参数资料
型号: EP20K400FC672-3ES
英文描述: FPGA
中文描述: FPGA的
文件页数: 36/114页
文件大小: 1623K
代理商: EP20K400FC672-3ES
28
Altera Corporation
APEX 20K Programmable Logic Device Family Data Sheet
The programmable register also supports an asynchronous clear function.
Within the ESB, two asynchronous clears are generated from global
signals and the local interconnect. Each macrocell can either choose
between the two asynchronous clear signals or choose to not be cleared.
Either of the two clear signals can be inverted within the ESB. Figure 15
shows the ESB control logic when implementing product-terms.
Figure 15. ESB Product-Term Mode Control Logic
Note:
(1)
APEX 20KE devices have four dedicated clocks.
Parallel Expanders
Parallel expanders are unused product terms that can be allocated to a
neighboring macrocell to implement fast, complex logic functions.
Parallel expanders allow up to 32 product terms to feed the macrocell OR
logic directly, with two product terms provided by the macrocell and 30
parallel expanders provided by the neighboring macrocells in the ESB.
The Quartus II software Compiler can allocate up to 15 sets of up to two
parallel expanders per set to the macrocells automatically. Each set of two
parallel expanders incurs a small, incremental timing delay. Figure 16
shows the APEX 20K parallel expanders.
CLK2
CLKENA2
CLK1
CLKENA1 CLR2
CLR1
Dedicated
Clocks
Global
Signals
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
2 or 4
(1)
4
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相关代理商/技术参数
参数描述
EP20K400FC672-3V 制造商:Rochester Electronics LLC 功能描述:- Bulk
EP20K400FI672-1 制造商:未知厂家 制造商全称:未知厂家 功能描述:Field Programmable Gate Array (FPGA)
EP20K400FI672-1ES 制造商:未知厂家 制造商全称:未知厂家 功能描述:FPGA
EP20K400FI672-2 制造商:未知厂家 制造商全称:未知厂家 功能描述:Field Programmable Gate Array (FPGA)
EP20K400FI672-2ES 制造商:未知厂家 制造商全称:未知厂家 功能描述:FPGA