usiecntrdef.v

来自「USBRTL电路的VHDL和Verilog代码」· Verilog 代码 · 共 26 行

/******************************************
	Filename: 	siecntrdef.v 1.7
******************************************/


// one-hot state machine deinitions for cntr states
parameter [2:0] 
	CNTRIDLE =	3'b000,
	CNTRACTIVE =	3'b001,
	CNTRSLEEP =	3'b010,
	CNTRINACTIVE =	3'b011,
	CNTRTURNAROUND =	3'b100,
	CNTRSE0 =	3'b101;

parameter [15:0]
	MAXINACTIVE = 16'h8CA0;	// 36,000 decimal is 8CA0 hex

parameter [15:0]
	MAXSOF = 16'h2EE5;	// 12,000 decimal (2ee0) plus 5 is 2EE5 hex

parameter [4:0]
	MAXTURNAROUND = 5'h11;		// 17 decimal is 11 hex

parameter [5:0]
	MAXSE0 = 8'H21;			// look for 33 for reset