Topic4:VLSI for DSP Digital Signal Processing ·Signal&System 。DSP system ·Description for DSP FIR Filter Design Implement ·Digital Filter Specification Design Hardware Implementation Some Examples Digital Down Converter 。 Central Processing Unit h 2021/1/13 ASIC Design,by Yan Bo 22
ASIC Design, by Yan Bo Topic4： VLSI for DSP Digital Signal Processing • Signal & System • DSP system • Description for DSP FIR Filter Design & Implement • Digital Filter • Specification Design • Hardware Implementation Some Examples • Digital Down Converter • Central Processing Unit • …… 2021/1/13 22
Four types basic filters passband s程S花州 H(elo) Low-Pass s加功and Frequency -2π H(e 2 High-Pass Frequency -2T H(ei) 2π Band-Pass Frequency -2元 一元 H(e) 2π Band- Reject Frequency -2π 2πω 2021/1/13 ASIC Design,by Yan Bo 23
2021/1/13 ASIC Design, by Yan Bo 23 Four types basic filters ( ) j H e ( ) j H e ( ) j H e ( ) j H e − 2π −π π 2π ω − 2π −π π 2π ω − 2π −π π 2π ω − 2π −π π 2π ω Low-Pass High-Pass Band-Pass BandReject
Filter Performance Specification Pass band(通带)、Stop band(阻带)、Transition band(过渡带) Passband/Stopband Cutoff frequency(通带/阻带截止频率) Passband Ripple(通带内波纹)、Stopband Ripple attenuation(阻带衰减) Roll-off (滚降/滚降率) 2021/1/13 ASIC Design,by Yan Bo 24
2021/1/13 ASIC Design, by Yan Bo 24 Filter Performance Specification Pass band(通带)、Stop band （阻带）、Transition band（过渡带） Passband/Stopband Cutoff frequency（通带/阻带截止频率） Passband Ripple (通带内波纹)、Stopband Ripple attenuation (阻带衰减) Roll-off (滚降/滚降率)
Analog Filter to Digital Filter Analog Filters: √Butterworh（巴特沃尔斯滤波器) √Chebyshev I(契比协夫I型滤波器) Chebyshev II(契比协夫II型滤波器) Elliptic filter(椭圆滤波器) Bessel（贝塞尔滤波器) Digital Signal Processing! 脉冲响应不变法 im=之bn--∑a[n- Digital 阶跃响应不变法 Filters N=0:Nonrecursive equation FIR 双线性变换法 N>=1:Recursive equation IIR or FIR 2021/1/13 ASIC Design,by Yan Bo 25
2021/1/13 ASIC Design, by Yan Bo 25 Analog Filter to Digital Filter Analog Filters： ✓ Butterworth（巴特沃尔斯滤波器） ✓ Chebyshev I（契比协夫I型滤波器） ✓ Chebyshev II（契比协夫II型滤波器） ✓ Elliptic filter（椭圆滤波器） ✓ Bessel（贝塞尔滤波器） 脉冲响应不变法 阶跃响应不变法 双线性变换法 Digital Filters N＝0：Nonrecursive equation FIR = = = − − − N k k M k k y n b x n k a y n k 0 1 [ ] [ ] [ ] N>=1：Recursive equation IIR or FIR Digital Signal Processing！
Topic4:VLSI for DSP Digital Signal Processing ·Signal&System 。DSP system ·Description for DSP FIR Filter Design Implement 。Digital Filter Specification Design Hardware Implementation Some Examples Digital Down Converter 。 Central Processing Unit h国 2021/1/13 ASIC Design,by Yan Bo 26
ASIC Design, by Yan Bo Topic4： VLSI for DSP Digital Signal Processing • Signal & System • DSP system • Description for DSP FIR Filter Design & Implement • Digital Filter • Specification Design • Hardware Implementation Some Examples • Digital Down Converter • Central Processing Unit • …… 2021/1/13 26