`include "usbf_defines.v"module usbf_utmi_if( 		// UTMI接口部分的端口定義		phy_clk, rst,		DataOut, TxValid, TxReady,		RxValid, RxActive, RxError, DataIn,		XcvSelect, TermSel, SuspendM, LineState,		OpMode, usb_vbus,		// 內(nèi)部接口		rx_data, rx_valid, rx_active, rx_err,		tx_data, tx_valid, tx_valid_last, tx_ready,		tx_first,		// 其他接口		mode_hs, usb_reset, usb_suspend, usb_attached,		resume_req, suspend_clr);input			phy_clk;					//工作時鐘input			rst;						//復位output [7:0]	DataOut;					//輸出數(shù)據(jù)output		TxValid;					//有效的數(shù)據(jù)傳送input			TxReady;					//數(shù)據(jù)傳送就緒input	[7:0]		DataIn;					//輸入數(shù)據(jù)input			RxValid;					//有效的接收input			RxActive;					//接收準備就緒input			RxError;					//接收出錯output		XcvSelect;					//通信模式選擇output		TermSel;					//通信模式操作output		SuspendM;					//掛起標志input	[1:0]		LineState;					//節(jié)點連線狀態(tài)output [1:0]	OpMode;					//操作模式input			usb_vbus;					//USB總線狀態(tài)output [7:0]	rx_data;					//接收數(shù)據(jù)output		rx_valid, rx_active, rx_err;		//接收標志信號input	[7:0]		tx_data;					//傳送數(shù)據(jù)input			tx_valid;					//本次傳送是否有效input			tx_valid_last;				//上一次傳送是否有效output		tx_ready;					//數(shù)據(jù)傳送就緒input			tx_first;					//第一次傳送數(shù)據(jù)output		mode_hs;					//高速模式output		usb_reset;					//USB復位output		usb_suspend;				//USB掛起output		usb_attached;				//設備連接至USBinput			resume_req;				//恢復請求output		suspend_clr;				//掛起狀態(tài)清除//模塊內(nèi)部連線與寄存器資源定義reg	[7:0]		rx_data;					//接收數(shù)據(jù)字節(jié)寄存器reg			rx_valid, rx_active, rx_err;		//數(shù)據(jù)接收狀態(tài)寄存器reg	[7:0]		DataOut;					//輸出數(shù)據(jù)字節(jié)寄存器reg			tx_ready;					//數(shù)據(jù)傳送就緒標志寄存器reg			TxValid;					//有效數(shù)據(jù)傳送標志寄存器wire			drive_k;					//強制輸出reg			drive_k_r;					//數(shù)據(jù)接收操作的輸入寄存器行為描述`ifdef USBF_ASYNC_RESETalways @(posedge phy_clk or negedge rst)		`elsealways @(posedge phy_clk)					//沒有復位信號`endif	if(!rst)	rx_valid <= 1'b0;				//若發(fā)現(xiàn)復位信號，則數(shù)據(jù)接收無效	else		rx_valid <= RxValid;			//否則數(shù)據(jù)接收狀態(tài)與UTMI接口的狀態(tài)一致//數(shù)據(jù)接收狀態(tài)準備就緒，等待接收數(shù)據(jù)`ifdef USBF_ASYNC_RESETalways @(posedge phy_clk or negedge rst)`elsealways @(posedge phy_clk)`endif	if(!rst)	rx_active <= 1'b0;	else		rx_active <= RxActive;//數(shù)據(jù)接收出錯`ifdef USBF_ASYNC_RESETalways @(posedge phy_clk or negedge rst)`elsealways @(posedge phy_clk)`endif	if(!rst)	rx_err <= 1'b0;	else		rx_err <= RxError;//開始接收數(shù)據(jù)always @(posedge phy_clk)		rx_data <= DataIn;//數(shù)據(jù)發(fā)送操作的輸出/輸入寄存器行為描述//是否開始輸出數(shù)據(jù)always @(posedge phy_clk)	if(TxReady || tx_first)	DataOut <= tx_data;	else	if(drive_k)		DataOut <= 8'h00;		//若強制輸出，則輸出0x00//數(shù)據(jù)發(fā)送就緒狀態(tài)與UTMI接口部分一致always @(posedge phy_clk)	tx_ready <= TxReady;always @(posedge phy_clk)	drive_k_r <= drive_k;//有效的數(shù)據(jù)發(fā)送標志信號`ifdef USBF_ASYNC_RESETalways @(posedge phy_clk or negedge rst)`elsealways @(posedge phy_clk)`endif	if(!rst)	TxValid <= 1'b0;	else	TxValid <= tx_valid | drive_k | tx_valid_last | (TxValid & !(TxReady | drive_k_r));// Line Status Signaling & Speed Negotiation Block//usbf_utmi_ls	u0(		.clk(		phy_clk		),		.rst(		rst		),		.resume_req(	resume_req	),		.rx_active(	rx_active	),		.tx_ready(	tx_ready	),		.drive_k(	drive_k		),		.XcvSelect(	XcvSelect	),		.TermSel(	TermSel		),		.SuspendM(	SuspendM	),		.LineState(	LineState	),		.OpMode(	OpMode		),		.usb_vbus(	usb_vbus	),		.mode_hs(	mode_hs		),		.usb_reset(	usb_reset	),		.usb_suspend(	usb_suspend	),		.usb_attached(	usb_attached	),		.suspend_clr(	suspend_clr	)		);endmodule