Figure 2-20. MAC sysDSP Element MULTADD sysDSP Element In this case, the operands A0 and B0 a" />
參數(shù)資料
型號: LFEC33E-3FN672C
廠商: Lattice Semiconductor Corporation
文件頁數(shù): 77/163頁
文件大小: 0K
描述: IC FPGA 32.8KLUTS 672FPBGA
標準包裝: 40
系列: EC
邏輯元件/單元數(shù): 32800
RAM 位總計: 434176
輸入/輸出數(shù): 496
電源電壓: 1.14 V ~ 1.26 V
安裝類型: 表面貼裝
工作溫度: 0°C ~ 85°C
封裝/外殼: 672-BBGA
供應(yīng)商設(shè)備封裝: 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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