |
| .sdr_dout (sdr_dout ), |
| .sdr_den_n (sdr_den_n ), |
| .sdram_pad_clk (pad_sdram_clk ), |
| |
| /* Parameters */ |
| .sdr_init_done (sdr_init_done ), |
| .cfg_req_depth (cfg_req_depth ), //how many req. buffer should hold |
| .cfg_sdr_en (cfg_sdr_en ), |
| .cfg_sdr_mode_reg (cfg_sdr_mode_reg ), |
| .cfg_sdr_tras_d (cfg_sdr_tras_d ), |
| .cfg_sdr_trp_d (cfg_sdr_trp_d ), |
| .cfg_sdr_trcd_d (cfg_sdr_trcd_d ), |
| .cfg_sdr_cas (cfg_sdr_cas ), |
| .cfg_sdr_trcar_d (cfg_sdr_trcar_d ), |
| .cfg_sdr_twr_d (cfg_sdr_twr_d ), |
| .cfg_sdr_rfsh (cfg_sdr_rfsh ), |
| .cfg_sdr_rfmax (cfg_sdr_rfmax ) |
| ); |
| |
| |
| wb_interconnect u_intercon ( |
| .clk_i (wb_clk_i ), |
| .rst_n (wb_rst_n ), |
| |
| // Master 0 Interface |
| .m0_wbd_dat_i (wbd_riscv_imem_dat_i ), |
| .m0_wbd_adr_i (wbd_riscv_imem_adr_i ), |
| .m0_wbd_sel_i (wbd_riscv_imem_sel_i ), |
| .m0_wbd_we_i (wbd_riscv_imem_we_i ), |
| .m0_wbd_cyc_i (wbd_riscv_imem_stb_i ), |
| .m0_wbd_stb_i (wbd_riscv_imem_stb_i ), |
| .m0_wbd_dat_o (wbd_riscv_imem_dat_o ), |
| .m0_wbd_ack_o (wbd_riscv_imem_ack_o ), |
| .m0_wbd_err_o (wbd_riscv_imem_err_o ), |
| |
| // Master 1 Interface |
| .m1_wbd_dat_i (wbd_riscv_dmem_dat_i ), |
| .m1_wbd_adr_i (wbd_riscv_dmem_adr_i ), |
| .m1_wbd_sel_i (wbd_riscv_dmem_sel_i ), |
| .m1_wbd_we_i (wbd_riscv_dmem_we_i ), |
| .m1_wbd_cyc_i (wbd_riscv_dmem_stb_i ), |
| .m1_wbd_stb_i (wbd_riscv_dmem_stb_i ), |
| .m1_wbd_dat_o (wbd_riscv_dmem_dat_o ), |
| .m1_wbd_ack_o (wbd_riscv_dmem_ack_o ), |
| .m1_wbd_err_o (wbd_riscv_dmem_err_o ), |
| |
| // Master 2 Interface |
| .m2_wbd_dat_i (wbd_ext_dat_i ), |
| .m2_wbd_adr_i (wbd_ext_adr_i ), |
| .m2_wbd_sel_i (wbd_ext_sel_i ), |
| .m2_wbd_we_i (wbd_ext_we_i ), |
| .m2_wbd_cyc_i (wbd_ext_cyc_i ), |
| .m2_wbd_stb_i (wbd_ext_stb_i ), |
| .m2_wbd_dat_o (wbd_ext_dat_o ), |
| .m2_wbd_ack_o (wbd_ext_ack_o ), |
| .m2_wbd_err_o (wbd_ext_err_o ), |
| |
| |
| // Slave 0 Interface |
| .s0_wbd_err_i (1'b0 ), |
| .s0_wbd_dat_i (wbd_spim_dat_i ), |
| .s0_wbd_ack_i (wbd_spim_ack_i ), |
| .s0_wbd_dat_o (wbd_spim_dat_o ), |
| .s0_wbd_adr_o (wbd_spim_adr_o ), |
| .s0_wbd_sel_o (wbd_spim_sel_o ), |
| .s0_wbd_we_o (wbd_spim_we_o ), |
| .s0_wbd_cyc_o (wbd_spim_cyc_o ), |
| .s0_wbd_stb_o (wbd_spim_stb_o ), |
| |
| // Slave 1 Interface |
| .s1_wbd_err_i (1'b0 ), |
| .s1_wbd_dat_i (wbd_sdram_dat_i ), |
| .s1_wbd_ack_i (wbd_sdram_ack_i ), |
| .s1_wbd_dat_o (wbd_sdram_dat_o ), |
| .s1_wbd_adr_o (wbd_sdram_adr_o ), |
| .s1_wbd_sel_o (wbd_sdram_sel_o ), |
| .s1_wbd_we_o (wbd_sdram_we_o ), |
| .s1_wbd_cyc_o (wbd_sdram_cyc_o ), |
| .s1_wbd_stb_o (wbd_sdram_stb_o ), |
| |
| // Slave 2 Interface |
| .s2_wbd_err_i (1'b0 ), |
| .s2_wbd_dat_i (wbd_glbl_dat_i ), |
| .s2_wbd_ack_i (wbd_glbl_ack_i ), |
| .s2_wbd_dat_o (wbd_glbl_dat_o ), |
| .s2_wbd_adr_o (wbd_glbl_adr_o ), |
| .s2_wbd_sel_o (wbd_glbl_sel_o ), |
| .s2_wbd_we_o (wbd_glbl_we_o ), |
| .s2_wbd_cyc_o (wbd_glbl_cyc_o ), |
| .s2_wbd_stb_o (wbd_glbl_stb_o ) |
| ); |
| |
| glbl_cfg u_glbl_cfg ( |
| |
| .mclk (wb_clk_i ), |
| .reset_n (wb_rst_n ), |
| .device_idcode ( ), |
| |
| // Reg Bus Interface Signal |
| .reg_cs (wbd_glbl_stb_o ), |
| .reg_wr (wbd_glbl_we_o ), |
| .reg_addr (wbd_glbl_adr_o[5:2] ), |
| .reg_wdata (wbd_glbl_dat_o ), |
| .reg_be (wbd_glbl_sel_o ), |
| |
| // Outputs |
| .reg_rdata (wbd_glbl_dat_i ), |
| .reg_ack (wbd_glbl_ack_i ), |
| |
| // SDRAM Clock |
| |
| .sdram_clk (sdram_clk ), |
| |
| // reset |
| .cpu_rst_n (cpu_rst_n ), |
| .spi_rst_n (spi_rst_n ), |
| .sdram_rst_n (sdram_rst_n ), |
| |
| // Risc configuration |
| .fuse_mhartid (fuse_mhartid ), |
| .irq_lines (irq_lines ), |
| .soft_irq (soft_irq ), |
| .user_irq (user_irq ), |
| |
| // SDRAM Config |
| .cfg_sdr_width (cfg_sdr_width ), |
| .cfg_colbits (cfg_colbits ), |
| |
| /* Parameters */ |
| .sdr_init_done (sdr_init_done ), |
| .cfg_req_depth (cfg_req_depth ), //how many req. buffer should hold |
| .cfg_sdr_en (cfg_sdr_en ), |
| .cfg_sdr_mode_reg (cfg_sdr_mode_reg ), |
| .cfg_sdr_tras_d (cfg_sdr_tras_d ), |
| .cfg_sdr_trp_d (cfg_sdr_trp_d ), |
| .cfg_sdr_trcd_d (cfg_sdr_trcd_d ), |
| .cfg_sdr_cas (cfg_sdr_cas ), |
| .cfg_sdr_trcar_d (cfg_sdr_trcar_d ), |
| .cfg_sdr_twr_d (cfg_sdr_twr_d ), |
| .cfg_sdr_rfsh (cfg_sdr_rfsh ), |
| .cfg_sdr_rfmax (cfg_sdr_rfmax ) |
| |
| |
| ); |
| |
| |
| |
| endmodule : digital_core |
