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//-----------------------------------------------------------------------------
// Title : CAN 2.0B Controller
// Project : CAN Protocol Controller
//-----------------------------------------------------------------------------
// File : can_20b_controller.v
// Author : XXX.ai
// Created : 2023-07-15
//-----------------------------------------------------------------------------
// Description : CAN 2.0B Controller implementation based on CAN-CTRL spec
// Supports standard and extended frame formats
// Includes bit timing logic, protocol state machine, and buffers
//-----------------------------------------------------------------------------

module can_20b_controller (
// Clock and Reset
input wire clk, // System clock
input wire rst_n, // Active low reset

// CAN Bus Interface
input wire rxd, // CAN bus receive input
output reg txd, // CAN bus transmit output

// Host Interface
input wire [7:0] host_addr, // Address bus
input wire [31:0] host_data_in, // Data input bus
output reg [31:0] host_data_out, // Data output bus
input wire host_cs_n, // Chip select (active low)
input wire host_rd_n, // Read enable (active low)
input wire host_wr_n, // Write enable (active low)
output wire host_irq, // Interrupt request

// Status outputs
output wire bus_off, // Bus off status
output wire error_passive, // Error passive status
output wire error_active // Error active status
);



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ÂÂ 2025-07-16, 09:08 AM #87
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