TMS320C54x的软硬件应用

1、0 )()()(110ninyainxbnyMiiNii )()(10Niiinxbny )()()(10NiiizbzXzYzHz-1-1z-1-1 +x(n)y(n)x(n-1)x(n-N+1)b0b1bN-2N-2bN-1N-1z-1-1 )1()()(120NiiiNnxinxbny )(2nnjndeCH112d)(21njdneHC10d)2cos()(nHCdn )(2QQnnjnaeCH )(QQnnnazCH )()(QQnQQnQnnnnQaQzCzCzzHzzH )(0220QiQiiiQiiQzCzCzH )(10NiiizbzH )()(10Niiinxbny10d)

2、2cos()(nHCdn 2)/(2sinnffnCscn1 11 1fc1 1f0 00 0f0 0ffc 2)/(2sin)(nffnnCscn1 11 1fc11 1f0 00 0f0 0ffc1fc2fc2 2)/(2sin2nffnCscnnffn-sc2)/(sin2 11 11 1fc11 1f0 00 0f0 0ffc1fc2fc2nffnnCscn2)/(2sin)(2 2)/(sin2 1nffn-sc缓冲区顶部缓冲区顶部缓冲区底部缓冲区底部) )( (inxbnyii70)() )( (inxbnyii70)() )( (inxbnyii1170)() )( (inxbn

3、yii70)() )( (inxbnyii70)( .word 4 .word 4* *32768/1032768/10y(n)x(n)x(n-3)x(n-2)x(n-1)x(n-4)x(n-5)x(n-6)x(n-7)b0b1b2b3 )()()(M1iiN0iiinyainxbnyNiiiN1NNN1NNpzzzCazazbzbzbzH1110)(z-1z-1z-1z-120)()(iiinwbny21)()()(jjjnwanxnw2021)()()( ijjijnyainxbny-+x(n)y(n) + + + + + + +H1(z)H2(z)Hk(z).11zzsssz112tan

4、TDA11)(zzsAsHzH11)(ssH20121 . 01tan2tanTDA120111)(20/sssHssssA11111201)(zzszzsAssHzH19211 11) 1(201 zzzz+ + + + + + +2211221101)(zazazbzbbzH10 )()(NnnkNWnxkX1 12N1 12N10 10 )()()(NnnkNNnnkNnnWnxWnxkX为奇数为偶数12/0)12(12/02) 12()2(NrkrNNrrkNWrxWrx12/02212/021)()(NrrkNkNNrrkNWrxWWrx12/02/212/02/1)()()(Nrr

5、kNkNNrrkNWrxWWrxkX)()(21kXWkXkNWNk- -1xm-1(p)xm-1(q)xm(p)xm(q)x(0)x(4)x(2)x(6)x(1)x(5)x(3)x(7)WN0 x(7)x(6)x(5)x(4)x(3)x(2)x(1)x(0)-1 1-1 1-1 1WN0WN0WN0-1 1-1 1WN0WN2WN0WN2-1 1-1 1-1 1WN0WN1WN2WN3-1 1-1 1-1 1-1 1程序存储器程序存储器 sine1 E000E1FF正弦系数表正弦系数表cosine1 E200 E3FF余弦系数表余弦系数表fft_prg E400 E4A2程序代码程序代码 .

6、vectors FF80 FFFF复位向量和复位向量和中断向量表中断向量表 数据存储器数据存储器 00000000005005F F 存储映像存储映像寄存器寄存器.bss 006000600061006100620062 暂存单元暂存单元stack 00630063006006C C 堆堆 栈栈 sine 040004000505FFFF 正弦系数表正弦系数表数据存储器数据存储器 cosine 080008000909FFFF余弦系数表余弦系数表 d_input 800080008787FFFF 输入数据输入数据fft_data 880088008 8FFFFFF FFTFFT结果结果( (实

7、部、虚部实部、虚部) ) fft_out 900090009393FFFFFFTFFT结果结果（功率谱）（功率谱） NkjNkeWNkjkN2sin2cos/210)()(NnnkNWnxkX! 9! 7! 5! 3)sin(9753xxxxxx! 8! 6! 4! 21)cos(8642xxxxx)(981761541321 ! 9! 7! 5! 3)sin(22229753xxxxxxxxxxx)(87165143121 ! 8! 6! 4! 21)cos(22228642xxxxxxxxx数据存储器数据存储器d_xs xd_squr_xs x2 2d_temp_s d_sinx sinxc_1_s 7 7FFFHFFFHd_coef_s c1=01C7H c1=01C7H c2=030BH c2=030BH c3=0666H c3=0666H c4=1556H c4=1556H 程序存储器程序存储器table_sc1=1/(8* *9)c2=1/(6* *7)c3=1/(4* *5)c4=1/(2* *3)数据存储器数据存储器d_xc xd_squr_xc x2 2d_temp_c d_cosx cosxc_1_c 7 7FFFHFFFHd_coef_c