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ISPLSI5256VE データシートの表示(PDF) - Lattice Semiconductor
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コンポーネント説明
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ISPLSI5256VE
In-System Programmable 3.3V SuperWIDE™ High Density PLD
Lattice Semiconductor
ISPLSI5256VE Datasheet PDF : 24 Pages
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Specifications
ispLSI 5256VE
Figure 6. Boundary Scan Register Circuit for I/O Pins
EXTEST
HIGHZ
SCANIN
(from previous
cell)
1
0
BSCAN
Registers
DQ
BSCAN
Latches
DQ
TOE
Normal
Function
0
OE
1
EXTEST
PROG_MODE
1
DQ
0
DQ
Normal
Function
0
1
I/O Pin
1
DQ
0
SCANOUT
(to next cell)
Shift DR
Clock DR
Update DR
Reset
Figure 7. Boundary Scan Register Circuit for Input-Only Pins
Input Pin
SCANIN
(from previous
0
1
DQ
SCANOUT
(to next cell)
cell)
Shift DR
Clock DR
8
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