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SLG46534 Folha de dados(PDF) 50 Page - Dialog Semiconductor |
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SLG46534 Folha de dados(HTML) 50 Page - Dialog Semiconductor |
50 / 172 page SLG46534_DS_107 Page 49 of 171 SLG46534 9.3 3-Bit LUT or D Flip Flop with Set/Reset Macrocells There are five macrocells that can serve as either 3-bit LUTs or as D Flip Flops with Set/Reset inputs. When used to implement LUT functions, the 3-bit LUTs each take in three input signals from the connection matrix and produce a single output, which goes back into the connection matrix. When used to implement D Flip Flop function, the three input signals from the connection matrix go to the data (D) and clock (clk) and Set/Reset (nRST/nSET) inputs for the Flip Flop, with the output going back to the connection matrix. DFF3 has a user selectable option to allow the macrocell output to either come from the Q/nQ output of one D Flip Flop, or two D Flip Flops in series, with the first D Flip Flop triggering on the rising clock edge, and the second D Flip Flop triggering on the falling clock edge. Figure 14. 3-bit LUT0 or DFF3 with RST/SET DFF3 clk D To Connection Matrix Input <12> 8-bits NVM From Connection Matrix Output <70> 1-bit NVM 3-bit LUT0 OUT IN1 IN2 IN0 nRST/nSET From Connection Matrix Output <69> From Connection Matrix Output <68> reg <1223:1216> reg <1187> reg <1471> Selects output from one or two DFF Q/nQ DD Q Q reg <1222> reg <1471> LUT Truth Table reg <1223> DFF or Latch Select reg <1222> Output Select (Q or nQ) reg <1221> DFF nRST or nSET Select reg <1220> DFF Initial Polarity Select 0: 3-bit LUT0 IN1 1: DFF3 D 0: 3-bit LUT0 IN2 1: DFF3 nRST/nSET 0: 3-bit LUT0 OUT 1: DFF3 OUT 0: 3-bit LUT0 IN0 1: DFF3 clk S0 S1 S0 S1 S0 S1 S0 S1 |
Nº de peça semelhante - SLG46534 |
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Descrição semelhante - SLG46534 |
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