参数资料
型号: LFXP2-17E-7F484C
厂商: LATTICE SEMICONDUCTOR CORP
元件分类: FPGA
中文描述: FPGA, 420 MHz, PBGA484
封装: 23 X 23 MM, FPBGA-484
文件页数: 19/92页
文件大小: 1701K
代理商: LFXP2-17E-7F484C
2-23
Architecture
Lattice Semiconductor
LatticeXP2 Family Data Sheet
MULTADDSUBSUM 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 B1. Additionally the operands A2 and B2 are multiplied and the result is added/
subtracted with the result of the multiplier operation of operands A3 and B3. The result of both addition/subtraction
are added in a summation block. The user can enable the input, output and pipeline registers. Figure 2-23 shows
the MULTADDSUBSUM sysDSP element.
Figure 2-23. MULTADDSUBSUM
Clock, Clock Enable and Reset Resources
Global Clock, Clock Enable (CE) and Reset (RST) signals from routing are available to every DSP block. From four
clock sources (CLK0, CLK1, CLK2, CLK3) one clock is selected for each input register, pipeline register and output
Multiplier
Add/Sub0
x
n
m
m+n
(default)
m+n
(default)
m+n+1
m+n+2
m+n+1
m+n
(default)
m+n
(default)
m
n
m
n
m
n
m
x
n
m
n
m
Multiplier
Add/Sub1
x
n
m
n
m
n
m
n
m
x
n
m
n
m
n
m
SUM
Multiplier B0
Multiplicand A0
Multiplier B1
Multiplicand A1
Multiplier B2
Multiplicand A2
Multiplier B3
Multiplicand A3
Signed A
Shift Register B In
Output
Addn0
Pipeline
Register
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
Input
Register
Pipeline
Register
Input
Register
To Add/Sub0
To Add/Sub0, Add/Sub1
Pipeline
Register
Signed B
Pipeline
Register
Input
Register
To Add/Sub0, Add/Sub1
Pipeline
Register
Input
Register
To Add/Sub1
Addn1
Pipeline
Register
Pipeline
Register
Pipeline
Register
Shift Register A In
Shift Register B Out
Shift Register A Out
Input Data
Register A
Input Data
Register A
Input Data
Register A
Input Data
Register A
Input Data
Register B
Input Data
Register B
Input Data
Register B
Input Data
Register B
Output
Register
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相关代理商/技术参数
参数描述
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