at89c2051控制lmx2326（程序）.asm

基于单片机控制锁相环的程序设计

; This section of code is to program LMX2326 Frequency Synthesizer using
; ATMEL AT89C2051 (20 pin) microcontroller at 2.225 GHz

        $MOD51
        ORG 000H
        ; P3.0 ATTACHED TO CLOCK
        ; P3.1 ATTACHED TO DATA
        ; P3.2 ATTACHED TO LE

        CLOCK EQU P3.0
        DAT   EQU P3.1
        EN    EQU P3.2

          
        
IN:     MOV P3,#00H

        
        ; THE SEQUENCE OF PROGRAMMING HAS BEEN TAKEN FROM NATIONAL SEMI-       [规画的序列从国立半导体 " 编码载入程序 " 软件已经被轮流 (序列是 R ， N ， F)]
        ; CONDUCTOR'S "CODE LOADER" SOFTWARE (SEQUENCE IS R,N,F)



 ;**** DATA FOR THE REGISTERS R,N AND F, STARTING FROM LOCATION 20H ******[为寄存器 R ， N 及 F 的数据, 来自位置 20 H 的出发]


        ; DATA FOR "R" REGISTER OF PLL******************************[为 " R" PLL 的寄存器的数据]

        MOV 20H,#00H
        MOV 21H,#00H
        MOV 22H,#0A0H   ; R=40

        ;DATA FOR "N" REGISTER OF PLL******************************[为 " N" PLL 的寄存器的数据]

        MOV 23H,#10H
        MOV 24H,#8BH 
        MOV 25H,#11H    ;N=8900

                  
        ; DATA TO "FUNCTION LATCH FOR INITIALIZATION" (C1=0, C2=1)*********[数据到 " 功能门闩对于设定初值"(C1=0,C2=1)]


        MOV 26H,#00H
        MOV 27H,#00H
        MOV 28H,#92H   ;DIGITAL LOCK DETECT ENABLED, PHASE DETECTOR*****************[ 数传锁发现能够, 状态发现者有两极是积极的]
                       ;POLARITY IS POSITIVE


        ; THERE ARE 3 STREAMS OF DATA, ONE FOR R, ONE FOR N AND ONE FOR F.*********************[; 有数据的 3条水流, 一对于 R, 一对于 N 及一对于 F。
        ; 每上述的蒸气让 3个位元组每个。]
        ; EACH OF THE ABOVE MENTIONED STEAMS HAS 3 BYTES EACH.

  ;****** DATA IS SENT TO PLL SYNCHRONOUS SERIALLY *****************[数据被送到 PLL 同时的连续地]
  ;****** USING P1.0 AS CLOCK, P1.1 AS DATA AND P1.2 AS LE *********[以 P1.0 作为克拉克, 如 LE 的如数据及 P1.2 的 P1.1]


        MOV R3,#03H ; TOTAL NO. OF DATA STREAMS TO BE SENT******************[数据水流的总号码被送]
                    ; TO THE PLL (ONE FOR "R",ONE FOR "N" AND ONE FOR "F")************[到 PLL( 一对于 " R", 一为 " N" 及一对于 " F")]

        MOV R0,#20H ; ADDRESS OF THE FIRST BYTE OF DATA, DATA WAS PUT IN************[数据的第一个位元组的住址, 数据被提出记忆来自位置 20 H 的出发]
                    ; THE MEMORY STARTING FROM LOCATION 20H    
        
STA:    MOV R2,#03H ;TOTAL NO. OF DATA BYTES IN ONE STREAM***************[一条水流的数据位元组的总号码]

INIT:   MOV R1,#08H ;8 BITS IN ONE DATA BYTE*************[8 一个数据位元组的一点点]
        
        CLR EN    ;CLR "LE" PIN OF PLL**************[CLR" LE" PLL 的大头针]
        
REP:    MOV  A,@R0   ;DATA BYTE IS TRANSFERRED INTO ACC.*********[数据位元组进入自动燃烧控制之内被转移。]

GOON:   MOV  C,ACC.7 ;NEXT DATA "BIT" IS PUT ON P1.1*************[下个数据 " 一点点 " 被穿上 P1.1]
        MOV  DAT,C
        RL   A       ;ROTATE TO PUT DATA THE MOVE THE NEXT DATA BIT TO
                     ;ACC.7 POSITION. SO THAT IT SHOULD BE THE NEXT BIT
                     ;TO BE TRANSMITTED********[替换放数据移动对自动燃烧控制的下数据一点点。7 位置。 以便资讯科技应该是下一点点被传输]

        CALL DELAY2
        
        
        SETB CLOCK   ;CLOCK IS TRIGGERED TO LATCH THE DATA******[克拉克被引起以闩栓住数据]
        CALL DELAY2
        CLR  CLOCK
        CALL DELAY2

        CLR DAT      ;DATA BIT IS SET TO LOW AFTER BEING LATCHED**********[数据一点点在被以闩栓住之后被设定成低点]

        CALL DELAY2

        DJNZ R1,GOON
        INC  R0
        DJNZ R2,INIT ;WHEATHER 3 BYTES OF ONE STREAM GONE?**************[一个的 WHEATHER 3 位元组流出离去?]

        SETB EN      ;IF YES, TRIGGER "LE" TO LATCH THE DATA 
        CALL DELAY2  ;TO THE APPROPRIATE REGISTER***********[如果是的,引起 " LE" 以闩栓住对适当的寄存器的数据]
        CLR  EN
        CALL DELAY2

        DJNZ R3,STA ;WHEATHER 3 STREAMS OF DATA GONE?**********[;WHEATHER 3 不见了的数据流出?]
                    

        JMP IN     ;IF YES, THEN RELOAD **********[如果是的, 然后再装货]
                    


        ;*************** FROM NOW ON DELAYS STARTS ************************[从现在开始延迟开始]
        ;*************** WHICH HAVE BEEN CALLED THROUGHT THE PROGRAM ******[哪一已经被认为 THROUGHT 是计画]


DELAY1: MOV 72H,#10     ;A DELAY OF 10 msec
        MOV 71H,#87

TT1:    DJNZ 71H,TT1
        DJNZ 72H,TT1

        RET

DELAY:  MOV 6DH,#180    ;A DELAY OF 100 msec
        MOV 6CH,#72
         
TT:     DJNZ 6CH,TT
        DJNZ 6DH,TT

        RET

         
DELAY3: MOV 70H,#8      ;A DELAY OF 1 sec
        MOV 6FH,#8
        MOV 6EH,#236
         
TT3:    DJNZ 6EH,TT3
        DJNZ 6FH,TT3
        DJNZ 70H,TT3
        
        RET

     
DELAY4: MOV 6BH,#36      ;A DELAY OF 5 sec
        MOV 6AH,#40
        MOV 69H,#176
         
TT4:    DJNZ 69H,TT4
        DJNZ 6AH,TT4
        DJNZ 6BH,TT4
        
        RET

DELAY2: MOV 70H,#43     ; A DELAY OF 0.1 msec
TT2:    DJNZ 70H,TT2
        RET


        END