参数资料
型号: LFE3-35EA-6FN484C
厂商: LATTICE SEMICONDUCTOR CORP
元件分类: FPGA
中文描述: FPGA, PBGA484
封装: 23 X 23 MM, LEAD FREE, FPBGA-484
文件页数: 53/130页
文件大小: 2667K
代理商: LFE3-35EA-6FN484C
2-26
Architecture
Lattice Semiconductor
LatticeECP3 Family Data Sheet
MMAC DSP Element
The LatticeECP3 supports a MAC with two multipliers. This is called Multiply Multiply Accumulate or MMAC. In this
case, the two operands, AA and AB, are multiplied and the result is added with the previous accumulated value and
with the result of the multiplier operation of operands BA and BB. This accumulated value is available at the output.
The user can enable the input and pipeline registers, but the output register is always enabled. The output register
is used to store the accumulated value. The ALU is configured as the accumulator in the sysDSP slice. A registered
overflow signal is also available. The overflow conditions are provided later in this document. Figure 2-28 shows the
MMAC sysDSP element.
Figure 2-28. MMAC sysDSP Element
R= A ± B ± C
R = Logic (B, C)
AA
AB
BA
BB
MULTA
MULTB
BMUX
AMUX
CMUX
ALU
A_ALU
B_ALU
IR
PR
OR
Rounding
A_ALU
OPCODE
C
CIN
COUT
SROB
SROA
SRIB
SRIA
C_ALU
0
00
From FPGA Core
To FPGA Core
IR = Input Register
PR = Pipeline Register
OR = Output Register
FR = Flag Register
Next
DSP Slice
Previous
DSP Slice
IR
OR
FR
==
PR
IR
PR
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相关代理商/技术参数
参数描述
LFE3-35EA-6FN484I 功能描述:FPGA - 现场可编程门阵列 33.3K LUTs 295 I/O 1.2V -6 Speed IND RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 栅极数量: 逻辑块数量:943 内嵌式块RAM - EBR:1956 kbit 输入/输出端数量:128 最大工作频率:800 MHz 工作电源电压:1.1 V 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-256
LFE3-35EA-6FN672C 功能描述:FPGA - 现场可编程门阵列 33.3K LUTs 310 I/O 1.2V -6 Speed RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 栅极数量: 逻辑块数量:943 内嵌式块RAM - EBR:1956 kbit 输入/输出端数量:128 最大工作频率:800 MHz 工作电源电压:1.1 V 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-256
LFE3-35EA-6FN672I 功能描述:FPGA - 现场可编程门阵列 33.3K LUTs 310 I/O 1.2V -6 Speed IND RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 栅极数量: 逻辑块数量:943 内嵌式块RAM - EBR:1956 kbit 输入/输出端数量:128 最大工作频率:800 MHz 工作电源电压:1.1 V 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-256
LFE3-35EA-6FTN256C 功能描述:FPGA - 现场可编程门阵列 33.3K LUTs 133 I/O 1.2V -6 Speed RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 栅极数量: 逻辑块数量:943 内嵌式块RAM - EBR:1956 kbit 输入/输出端数量:128 最大工作频率:800 MHz 工作电源电压:1.1 V 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-256
LFE3-35EA-6FTN256I 功能描述:FPGA - 现场可编程门阵列 33.3K LUTs 133 I/O 1.2V -6 Speed IND RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 栅极数量: 逻辑块数量:943 内嵌式块RAM - EBR:1956 kbit 输入/输出端数量:128 最大工作频率:800 MHz 工作电源电压:1.1 V 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-256