参数资料
型号: LFECP33E-3FN672C
厂商: Lattice Semiconductor Corporation
文件页数: 77/163页
文件大小: 0K
描述: IC FPGA 32.8KLUTS 496I/O 672-BGA
产品培训模块: LatticeECP3 Introduction
标准包装: 40
系列: ECP
逻辑元件/单元数: 32800
RAM 位总计: 434176
输入/输出数: 496
电源电压: 1.14 V ~ 1.26 V
安装类型: 表面贴装
工作温度: 0°C ~ 85°C
封装/外壳: 672-BBGA
供应商设备封装: 672-FPBGA(27x27)
2-17
Architecture
LatticeECP/EC Family Data Sheet
Figure 2-20. MAC sysDSP Element
MULTADD sysDSP Element
In this case, the operands A0 and B0 are multiplied and the result is added/subtracted with the result of the multi-
plier operation of operands A1 and A2. The user can enable the input, output and pipeline registers. Figure 2-21
shows the MULTADD sysDSP element.
Figure 2-21. MULTADD
Multiplier
x
n
m
m+n
(default)
m+n+16 bits
(default)
m+n+16 bits
(default)
Input Data
Register B
Input Data
Register A
m
n
m
n
m
Overflo
w
Register
Output
Register
Accumulator
Multiplier
Multiplicand
SignedAB
Shift Register A In
Shift Register B In
Shift Register A Out
Shift Register B Out
Output
Addn
Accumsload
Pipeline
Register
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
Input
Register
Pipeline
Register
Input
Register
Pipeline
Register
Input
Register
Pipeline
Register
To
Accumulator
To
Accumulator
To
Accumulator
Overflow
signal
Multiplier
Add/Sub
Pipe
Reg
Pipe
Reg
n
m
n
m
n
m
n
m
m+n
(default)
m+n+1
(default)
m+n+1
(default)
m+n
(default)
x
n
m
n
m
n
n
m
Multiplier B0
Multiplicand A0
Multiplier B1
Multiplicand A1
Signed
Shift Register A In
Shift Register B In
Shift Register A Out
Shift Register B Out
Output
Addn
Pipeline
Register
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
Input
Register
Pipeline
Register
Input
Register
Pipeline
Register
Pipeline
Register
Input Data
Register A
Input Data
Register A
Input Data
Register B
Input Data
Register B
Output
Register
To Add/Sub
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