usbf_top.v

usb的verilog 代码。对理解usb的原理有很大帮助

		.mdout(			mdout			),
		.mdin(			mdin			),
		.mwe(			mwe			),
		.mreq(			mreq			),
		.mack(			mack			),
		.fa(			funct_adr		),
		.dma_in_buf_sz1(	dma_in_buf_sz1		),
		.dma_out_buf_avail(	dma_out_buf_avail	),
		.idin(			idin			),
		.ep_sel(		ep_sel			),
		.match(			match			),
		.buf0_rl(		buf0_rl			),
		.buf0_set(		buf0_set		),
		.buf1_set(		buf1_set		),
		.uc_bsel_set(		uc_bsel_set		),
		.uc_dpd_set(		uc_dpd_set		),
		.int_buf1_set(		int_buf1_set		),
		.int_buf0_set(		int_buf0_set		),
		.int_upid_set(		int_upid_set		),
		.int_crc16_set(		int_crc16_set		),
		.int_to_set(		int_to_set		),
		.int_seqerr_set(	int_seqerr_set		),
		.out_to_small(		out_to_small		),
		.csr(			csr			),
		.buf0(			buf0			),
		.buf1(			buf1			),
		.frm_nat(		frm_nat			),
		.pid_cs_err(		pid_cs_err		),
		.nse_err(		nse_err			),
		.crc5_err(		crc5_err		)
		);

// Memory Arbiter
usbf_mem_arb	#(SSRAM_HADR)
	u2(	.phy_clk(	phy_clk_pad_i	),
		.wclk(		clk_i		),
		.rst(		rst		),

		.sram_adr(	sram_adr_o	),
		.sram_din(	sram_data_i	),
		.sram_dout(	sram_data_o	),
		.sram_re(	sram_re_o	),
		.sram_we(	sram_we_o	),

		.madr(		madr		),
		.mdout(		mdin		),
		.mdin(		mdout		),
		.mwe(		mwe		),
		.mreq(		mreq		),
		.mack(		mack		),

		.wadr(		ma_adr[SSRAM_HADR + 2:2]	),
		.wdout(		ma2wb_d		),
		.wdin(		wb2ma_d		),
		.wwe(		ma_we		),
		.wreq(		ma_req		),
		.wack(		ma_ack		)
		);


// SSRAM
/*

		The SSRAM is now external to the USB Function core

ssram	u3(	.clk(		phy_clk		),
		.rst(		rst		),
		.adr(		sram_adr	),
		.din(		sram_din	),
		.dout(		sram_dout	),
		.re(		sram_re		),
		.we(		sram_we		)
		);
*/

// Register File 
usbf_rf #(SSRAM_HADR)
	u4(	.clk(			phy_clk_pad_i		),
		.wclk(			clk_i			),
		.rst(			rst			),

		.adr(			ma_adr[8:2]		),
		.re(			rf_re			),
		.we(			rf_we			),
		.din(			wb2rf_d			),
		.dout(			rf2wb_d			),

		.inta(			inta_o			),
		.intb(			intb_o			),
		.dma_req(		dma_req_o		),
		.dma_ack(		dma_ack_i		),
		.idin(			idin			),
		.ep_sel(		ep_sel			),
		.match(			match			),
		.buf0_rl(		buf0_rl			),
		.buf0_set(		buf0_set		),
		.buf1_set(		buf1_set		),
		.uc_bsel_set(		uc_bsel_set		),
		.uc_dpd_set(		uc_dpd_set		),
		.int_buf1_set(		int_buf1_set		),
		.int_buf0_set(		int_buf0_set		),
		.int_upid_set(		int_upid_set		),
		.int_crc16_set(		int_crc16_set		),
		.int_to_set(		int_to_set		),
		.int_seqerr_set(	int_seqerr_set		),
		.out_to_small(		out_to_small		),
		.csr(			csr			),
		.buf0(			buf0			),
		.buf1(			buf1			),
		.funct_adr(		funct_adr		),
		.dma_in_buf_sz1(	dma_in_buf_sz1		),
		.dma_out_buf_avail(	dma_out_buf_avail	),
		.frm_nat(		frm_nat			),
		.utmi_vend_stat(	VStatus_pad_i		),
		.utmi_vend_ctrl(	VControl_pad_o		),
		.utmi_vend_wr(		VControl_Load_pad_o	),
		.line_stat(		LineState_pad_i		),
		.usb_attached(		usb_attached		),
		.mode_hs(		mode_hs			),
		.suspend(		usb_suspend		),
		.attached(		usb_attached		),
		.usb_reset(		usb_reset		),
		.pid_cs_err(		pid_cs_err		),
		.nse_err(		nse_err			),
		.crc5_err(		crc5_err		),
		.rx_err(		rx_err			),
		.rf_resume_req(		rf_resume_req		)
		);


// WISHBONE Interface
usbf_wb	u5(	.phy_clk(	phy_clk_pad_i		),
		.wb_clk(	clk_i		),
		.rst(		rst		),
		.wb_addr_i(	wb_addr_i	),
		.wb_data_i(	wb_data_i	),
		.wb_data_o(	wb_data_o	),
		.wb_ack_o(	wb_ack_o	),
		.wb_we_i(	wb_we_i		),
		.wb_stb_i(	wb_stb_i	),
		.wb_cyc_i(	wb_cyc_i	),

		.ma_adr(	ma_adr		),
		.ma_dout(	wb2ma_d		),
		.ma_din(	ma2wb_d		),
		.ma_we(		ma_we		),
		.ma_req(	ma_req		),
		.ma_ack(	ma_ack		),

		.rf_re(		rf_re		),
		.rf_we(		rf_we		),
		.rf_dout(	wb2rf_d		),
		.rf_din(	rf2wb_d		)
		);


///////////////////////////////////////////////////////////////////
//
// Initialization
// This section does not add any functionality. It is only provided
// to make sure that the core is configured properly and to provide
// configuration information for simulations.
//

// synopsys translate_off
integer 	ep_cnt, ep_cnt2;
reg	[15:0]	ep_check;
initial
   begin
	$display("\n");
	ep_cnt = 1;
	ep_cnt2 = 0;
	ep_check = 0;

`ifdef	USBF_HAVE_EP1	
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP2	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP3	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP4	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP5	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP6	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP7	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP8	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP9	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP10	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP11	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP12	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP13	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP14	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif
ep_cnt2 = ep_cnt2 + 1;
`ifdef	USBF_HAVE_EP15	
	if(!ep_check[ep_cnt2-1])
		$display("ERROR: USBF_TOP: Endpoint %0d not defined but endpoint %0d defined", ep_cnt2, ep_cnt2+1);
	ep_cnt = ep_cnt + 1;
	ep_check[ep_cnt2] = 1;
`endif

	$display("");
	$display("INFO: USB Function core instantiated (%m)");
	$display("      Supported Endpoints: %0d (0 through %0d)",ep_cnt, ep_cnt-1);
	$display("      WISHBONE Address bus size: A%0d:0", `USBF_UFC_HADR );
	$display("      SSRAM Address bus size: A%0d:0", SSRAM_HADR );
	$display("      Buffer Memory Size: %0d bytes", (1<<SSRAM_HADR+1) * 4 );
	$display("");

   end

// synopsys translate_on

endmodule