7 7.1 7.2 7.3 7.4 7.5 FIRDSP7.6 IIRDSP7.7 FFTDSP

7.1 7.1.1 7.1.2 7.1.3 7.1.4 7.1.5 7.1.6 TMS320C54x7.1.7

7.1.1 PAGEN 57-1 PC RC BRC RSA REA

7-1 PAGEN

7.1.2 7-1

7-2

12ABABC EQ NEQ LEQ GEQ LT GTOVNOVTCNTCCNCBIONBIO

1 // AGTAOVAGTBOV 2/ TCCBIONTCCNC

7-1 BC subBLEQ ; B0sub CC startAGEQAOV ; A0 start RC NTC ; TC = 0

BC new, AGT, AOV AGTAOV A0,sub AGTAOV BC sub, AGT BC sub, AOV

7.1.3 PC

B[D] PC BACC[D] 16PC BC[D] PC BANG[D] 0PC FB[D] PCXPC FBACC[D] 23PCXPC

7-2 STM #88HAR0 LD #1000HA zhong SUB AR0A BC zhongAGTAOV #88HAR0 #1000HACC AAR0 A A>0 zhong,

7-3 STM #5,AR1 ; AR1=5 STM #10,AR0 ; AR0=10 loop: *AR1+ ; AR1=AR1+1 CMPR LT,AR1 ;AR1-AR0

7.1.4

CALL[D] PC CALA[D] ABPC CC[D] PC FCALL [D] XPCPCPCXPC FCALA [D] XPCPC23 PCXPC

PC C54x

RET[D] PC RETE[D] PC RETF[D] RTNPC RC[D] PC FCALL [D] XPC PC FCALA [D] XPC PC

ISR

7-4 STM #123HAR0 LD #456HAR1 CALL new LD AR116AnewMPY AR0AR1A RET #123HAR0 #456HAR1 new AR116A AR0AR1,A

C54xCPU RPT RPTZ 0 RPTB RPTRPTZRPTBBANZ7.1.5

RPTRPTZ1 N+1N16RCRPTRPTZRC65536 1

7-5x[8]={0,0,0,0,0,0,0,0} .bss x, 8 STM #x, AR1 LD #0, A RPT #7 STL A,*AR1+ .bss x, 8 STM #x, AR1 RPTZ A, #7 STL A, *AR1+ x[8]8071STL AAR1+7 RPTZ

2 RPTBRPTBDRPTBBRC RPTBSTMBRC

RSARPTB REARPTB

0ST1(BRAF)ST1 BRAF1 0~65535NBRC RSA REA

7-6x[8]1 .bss x, 8begin: LD #1,16,B STM #7,BRC STM #x,AR4 RPTB next-1 ADD *AR4,16,B,A STH A,*AR4+next: LD #0,B ;;1BH;,BRC=78;xAR4;;16BH;;B0 REA-1 7 RPTB

7-7 STM #L-1,AR7 1st: STM #M-1,BRC RPTB 2nd-1 RPT #N-1 2nd: BANZ 1st,*AR7-

7.1.6 TMS320C54x1 C54xINTRTRAPRESET ,1 1 2

:(IMR)(ST1)INTMTMS320C54x16(SINT15SINT0)

:IMRINTMTMS320C54x

7-9 C5402

C54xIFRIMR 2 . (1) IFR IFR,,IFR1,CPU C5402IFR:

15 141312111098 DMAC5DMAC4BXINT1BRINT1HPINTINT3

76543210TINT1DMAC0BXINT0BRINT0TINT0INT2INT1INT0

C54xIFR5 ~ 015~6 IFR1 INTR #K

2IMR

IMR IMR

15 141312111098 DMAC5DMAC4BXINT1BRINT1HPINTINT3

76543210TINT1DMAC0BXINT0BRINT0TINT0INT2INT1INT0

1 IFR11 3

C5402 INT3 ~ INT0 RSNMI BRINT0BXINT0BRINT1BXINT1() TINT0TINT1() DMAC4DMAC5DMA HPINT(HPI)

3 INTR(SINT0SINT30) TRAPINTRST1(INTM) RESET

CPU 3CPU 2 C54x INTM0 INTM=0 INTM=1 IMR1 IMR1,

CPU 3 PC PC PC

ISR PSHMMMR POPMMMR PSHD POPD.

ST1BRAFBRCBRC=0BRAF

7-2

4 128 C54xPMSTIPTR(9)2 =IPTR+(2) IPTR=0001HINT010H00C0H =0 00000001 100 0000 = 00C0H

7-3

IPTR=1FFH511FF80H ,CPU0FF80H IPTR 0001HIPTR0080H

.mmregs .def _c_int00STACK .usect "STACK",100ht0_cout .usect "vars",1 ; t0_flag .usect vars,1 ;XFt0_flag=1 XF=1 ;t0_flag=0XF=0TVAL .set1639;1640(10(61=1ms, ;t0_cout=10001ms(1000=1sTIM0.set0024H;0PRD0.set0025HTCR0.set0026H.data TIMES.int TVAL ;.text (timers.asm)

*******************************; _c_int00b startnopnopNMIrete ;nopnopnopSINT17.space 4*16 ;SINT18.space 4*16SINT19.space 4*16SINT20.space 4*16SINT21.space 4*16SINT22.space 4*16SINT23.space 4*16SINT24.space 4*16SINT25.space 4*16SINT26.space 4*16SINT27.space 4*16SINT28.space 4*16SINT29.space 4*16SINT30.space 4*16INT0rsbx intm ;0retenopnopINT1rsbx intm ;1retenopnopINT2rsbx intm ;2retenopnopTINT:bd timer ;nopnopnopRINT0:rete;0nopnopnop

XINT0:rete;0nopnopnop SINT6.space 4*16;SINT7.space 4*16;INT3:rete;3nopnopnop HPINT:rete ;nopnopnop RINT1:rete ;1nopnopnopXINT1:rete ;1nopnopnop******************************************start: LD #0,DP STM #STACK+100h,SP STM #07FFFh,SWWSR STM #1020h,PMST; 1000(1s) ST #1000,*(t0_cout) SSBX INTM; LD #TIMES,A READA TIM0 ; TIM,PRD READA PRD0 STM #669h,TCR0;TCR0 ; IMR, timer0 STM #8,IMR RSBX INTM ;WAIT:B WAIT*******************************************

;0timer:ADDM #-1,*(t0_cout);1 . RETE .end timers.cmd) timers.obj /* */ -o timers.out /**/ -m timers.map /*map*/ MEMORY /*MEMORY */ { PAGE 0 RAM1origin=1000h, length=500h PAGE 1 SPRAM1origin=0600h, length=20h PAGE 1 SPRAM2origin=0100h, length=200h } SECTIONS /*SECTIONS*/ { .text : >RAM1 .data : >RAM1 .vars : >SPRAM1 .STACK :>SPRAM2 }

7.1.7 DSP SPSP1SP1

C54x 1 2 3.cmd 1.

size .set 120 stack .usect STACKsize STM # stack + sizeSP RAM RAMSTACK120 # stack + sizeSP SP CALL pmad (SP)-1SP,(PC)+2TOSpmadPC RET (TOS)PC,(SP)+1SP

2. LD # -9224B STM # lengthAR1 MVMM SPAR4 loop STL B*AR4- BANZ loop*AR1- 0DBF8hB AR4SPAR4 DBF8DBF8DBF8DBF8DBF8DBF8AR4

RAM

DDDDDSPD

2. 6B140013SP 7AB3

RAM

AR4DBF8DBF8DBF8DBF8DBF8SPDBF8

C54x10 (1) MVDK Smemdmad MVKD dmadSmem MVDD XmemYmem2 22 21 17.2

(2) MMR MVDM dmadMMR MVMD MMRdmad MVMM MMRxMMRy 2 22 21 1(3) MVPD pmadSmem MVDP Smempmad READA Smem WRITA Smem 2 32 41 51 5

(4) PA/ PORTR PASmem PORTW SmemPA 2 22 2 RPT

1 .mmregs .def _c_int00 .dataTBL: .word0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,1 7,18,19 .word 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1PROM:.usect "PROM",20 .bss a,20 .bss x,20 .bss y,20DATA:.usect"DATA",20 .text

_c_int00 b start nop nopstart: STM #a,AR1;a[20]={0,1,2,3,4,5,6,7,8,9,10, ;11,12,13,14,15,16,17,18,19} RPT #39 ;x[20]={1,1,1,1,1,1,1,1,1,1 MVPD TBL,*AR1+ ;1,1,1,1,1,1,1,1,1,1} STM #x,AR2;x[20]y[20] STM #y,AR3 RPT #19 MVDD *AR2+,*AR3+

STM #a,AR1;a[20]PROM LD #PROM,A STM #19,AR3LOOPP: WRITA *AR1+ ADD #1,A,A BANZ LOOPP,*AR3- LD #PROM-1,A ;PROM20DATA STM#DATA,AR1 ST #19,BRC RPTB LOOP2 ADD #1,A,ALOOP2: READA *AR1+ WAIT: NOP B WAIT

2CCS C5000CCSFileNewSource FileFileSave7-5D:\Program Files\ti \myprojcets\mymovemymoveAssembly Source Files*.asm

3FileNewSource File mymove.obj -o mymove.out -m mymove.map MEMORY {PAGE 0:RAM: origin=1000h,length=800h RAM1:origin=2000h,length=300h PAGE 1: DARAM1: origin=0100h,length=100h DARAM2: origin=0200h,length=100h }

SECTIONS{ .data :>RAM PAGE 0.text :>RAM PAGE 0 PROM:>RAM1 PAGE 0.bss:>DARAM1 PAGE 1 DATA:>DARAM2 PAGE 1}FileSave7-5D:\Program Files\ti\myprojcets\mymovemymoveTI Command Language File*.cmd

4ProjectNewProject Creation7-6ProjectmymoveCCSmymove.pjt

7-5 7-6

5ProjectAdd Files to Projectmymove.asmmymove.asmProjectAdd Files to Projectmymove.cmd7-7mymove.asmmymove.asm

6.outProjectRebuild Allmymove.out

7.outFileLoad Programmymove.outRebuild AllDSPCCSDebugRunDebugStepIntoF8

8ViewMemory7-8Address0x0100OK.out

7.3 7.3.1 7.3.2

1.DSP1 16 16 QQ0Q1Q15Q 7.3.1

7-10 QS

2 C54x2161()Q15-Q 2(Q15) MSB LSB -1. 2-1 2-2 2-3 2-15 00000010.1010000021+2-1+2-3 = 2.625

Q152 32 76816 32 76816 32 76817-9 DSP

1 7FFFH 0.5 4000H 0.25 2000H 0 0000H -0.25 E000H -0.5 C000H -1 8000H132 768=7FFFH0.532 768=4000H0.2532 768=2000H032 768=0000H(0.2532 768)=E000H(0.532 768)=C000H(132 768)=8000H 0.907 .word 32 768*907/1000

21616 C54xADDADDCADDMADDSADDSADDCADDM C54xSUBSUBBSUBCSUBSSUBSSUBBSUBC QQ

7-8 x=5.625y=-0.625x+y : x=5.625Q3.125A00H y=-0.625Q.15B000H yQ3.123F600HF600H5A00H5000Hx+yQ3.125

316C54x32ABC54xTAB16C54xMPYU

FRCT RSBX FRCT LD x , T MPY y A STH A z_h STL A , z_l 16,16

4Q151632RAMQ15

0.5(-0.375) = -0.1875 0 1 0 0 0.5)1 1 0 1 -0.375)0 1 0 00 0 0 00 1 0 01 1 0 0 -0100) 1 1 1 0 1 0 0-0.1875)

-0.1875 = 1110100 7 811110100 = -0.09375 2 S x x x (Q3 S y y y (Q3 S S z z z z z z (Q6 11110100 1 11101000 -0.1875

FRCT SSBX FRCT MPY *AR2*AR3A STH A@Z 16Q15*Q15=Q15RNDMPYR1616

5 Q0Q15 1. 125Q15Q011.125Q14

1.1251.5 = 1.6875 01. 00100000000000 (1.125 ) Q1401. 10000000000000 (1.5 ) Q14 0001.1011000000000000000000000000 = 1.6875 Q28320001.1011000000000000000000000000001.1011000000000000000000000000016001.1011000000000 Q13 Q1422Q144Q131.6875216Q14 01.10110000000000 Q14

.title "suanshu.asm".mmregs .def start,_c_int00 .bss x1,1.bss x2,1 .bss y1,1.bss y2,1 .bss z1,1.bss z2,1.bss z3_h,1.bss z3_l,1.bss z4,1

v1.set 014H ; 20-----x1 v2 .set 036H ; 54 -----y1 v3.set 04000H ; 0.5(fraction)----x2 v4.set 00b548H ; -0.5837(fraction)-----y2

7-9C54Xz1=x1+y1z2x1-y1z3=x1y1z4=x2y2

_c_int00b start nopnop start: LD #x1 , DP ST #v1 , x1 ST #v2 , y1; * * * * * * * * * * test ADD * * * * * * * * * * * *LDx1 , A ; load x1 -> A ADDy1 , A ; A + y1 -> A STL A , z1 ; save A(low 16 bits) ->z1NOP; * * * * * * * * * * test SUB* * * * * * * * * * * *LDx1 , ASUB y1 , ASTLA,z2NOP

; * * * * * * * * * * test MPY (integer)* * * * * * * * * * * * RSBX FRCT ; LD x1 , T ; x1 -> T MPY y1 ,A ; x1*y1 -> A (result is 32 bit) STH A , z3_h ; 16 z3_h STLA , z3_l ; 16z3_l NOP ST #v3 , x2 ST #v4 , y2

; * * * * * * * * * * test MPY ((fraction) * * * * * * * * * * * * * ; * * * * * * * 0.5*(-0.58374)=-0.29187(0x0daa4) * * * * * * * *

SSBX FRCT ; LD x2 , 16 ,A ; load x2 into A (high 16 bits) MPYA y2 ; x2*y2 -> B, and y2 -> T STHB , z4 ; z4 nop end: B end

7-10y= ;*** ***;***a1=0.1 a2=0.2 a3=-0.3 a4=0.4 ***;***x1=0.8 x2=0.6 x3=-0.4 x4=-0.2*** .mmregs .def start,_c_int00 .bss x,4 .bss a,4 .bss y,1 .datatable: .word 1*32768/10 .word 2*32768/10 .word -3*32768/10

.word 4*32768/10 .word 8*32768/10 .word 6*32768/10 .word -4*32768/10 .word -2*32768/10 .text _c_int00b start nopnop start: SSBX FRCT STM#0,SWWSR STM #x,AR1 RPT#7 MVPD table,*AR1+ STM #x,AR2 STM #a,AR3 STM#y,AR4 RPTZ A,#3 MAC *AR2+,*AR3+,A STH A,*AR4 done: B done .end

C54x(SUBC)(RPT) SUBC Smem, src (src)-(Smem)

0 0 0 0 1 1 30011 0 0 0 0 1 0 1 0 10 0 0 0 0 3 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 0 0 1 1 0 1 0 0 0 0 1 1 0 0 0 1

8410/3(1)3 00001010 - 00011000 111100102 00010100 - 00011000 111111003

00101000 - 00011000 0001000041 00100001 - 00011000 0000100151000100110011=340001=14

1. ||

1. ||

1. ||

2. ||>||: 16384512 .bss num,1 .bss den,1 .bss quot,1 .datatable .word 16 384 .word 512 .textstart: STM #num,AR1 RPT #1 MVPD table,*AR1+ 16 384 512

2

2. ||>||: 16384512 LD @den,16,A MPYA @num ABS A STH A,@den LD @num,A ABS A RPT #15 SUBC @den,A XC 1,BLT NEG A STL A,@quot A31~16 (num)*A(32~16)B, A15~0 16

B

2. ||>||: 16384512SUBC

() () 16 384 512 0xC020 32 66*32 768/100(0.66) -33*32 768/100(-0.33) 0xFFFE -2

.title"chuf.asm" .mmregs .def start,_c_int00 .bssnum,1 .bssden,1 .bssquot,1 .datatable .word 4*32768/10 ;0.4 .word -8*32768/10 ;-0.8 .text _c_int00 b start nop nop7-110.4(-0.8)

start: STM #num,AR1 RPT #1 MVPD table,*AR1+ ;2 STM #den,AR1 LD *AR1-,16,A ;A(31-16) MPYA *AR1+ ;(num)*(A(32-16))->B ;(B) ABS A ; STH A,*AR1- ; LD *AR1+,16,A ;->A(32-16) ABS A ; RPT #14 ;15, SUBC *AR1,A XC 1,BLT ;B

7.4 7.4.1 7.4.2

DLD Lmem,dst DST src,Lmem DADD Lmem,src[,dst] DSUB Lmem,src[,dst] DRSUB Lmem,src[,dst] ;dst=Lmem ;Lmem=src ;dst=src+Lmem ;dst=src-Lmem ;dst=Lmem-src C54x32 7.4.1

1. DLD *AR3+,A A AR3 A AR3 6CAC0101BD900102 16

0000000000

0100

0100h6 C A C0101hB D 9 0

0000000000

0100

2. DLD *AR3+,A A AR3 A BD906CAC AR3 01020103 16

0000000000

0101

0100h6 C A C0101hB D 9 0

0000000000

0101

.title "ADD32".mmregs.def start,_c_int00 .bss xhi , 2,1,1.bss yhi , 2,1,1.bss zhi , 2,1, 1.datatable .long 13578468H .long 1020B30AH .text _c_int00b start nopnopstart: LD #xhi ,DPSTM#xhi,AR1RPT #3MVPDtable,*AR1+DLDxhi , ADADDyhi , ADSTA ,zhiEND: B END.end7-12Z32=X32+Y32

-o add32.out -m add32.map MEMORY {PAGE 0: RAM: origin=1000h,length=80h PAGE 1: DARAM1: origin=0100h,length=500h } SECTIONS { .text :>RAM PAGE 0 .data :>RAM PAGE 0 .bss :>DARAM1 PAGE 1 }

X64:Y64:x3 x2 x1 x0 y3 y2 y1 y0 +s1 s0 Cs3 s2 S64: S64=s3s2s1s0 s1s0=x1x0+y1y0 s3s2=x3x2+y3y2+CZ64:z3 z2 z1 z0 -w1 w0 Cw3 w2 W64: Z64=z3z2z1z0 w1w0=s1s0-z1z0 w3w2=s3s2-z3z2- C7-13W64=X64+Y64-Z64

.title "ADDSUB64".mmregs.def start,_c_int00 .bss x1 , 2 ,1,1.bss x3 , 2 ,1,1.bss y1 , 2 ,1,1.bss y3 , 1.bss y2 , 1.bss z1 , 2 ,1,1.bss z3 , 1.bss z2 , 1.bss w1 , 2 ,1,1.bss w3 , 2 ,1,1 table .long12345678H;x1x0.long02468ACEH;x3x2

.long22222222H;y1y0.word 1357H,2468H;y3,y2.long44444444H;z1z0.word 1020H,0B30AH;z3,z2 .text _c_int00b start nopnopstart: LD #x1 ,DPSTM#x1,AR1RPT #11MVPDtable,*AR1+DLD x1,A ; A = X1 X0DADD y1,A ; A= X1 X0 + Y1 Y0,C

DLD x3,B ; B = X3 X2

ADDCy2,B; B = X3 X2 + 00 Y2 + C ADD y3,16,B ; B = X3 X2 + Y3 Y2 + C DSUBz1,A; A= X1 X0 + Y1 Y0-Z1Z0C' DST A,w1; W1W0= X1 X0 + Y1 Y0-Z1Z0 SUBBz2,B; B = X3 X2 + Y3 Y2 + C - 00 Z2-C' SUBz3,16,B; B = X3 X2 + Y3 Y2 + C -Z3 Z2-C' DST B,w3; W3 W2= X3 X2 + Y3 Y2 + C - Z3 Z2-C'END:B END.end

7-1432W64=X32Y32x1 x0 y1 y0 x0y0 x1y0 y1x0 y1x1 w0 w1 w2 w3 UU SU SU SS w0=x0y0L w1=x0y0H+x1y0L+y1x0L w2=x1y0H+y1x0H+y1x1L w3=y1x1H UUSUSSMPYU Smem,dst;dst=U(T)U(Smem)MACSU Xmem,Ymem,src;src=U(Xmem)S(Ymem)+srcMAC Xmem,Ymem,src;src=S(Xmem)S(Ymem)+src

STM #x0,AR2 STM #y0,AR3 LD *AR2,T MPYU *AR3+,A STL A,@w0 LD A,-16,A MACSU *AR2+,*AR3-,A MACSU *AR3+,*AR2,A STL A,@w1 LD A,-16,A MAC *AR2,*AR3,A STL A,@w2 STH A,@w3;AR2x0;(w3)A;AR3y0;T=x0;A=u(x0)u(y0);(w0)A;A=x0y0H;A=y1x0+x0y0H;A=x1y0+y1x0+x0y0H;(w1)A;A=y1x0H+x1y0H;A=y1x1+y1x0H+x1y0H;(w2)AAR2AR3AR3AR2AR3AR3

RAM

x0x1y0y1w0w1w2w3

7.4.2 DE D E /

LD||MAC[R] LD||MAS[R] LD Xmem,dst1 ||MAC[R] Ymem,[,dst2] dst1=Xmem

ST||LD ST src,Ymem ||LD Xmem,dst Ymem=src>>(16-ASM); dst=Xmem

ST||MPY ST||MAC[R] ST||MAS[R] ST src,Ymem ||MAC[R] Xmem,dst Ymem=src>>(16-ASM); dst=dst+T*Xmem

ST||ADD ST||SUB ST src,Ymem ||ADD Xmem,dst Ymem=src>>(16-ASM); dst=dst+Xmem /

ASM

7-15z=x+yf=e+d bss x,3 bss d,3 STM #x,AR5 STM #d,AR2 LD #0,ASM LD *AR5+,16,A ADD *AR5+,16,A ST A,*AR5 ||LD *AR2+,B ADD *AR2+,16,B STH B, *AR2 bss x,3 bss d,3 STM #x,AR5 LD #0,ASM LD *AR5+,16,A ADD *AR5+,16,A ST A,*AR5 ||LD *AR2+,B ADD *AR2+,16,B STH B, *AR2 STM #d,AR2

xyzdef

7.5 FIRDSP7.5.1 7.5.2 7.5.3 FIRDSP

DSPMACFIRIIRDSPFIRh(0)h(1) ...h(N-1)X(n)nn 7-1

7-10FIR7-10 FIR 7-2

Z-1

Z-1

h(0)

h(1)

h(2)

h(N-2)

h(N-1)

y(n)

x(n)

Z-1

7.5.1 n=NFIRNNN=67-11

7-11 N=6

7.5.2 7-12FIRNFIRNN

7-12 FIR

7-12FIR1FIRFIR1500Hz1dB2000Hz40dB8000HzFIRMATLAB

2SimulatorCCSSimulatorx(n)Fs8000Hz1000Hz2500Hz2500Hz1000Hz

3FIRFIRfir.asm************FIR fir.asm*****************.mmregs.global start.def start,_c_int00INDEX .set 1KS.set 256 ;COEF_FIR.sect "COEF_FIR";FIRN .set 17 ;FIR

.word 0,158,264,-290,-1406,-951,3187,9287,12272.word9287,3187,-951,-1406,-290,264,158,0.dataINPUT.copy "firin.inc";0x2400OUTPUT.space1024;0x2500COEFTAB .usect"FIR_COEF",NDATABUF.usect"FIR_BFR",NBOS.usect"STACK",0FhTOS.usect"STACK",1 .text.asgAR0,INDEX_P

.asgAR4,DATA_P;x(n).asgAR5,COEF_P;FIR.asg AR6,INBUF_P;.asgAR7,OUTBUF_P ;FIR_c_int00b start nopnopstart: SSBxFRCT ;FRCT()MVPD#COEF_FIR,*COEF_P+STM#INDEX,INDEX_P

STM#DATABUF,DATA_P;RPTZA,#N-1STLA,*DATA_P+STM#(DATABUF+N-1),DATA_P;x[n-(N-1)]STM#COEFTAB,COEF_PSTM #COEFTAB,COEF_P;FIRRPT #N-1 FIR_TASK:STM#INPUT,INBUF_PSTM #OUTPUT,OUTBUF_P

STM#KS-1,BRCRPTBDLOOP-1STM#N,BK;FIRLD*INBUF_P+,A;FIR_FILTER: ;FIRSTLA,*DATA_P+%;RPTZA,N-1MAC*DATA_P+0%,*COEF_P+0%,ASTHA,*OUTBUF_P+LOOP:EENDB EEND.end

4FIRfir.cmdfir.obj-m fir.map-ofir.outMEMORY{PAGE 0:ROM1(RIX):ORIGIN=0080H,LENGTH=100HPAGE 1:INTRAM1(RW) :ORIGIN=2400H,LENGTH=0200H INTRAM2(RW) :ORIGIN=2600H,LENGTH=0100H

INTRAM3(RW) :ORIGIN=2700H,LENGTH=0100HB2B(RW):ORIGIN=0070H,LENGTH=10H }SECTIONS{.text :{}>ROM1PAGE 0.data : {}>INTRAM1 PAGE 1FIR_COEF: {}>INTRAM2 PAGE 1FIR_BFR : {}>INTRAM3 PAGE 1.stack : {}>B2B PAGE 1 }

5CCS1CCSfirfir.out 27-13~7-1537-167-17

7-13 Graph

7-14 7-15

7-16 7-17

7.5.3 FIRDSP1NewN/2=4N=8Old4N/2AR2New AR3Old 7-18

2.(AR2)+(AR3)AHA(AR2)-1AR2(AR3)-1AR33B0N/2i=0123(AH)ai+(B)BPAR1(AR2)+(AR3)AHAR2 AR31BH

4AR2AR3NewOld New Old 7-18Old 15New 25

7.6 IIRDSPIIRH(z)

IIR7-197-207-47-3

7-19 IIR

7-20

7-15Fs =16kHz3.2kHz

N=3 wn =0.4000 0.6000 b0=0.0114747a0=1.000000 b1=0 a1=0 b2=-0.034424 a2=2.13779 b3=0 a3=0 b4=0.034424 a4=1.76935 b5=0 a5=0 b6=-0.0114747 a6=0.539758

2CCSSimulatorx(n) #include #include void main() { int i; double f[256]; FILE *fp; if((fp=fopen("iirin.inc","wt"))==NULL) { printf("can't open file! \n"); return; }

fprintf(fp,"INPUT: .sect %cINPUT %c\n",'"','"');for(i=0;i

iirin.incINPUT:.sect"INPUT".word0.word25486.word-15136.word-314.word-11585.word19580.word6270.word-30006.word16383DSP.copyiirin.incIIR

3IIRIIRdiir.asm********IIR********** .title "diir.asm" .mmregs .globalstart .def start,_c_int00 N .set16 .copy "iirin.inc";x(n) table;IIR .word 63 0 -188 0 188 0 -63 .word 0 11675 0 9663 0 2948 .data

BN .usect "BN",N+1AN .usect "AN",N+1INBUF .usect"INBUF",256;0x2400OUTPUT .usect "OUTPUT",256;0x2600 .text .asgAR0,INDEX_P .asgAR2,XN_P .asgAR3,ACOFF_P .asgAR4,YN_P .asgAR5,BCOFF_P _c_int00 b start nop nopstart:SSBXFRCT

SSBX OVMSSBX SXM STM#BN+N,AR1RPT#NMVPD#table,*AR1- biSTM#AN+N-1,AR1RPT#N-1MVPD#table+N+1,*AR1- aiSTM#OUTPUT,AR1RPTZA,#255STL A,*AR1+ STM#INBUF,AR1RPT#255MVPD#INPUT,*AR1+

STM#OUTPUT,YN_P STM#INBUF,XN_P STM#N-1,INDEX_P STM#255,BRC RPTB LOOP-1IIR: SUB A,A STM#BN,BCOFF_P STM#AN,ACOFF_P RPT#N-1 MAC*XN_P+,*BCOFF_P+,A MAC*XN_P,*BCOFF_P,A

MAR *XN_P-0 AR2x(n-N) RPT #N-1 MAC*YN_P+,*ACOFF_P+,A STHA,*YN_P-0y(n)LOOP:EEND B EEND .end

4IIRdiir.cmddiir.obj-o diir.out-m diir.mapMEMORY{ PAGE 0: ROM: ORIGIN=0080H, LENGTH=1000H PAGE 1: SPRAM: ORIGIN=0060H,LENGTH=0020H DARAM: ORIGIN=0080H, LENGTH=1380H RAM1: ORIGIN=2400H, LENGTH=0200H RAM2: ORIGIN=2600H, LENGTH=0200H}SECTIONS

{.text:>ROM PAGE 0.data:>DARAM PAGE 1BN:>DARAM PAGE 1AN:>DARAM PAGE 1 INBUF:>RAM1 PAGE 1OUTPUT:>RAM2 PAGE 1}

7.7 FFTDSP7.7.1 FFT7.7.2 FFT7.7.3 FFT7.7.4

7.7.1 FFT7-21NFFTDATANFFT7-22

FFTFFTRPRMIPIM2NFFT2N=256256DFT7-24

7.7.2 FFTCmdata.incDSP.copymdata.inc7-127-15INPUTINPUTmdata.dat 1651 1 0 1 0 0x1f400x1f40

7.7.3 FFT7-16256FFTDSP256FFT ************************************* *Radix-2,DIT,Real-input FFT Program * * fft.asm * ************************************* .mmregs .global reset,start,sav_sin,sav_idx,sav_grp .def start,_c_int00 .data

DATA .space 1024.copy "mdata1.inc"; mdata1.incINPUT N.set128; LOGN.set7 ;sav_grp.usect "tempv",3 ;sav_sin.setsav_grp+1;sav_idx.setsav_grp+2OUTPUT.usect "OUTPUT",256 ;BOS.usect"stack",0Fh;TOS.usect"stack",1 .copy "twiddle1.inc" ;twiddle1.incTWI1

.copy "twiddle2.inc" ;twiddle2.incTWI2.text_c_int00b start nopnopstart:STM#TOS,SPLD#0,DPSSBXFRCT *****************************************************************

7.7.4 0x2000256CCSViewGraphTime/Frequency0x9000256Display TypeFFT MagnitudeSingle Time7-250x2000pagedataSampling Rate256Display TypeSingle Time7-25

7-25