HY 120 "??F???? S?????S?"

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HY 120 "??F???? S?????S?"

• Programming Logic Devices (PLDs)
• (S?s?e?e? ?????aµµat???µe??? ???????)

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H d?µ? µ?a? ROM 2mxn
Sel
0
0/1
0/1
0/1
Sel
1
0/1
0/1
0/1
Sel
a
2
0
0/1
0/1
0/1
decoder
a
1
Address
m
-to-2
a
m
m
1

Sel
2
m
1

0/1
0/1
0/1
Read
d
d
d
Data
0
n
1

n
2

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??a PLD sa? "?a??? ???t?"
?????e? p??e?
?a?
??s?d??
???d??
p????aµµat???µe???
(?????e? ?etaß??te?)
d?a??pte?
(?????e? S??a?t?se??)
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Ge???? d?µ? µ?a? p????aµµat???µe??? ???????
?a?ata??? (Programmable Logic Array PLA)
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??a??aµµa p???? µ?a? PLA
x
x
x
1
2
3
?????aµµat???µe?e?
S??dese??
S?st????a ?R
P
1
P
2
P
3
P
4
S?st????a ??D
f2x1x2x1'x2'x3x1x3
f1x1x2x1x3'x1'x2'x3
f
f
1
2
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S?????sµe?? s??µat??? d?a??aµµa PLA
f1x1x2x1x3'x1'x2'x3
f2x1x2x1'x2'x3x1x3
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?a?ade??µa µ?a? PAL (Programmable Array Logic)
?????aµµat???µe?? ?a?ata?? ???????
f1x1x2x3'x1'x2x3
f2x1'x2' x1x2x3
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??a s?s?e?? p????aµµat?sµ?? PLD
Figure 3.30 A PLD programming unit
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S?s?e?as?a Plastic-leaded chip carrier (PLCC) µe
ßas?
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??µ? ????p????? ?????aµµat???µe??? ???????
S?s?e??? (CPLD)
?p?s?st?µa t?p?? PAL
?p?s?st?µa t?p?? PAL
?p?s?st?µa t?p?? PAL
?p?s?st?µa t?p?? PAL
Complex Programmable logic Device - CPLD
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?µ?µa µ?a? CPLD
?p?s?st?µa t?p?? PAL
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S?s?e?as?a ?a? p????aµµat?sµ?? CPLD


CPLD se s?s?e?as?a QFP (quad flat pack)

???? ?p?????st?
??p?µe?? ?????µa


JTAG (Joint Test Action Group) p????aµµat?sµ??
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??µ? µ?a? FPGA (Field Programmable Gate Array)
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?a?ade??µa ??????? blockLook-up Table (LUT)
x
1
x
x
f
1
2
1
00 01 10 11
0 1
0/1
0
0
1
0
0
1
0
0/1
f
1
1
0
0
0 1
0/1
1
1
1
0/1
(b)
f
x
x
x
x


1
2
x
1
1
2
2
x
1

0 1
1
0
f
1
x
0
1
x
2
x
Look-up Table d?? µetaß??t??
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??a LUT t???? µetaß??t??
0 1
0 1
0 1
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??a tµ?µa µ?a? p????aµµat?sµe??? FPGA
f1 x1x2 f2x2'x3 f f1f2
Figure 3.39 A section of a programmed FPGA
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Custom Chips, Standard Cells, Gate Arrays
f1x1x2x1x3'x1'x2'x3
f2x1x2x1'x2'x3x1x3
??a tµ?µa µe d?? se??e? p???? se ??a standard
cell chip
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??a pa?ata?? p???? t?p?? "sea-of-gates"
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???p???s? ??????? s??a?t?s?? se s?st????a p????
t?p?? "sea-of-gates"
f1x2x3'x1x3
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?????aµµat???µe?? PLA t?po? NOR-NOR(????µe?a
a????sµat??)
f1(x1x2)(x1x2')(x1'x2x3')
f2(x1x2')(x1x3')(x1'x2)
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??a PLA t?p?? NOR-NOR ??a ???p???s? se µ??f?
"a????sµa ????µe???"
f1x1x2x1x3'x1'x2'x3
f2x1x2x1'x2'x3'
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PAL t?p?? NOR ???p???s? se "a????sµa ????µe???"
f1x1x2x1x3'x1'x2'x3
f2x1x2x1'x2'x3'x1'x1
S?st????a NOR
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