delay_fuc.asm

基于TMS320C5509A的音频收发回放程序,汇编语言

		
		.global 	DelayClock
		.global		Delay30ns
		.global		Delay50ns
		.global		Delay01us
		.global		Delay05us
		.global		Delay1us
		.global		Delay05ms
		.global		Delay1ms
		.global		Delay100ms,Delay50us,Delay350us

		
		.mmregs
		
		.text
************************Delay Program*******************************************						


**********************************Delay use 100M DSPCLK****************************
DelayClock:		nop
			nop
			ret
Delay30ns:		rpt 	#3			;delay 30ns
			nop
			ret
Delay50ns:		rpt 	#5			;delay 50ns
			nop
			ret

Delay01us:		rpt	#10			;generate 5M CLK
			nop
			ret
			
Delay05us:		rpt	#50		;generate 1M clk(0.5T)			
			nop
			ret
			
Delay1us:		rpt	#100		;generate 500K clk
			nop
			ret
Delay50us:		rpt	#4800		;generate 500K clk
			nop
			ret
			
Delay05ms:		rpt 	#02350h		;generate 1K clk
			nop
			ret
Delay350us: rpt  #0f375h
            nop
            ret
			
Delay1ms:		rpt 	#0ffffh		;generate 0.5K clk
			nop
			rpt	#0ffffh
			nop
			rpt #4000h
			nop
			
			ret
Delay100ms:	call 	Delay1ms1

			RET
Delay1ms1:call 	Delay1ms11 
		call 	Delay1ms11
		
		RET	
Delay1ms11:call 	Delay1ms111
		call 	Delay1ms111
		call 	Delay1ms111
		call 	Delay1ms111
		RET
Delay1ms111:call 	Delay1ms
		call 	Delay1ms
		call 	Delay1ms
		call 	Delay1ms
		call 	Delay1ms
		call 	Delay1ms
		RET
									
********************************************************************************

		.end