ATT3042 查看數據表（PDF） - Unspecified

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ATT3042

Field-Programmable Gate Arrays

Unspecified 

Data Sheet

February 1997

ATT3000 Series Field-Programmable Gate Arrays

Programmable Interconnect (continued)

VCC

VCC

Z = DA • DB • DC • ... • DN

DA

DB

DC

(LOW)

DN

Figure 15A. 3-State Buffers Implement a Wired-AND Function

5-3106(F)

Z = DA • A + DB • B + DC • C + ... + DN • N

WEAK KEEPER CIRCUIT DA

DB

DC

DN

A

B

C

N

Figure 15B. 3-State Buffers Implement a Multiplexer

5-3107(F)

BIDIRECTIONAL

INTERCONNECT

BUFFERS

GLOBAL NET

GG

HG

P40

P41

3 VERTICAL LONG LINES

PER COLUMN

GH

P48

HH

O

S

C

P42

P43

P47

BCL

KIN

P46

.l .lk

.q.ok

.o

O

P

G

M

RST

HORIZONTAL LONG LINE

PULL-UP RESISTOR

HORIZONTAL LONG LINE

OSCILLATOR

AMPLIFIER OUTPUT

DIRECT INPUT OF P47

TO AUXILIARY BUFFER

CRYSTAL OSCILLATOR

BUFFER

3-STATE INPUT

3-STATE CONTROL

3-STATE BUFFER

ALTERNATE BUFFER

Lucent Technologies Inc.

OSCILLATOR

AMPLIFIER INPUT

Figure 16. Lower-Right Corner of ATT3020

5-3108(F)

15

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