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EE101Lecture6

EE101Lecture6 - Introduction to Digital Logic Lecture 6...

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© Mark Redekopp, All rights reserved Introduction to Digital Logic Lecture 6: Minterms / Maxterms 2 & 3 Variable Theorems
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© Mark Redekopp, All rights reserved Application: Channel Selector Given 4 input, digital music channels and 4 output channels Given individual “select” inputs that select 1 input channel to be routed to 1 output channel Channel Selector ICH0 ICH1 ICH2 ICH3 OCH0 OCH1 OCH2 OCH3 ISEL0 ISEL1 ISEL2 ISEL3 OSEL0 OSEL1 OSEL2 OSEL3 4 Input channels 4 Output channels Input Channel Select Output Channel Select 011010101001101 101010110101010 101001010101111 001010101001011
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© Mark Redekopp, All rights reserved Application: Steering Logic 4-input music channels (ICHx) – Select one input channel (use ISELx inputs) – Route to one output channel (use OSELx inputs) 011010101001101 101010110101010 101001010101111 001010101001011 ICH0 ICH1 ICH2 ICH3 IS E L0 IS E L1 IS E L2 IS E L3 OSEL0 OSEL1 OSEL2 OSEL3 OCH 0 OCH 1 OCH 2 OCH 3
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© Mark Redekopp, All rights reserved Application: Steering Logic 1 st Level of AND gates act as barriers only passing 1 channel OR gates combines 3 streams of 0’s with the 1 channel that got passed (i.e. ICH1) 2 nd Level of AND gates passes the channel to only the selected output ICH0 ICH1 ICH2 ICH3 I SEL0 I SEL1 I SEL2 I SEL3 OSEL0 OSE L1 OSEL2 OSEL3 OCH 0 OCH 1 OCH 2 OCH 3 0 0 0 1 0 0 0 1 0 0 0 ICH1 ICH1 1 0 0 0 ICH1 ICH1 ICH1 ICH1 ICH1 0 0 0 0
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