参数资料
型号: EPF6024ABC256-1
厂商: Altera
文件页数: 5/52页
文件大小: 0K
描述: IC FLEX 6000 FPGA 24K 256-BGA
产品培训模块: Three Reasons to Use FPGA's in Industrial Designs
标准包装: 40
系列: FLEX 6000
LAB/CLB数: 196
逻辑元件/单元数: 1960
输入/输出数: 218
门数: 24000
电源电压: 3 V ~ 3.6 V
安装类型: 表面贴装
工作温度: 0°C ~ 85°C
封装/外壳: 256-BBGA
供应商设备封装: 256-BGA(27x27)
Altera Corporation
13
FLEX 6000 Programmable Logic Device Family Data Sheet
Figure 6. Cascade Chain Operation
LE Operating Modes
The FLEX 6000 LE can operate in one of the following three modes:
Normal mode
Arithmetic mode
Counter mode
Each of these modes uses LE resources differently. In each mode, seven
available inputs to the LE—the four data inputs from the LAB local
interconnect, the feedback from the programmable register, and the
carry-in and cascade-in from the previous LE—are directed to different
destinations to implement the desired logic function. LAB-wide signals
provide clock, asynchronous clear, synchronous clear, and synchronous
load control for the register. The Altera software, in conjunction with
parameterized functions such as LPM and DesignWare functions,
automatically chooses the appropriate mode for common functions such
as counters, adders, and multipliers. If required, the designer can also
create special-purpose functions to use an LE operating mode for optimal
performance.
Figure 7 shows the LE operating modes.
d[3..0]
LE 2
LUT
d[7..4]
LE 3
LUT
LE
n + 1
LE
n + 1
LUT
d[3..0]
LUT
d[7..4]
LUT
LE 2
LE 3
AND Cascade Chain
OR Cascade Chain
d[(4
n-1)..4(n-1)]
d[(4
n-1)..4(n-1)]
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