Tri-State ys MUX Danny Mok Altera HK FAE (amok@altera.com) Copyright 1997 Altera Corporation 2/22/2021P1 favara
Copyright © 1997 Altera Corporation 2/22/2021 P.1 Tri-State vs MUX Danny Mok Altera HK FAE (dmok@altera.com)
Tri-State Buffer a There are two application area for the Tri-State Buffer Internal Tri-State Buffer Logic need a Tri-State Buffer within device EXternal Tri-State Buffer Logic need a Tri-State Buffer at the O pin What Altera can provide Altera will implement Internal Tri-State Buffer with MUX All the lO pad can provide a real Tri-State Buffer But some other Pld vendor can provide Internal tri-State Buffer a is that any design limitation if use Altera Device? Copyright 1997 Altera Corporation 2/22/2021P2 favara
Copyright © 1997 Altera Corporation 2/22/2021 P.2 Tri-State Buffer ◼ There are two application area for the Tri-State Buffer – Internal Tri-State Buffer Logic • need a Tri-State Buffer within Device – External Tri-State Buffer Logic • need a Tri-State Buffer at the I/O pin ◼ What Altera can provide – Altera will implement Internal Tri-State Buffer with MUX – All the I/O pad can provide a real Tri-State Buffer ◼ But some other PLD vendor can provide – Internal Tri-State Buffer ◼ Is that any design limitation if use Altera Device ?
External tri-State Buffer in2 UTPUT DFFA out1 clk1 This Tri-State Buffer for 1/0 pad application Copyright 1997 Altera Corporation 2/22/2021P favara
Copyright © 1997 Altera Corporation 2/22/2021 P.3 External Tri-State Buffer This Tri-State Buffer for I/O pad application
What altera provide for ■■■■ All Altera Device will provide real Tri-State Buffer at the 1/O pad ntrols 尸0 grammable verso门 CLRN Slew-Rate Control VCC Copyright 1997 Altera Corporation 2/22/2021P4 favara
Copyright © 1997 Altera Corporation 2/22/2021 P.4 What Altera Provide for .... All Altera Device will provide real Tri-State Buffer at the I/O pad
Compilation Output 口枫 Go To Equations(1) Fan-Out间 t1:TFLC1_B1.⊥C1A Copyright 1997 Altera Corporation 2/22/2021P favara
Copyright © 1997 Altera Corporation 2/22/2021 P.5 Compilation Output
Internal tri-State Buffer ND2 m吕 Clk1 ouTpuT H out1 Copyright 1997 Altera Corporation Internal Tri-State Buffer Logic 2/22/2021P favara
Copyright © 1997 Altera Corporation 2/22/2021 P.6 Internal Tri-State Buffer Internal Tri-State Buffer Logic
What altera provide <Go To Equati。ns[之 LC1-B1 (16)=DFFC-E0002 GLOBAL( Clk1). vCCvCC) EQ002 C4B18 2#!n48 f lin3 Altera Max+Plus ii will convert Internal Tri-State Buffer to muX Copyright 1997 Altera Corporation 2/22/2021P7 favara
Copyright © 1997 Altera Corporation 2/22/2021 P.7 What Altera Provide.... Altera Max+Plus II will convert Internal Tri-State Buffer to MUX
Can Altera support the following design 2 CLRW out1 clk1 CLRN Copyright 1997 Altera Corporation 2/22/2021P favara
Copyright © 1997 Altera Corporation 2/22/2021 P.8 Can Altera support the following Design ?
Let us see∴ Compiler Compiler Database gIc Netlist Builder s synthesizer Partitioner Fitter Extractor 50 Start Sto Messages- Compiler Error: TRI or OPNDRN buffer 2 can only drive logic [ 16]if connected to a BIDIR pin Use see, Altera can not handle this design, but the other Pld vendor x.can do it. Altera is not good !!!!!!!!!! Copyright 1997 Altera Corporation 2/22/2021P favara
Copyright © 1997 Altera Corporation 2/22/2021 P.9 Let us see ... Use see, Altera can not handle this design, but the other PLD vendor X.... can do it. Altera is not Good !!!!!!!!!!