FLEX 10K LE Operating Modes FLEX 10K Operating Modes ◆(1) Normal mode Mormal Mode ◆(2) Arithmetic Mode o(3)Up/Down Counter Mode o(4)Clearable Counter Mode LE-CuDLoea ◆(1) Normal mode 4输入LUT组合逻辑输出或寄存器输出 ●通常的逻辑应用和各种译码 ●适合发挥级联链作用 FLEX 10K Operating Modes FLEX典型应用1 Arithme lic Mod Carrin ◆(2) Arithmetic Mode ●两个三输入LUT(本位/进位) O Multiplexer: Wide-fan-in logic 比较器、加法器、累加器 .4-to-1 multiplexer, using cascade chain logic ●支持级联链 . 4Bits@32MHZ, 8Bits@32MHz FLEX典型应用2 FLEX典型应用3 st Adder SUMO 2nd Adder B COUT CIN SUM RST COUT nth Adder SUMn Au Accumulate COUT Ripple Carry Adder: Arithmetic Mode RST COUT Offer the best performance per LE ON-bits Accumulator: Arithmetic Mode .8Bits@120MHZ, 16Bits@70MHz e Fast compact accumulators using the carry chain feature o 8Bits@120MHz, 16Bits@70/90MHz9 56 FLEX 10K LE Operating Modes ‹(1)Normal Mode ‹(2)Arithmetic Mode ‹(3)Up/Down Counter Mode ‹(4)Clearable Counter Mode 57 FLEX 10K Operating Modes ‹(1)Normal Mode z4输入LUT组合逻辑输出 或 寄存器输出 z通常的逻辑应用和各种译码 z适合发挥级联链作用 58 FLEX 10K Operating Modes ‹(2)Arithmetic Mode z两个三输入LUT(本位/进位) z比较器、加法器、累加器 z支持级联链 61 FLEX典型应用1 ‹Multiplexer: Wide-fan-in logic z4-to-1 multiplexer，using cascade chain logic z4Bits@32MHz，8Bits@32MHz 62 FLEX典型应用2 ‹Ripple Carry Adder：Arithmetic Mode zOffer the best performance per LE z8Bits@120MHz，16Bits@70MHz 63 FLEX典型应用3 ‹N-bits Accumulator: Arithmetic Mode zFast & compact accumulators using the carry chain feature z8Bits@120MHz，16Bits@70/90MHz