Generated by Foxit PDF Creator Foxit Software ttp//www.foxitsoftware.comForevaluationonly 第四章基本单元电路 410动态逻辑电路- Domino
1 第四章 基本单元电路 4.10 动态逻辑电路--Domino Generated by Foxit PDF Creator © Foxit Software http://www.foxitsoftware.com For evaluation only
Generated by Foxit PDF Creator Foxit Software ttp//www.foxitsoftware.comForevaluationonly 多米诺( Domino)cMoS电路 Mp B M2 M MN √由一级动态逻辑门和一级静态反相器构成 √实现不带非逻辑 √解决级连问题
2 多米诺（Domino）CMOS电路 A B M1 M2 VDD V V 1 M MP1 N1 out M M P2 N2 由一级动态逻辑门和一级静态反相器构成 实现不带非逻辑 解决级连问题 Generated by Foxit PDF Creator © Foxit Software http://www.foxitsoftware.com For evaluation only
Generated by Foxit PDF Creator Foxit Soft ttp//www.foxitsoftware.comForevaluation Domino logic Out 1 Out2 0→0 PDN In4 PDN n 5
3 Domino Logic In1 In2 PDN In3 Me Mp Ф Ф Out1 In4 PDN In5 Me Mp Ф Ф Out2 Mkp 1 1 1 0 0 0 0 1 Generated by Foxit PDF Creator © Foxit Software http://www.foxitsoftware.com For evaluation only
Generated by Foxit PDF Creator Foxit Software ttp//www.foxitsoftware.comForevaluationonly Why domino? In PDN In PDn In; PDN Ini PDN Like falling dominos
4 Why Domino? Ф Ф Ini PDN Inj Ini Inj PDN Ini PDN Inj Ini PDN Inj Like falling dominos! Generated by Foxit PDF Creator © Foxit Software http://www.foxitsoftware.com For evaluation only
Generated by Foxit PDF Creator Foxit Soft 级连电路中,各级信号会通过一级级的连锁 反应传递电平。好象多米诺骨牌。 V2 预充
5 级连电路中，各级信号会通过一级级的连锁 反应传递电平。好象多米诺骨牌。 Generated by Foxit PDF Creator © Foxit Software http://www.foxitsoftware.com For evaluation only
Generated by Foxit PDF Creator Foxit Software ttp//www.foxitsoftware.comForevaluationonly 多米诺CMOS电路 ①=0v1~V4预充到ⅤDD,与A~E状态无关; ①=T在A~E=1的情况下,对Ⅴ1~V4逐次放电; M B E Ma
6 多米诺CMOS电路 V1～V4预充到VDD，与A～E状态无关； 在A～E＝1的情况下，对V1～V4 逐次放电； 0 1 Generated by Foxit PDF Creator © Foxit Software http://www.foxitsoftware.com For evaluation only
Generated by Foxit PDF Creator Foxit Soft ttp//www.foxitsoftware.comForevaluation Designing with Domino Logic DI DD DD Outl M Out2 PDN PDN Can be eliminated M Inputs=0 during precharge
7 Designing with Domino Logic Mp Me VDD PDN Ф In1 In2 In3 Out1 Ф Mp Me VDD PDN Ф In4 Ф Out2 Mr VDD Inputs = 0 during precharge Can be eliminated! Generated by Foxit PDF Creator © Foxit Software http://www.foxitsoftware.com For evaluation only
Generated by Foxit PDF Creator Foxit Software p: //ww. foxitsoftware com For evaluation only Damino逻辑特点 C E ■通过输出反相器解决动态电路级 联问题 同互补CMoS相反, Domino只 能实现不带非的逻辑 高速度 输入和输出电容小 M2 输出反相器中增加PMOs的宽度可 以进一步提高速度 ■也有电荷分享、电荷泄漏等问题
8 Domino 逻辑特点 通过输出反相器解决动态电路级 联问题 同互补CMOS相反，Domino只 能实现不带非的逻辑 高速度 输入和输出电容小 输出反相器中增加PMOS的宽度可 以进一步提高速度 也有电荷分享、电荷泄漏等问题 A B M1 M2 VDD V V 1 M MP1 N1 out M M P2 N2 Generated by Foxit PDF Creator © Foxit Software http://www.foxitsoftware.com For evaluation only
Generated by Foxit PDF Creator Foxit Software ttp://www.foxitsoftware.comForevaluationonl Domino逻辑的级联 M MOS MP (5 PMOS 接PMOS NMOS|接pMOS 逻辑块 逻辑块 大 接NMOS √接同类下级电路要添加反相器 √需要考虑逻辑合理
9 NMOS VDD PMOS 逻辑块 逻辑块 NMOS PMOS 接 接 接PMOS 接NMOS MN1 MN2 Vout MP1 MP2 接同类下级电路要添加反相器 需要考虑逻辑合理 Domino 逻辑的级联 Generated by Foxit PDF Creator © Foxit Software http://www.foxitsoftware.com For evaluation only
Generated by Foxit PDF Creator Foxit Soft ttp//www.foxitsoftware.comForevaluation np-CMOS Out 1 0 PUN PDN 0→0ut2 0→1 (to PDN) 10
10 np-CMOS In1 In2 PDN In3 Me Mp Ф Ф Out1 In4 PUN In5 Me Ф Mp Ф Out2 (to PDN) 1 1 1 0 0 0 0 1 Generated by Foxit PDF Creator © Foxit Software http://www.foxitsoftware.com For evaluation only