000-0046140-111
Page 92 of 169
SLG46140
12.6.1 4-Bit LUT or 14-Bit Counter / Delay Macrocell Used as 4-Bit LUT
Each Macrocell, when programmed for a LUT function, uses a 16-bit register to define their output function:
4-Bit LUT1 is defined by reg<695:680>
Table 63.
4-bit LUT Standard
Digital Functions
Function
MSB
LSB
AND-4
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
NAND-4
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
OR-4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
NOR-4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
XOR-4
0
1
1
0
1
0
0
1
1
0
0
1
0
1
1
0
XNOR-4
1
0
0
1
0
1
1
0
0
1
1
0
1
0
0
1
Table 62. 4-bit LUT1 Truth Table
IN3
IN2
IN1
IN0
OUT
0
0
0
0
reg <680>
0
0
0
1
reg <681>
0
0
1
0
reg <682>
0
0
1
1
reg <683>
0
1
0
0
reg <684>
0
1
0
1
reg <685>
0
1
1
0
reg <686>
0
1
1
1
reg <687>
1
0
0
0
reg <688>
1
0
0
1
reg <689>
1
0
1
0
reg <690>
1
0
1
1
reg <691>
1
1
0
0
reg <692>
1
1
0
1
reg <693>
1
1
1
0
reg <694>
1
1
1
1
reg <695>
Содержание GreenPAK SLG46140
Страница 102: ...000 0046140 111 Page 101 of 169 SLG46140 14 1 Initial Polarity Operations Figure 54 DFF Polarity Operations ...
Страница 103: ...000 0046140 111 Page 102 of 169 SLG46140 Figure 55 DFF Polarity Operations with nReset ...
Страница 104: ...000 0046140 111 Page 103 of 169 SLG46140 Figure 56 DFF Polarity Operations with nSet ...