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SLG46169 Arkusz danych(PDF) 43 Page - Dialog Semiconductor |
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SLG46169 Arkusz danych(HTML) 43 Page - Dialog Semiconductor |
43 / 102 page 000-0046169-105 Page 42 of 101 SLG46169 10.0 Combination Function Macrocells The SLG46169 has nine combination function macrocells that can serve more than one logic or timing function. In each case, they can serve as a Look Up Table (LUT), or as another logic or timing function. See the list below for the functions that can be implemented in these macrocells; • Four macrocells that can serve as either 2-bit LUTs or as D Flip Flops. • Two macrocells that can serve as either 3-bit LUTs or as D Flip Flops. • One macrocell that can serve as either 3-bit LUT or as Pipe Delay • Two macrocells that can serve as either 4-bit LUTs or as 8-Bit Counter / Delays Inputs/Outputs for the nine combination function macrocells are configured from the connection matrix with specific logic functions being defined by the state of NVM bits. When used as a LUT to implement combinatorial logic functions, the outputs of the LUTs can be configured to any user defined function, including the following standard digital logic devices (AND, NAND, OR, NOR, XOR, XNOR, Inverter, Buffer and MUX for 3-bit and 4-bit LUTs). When used as a D Flip Flop / Latch, the source and destination of the inputs and outputs for the DFF/Latches are configured from the connection matrix. All DFF/Latch macrocells have user selection for initial state, and all have the option to connect both the Q and Q Bar outputs to the connection matrix. The macrocells DFF2, DFF3 have an additional input from the matrix that can serve as a nSet or nReset function to the macrocell. The operation of the D Flip-Flop and Latch will follow the functional descriptions below: DFF: CLK is rising edge triggered, then Q = D; otherwise Q will not change Latch: if CLK = 0, then Q = D 10.1 2-Bit LUT or D Flip Flop Macrocells There are four macrocells that can serve as either 2-bit LUTs or as D Flip Flops. When used to implement LUT functions, the 2-bit LUTs each take in two input signals from the connection matrix and produce a single output, which goes back into the connection |
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