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| 型號(hào)： | EPF10K200S |
| 英文描述： | Programmable Logic |
| 中文描述： | 可編程邏輯 |
| 文件頁(yè)數(shù)： | 53/138頁(yè) |
| 文件大小： | 2116K |
| 代理商： | EPF10K200S |
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Altera Corporation
21
FLEX 10K Embedded Programmable Logic Family Data Sheet
Clearable Counter Mode
The clearable counter mode is similar to the up/down counter mode, but
supports a synchronous clear instead of the up/down control. The clear
function is substituted for the cascade-in signal in the up/down counter
mode. Two 3-input LUTs are used: one generates the counter data, and
the other generates the fast carry bit. Synchronous loading is provided by
a 2-to-1 multiplexer. The output of this multiplexer is ANDed with a
synchronous clear signal.
Internal Tri-State Emulation
Internal tri-state emulation provides internal tri-stating without the
limitations of a physical tri-state bus. In a physical tri-state bus, the
tri-state buffers’ output enable (OE) signals select which signal drives the
bus. However, if multiple OE signals are active, contending signals can be
driven onto the bus. Conversely, if no OE signals are active, the bus will
float. Internal tri-state emulation resolves contending tri-state buffers to a
low value and floating buses to a high value, thereby eliminating these
problems. The MAX+PLUS II software automatically implements tri-state
bus functionality with a multiplexer.
Clear & Preset Logic Control
Logic for the programmable register’s clear and preset functions is
controlled by the DATA3, LABCTRL1, and LABCTRL2 inputs to the LE. The
clear and preset control structure of the LE asynchronously loads signals
into a register. Either LABCTRL1 or LABCTRL2 can control the
asynchronous clear. Alternatively, the register can be set up so that
LABCTRL1
implements an asynchronous load. The data to be loaded is
driven to DATA3; when LABCTRL1 is asserted, DATA3 is loaded into the
register.
During compilation, the Quartus and MAX+PLUS II Compilers
automatically select the best control signal implementation. Because the
clear and preset functions are active-low, the Compiler automatically
assigns a logic high to an unused clear or preset.
The clear and preset logic is implemented in one of the following six
modes chosen during design entry:
s
Asynchronous clear
s
Asynchronous preset
s
Asynchronous clear and preset
s
Asynchronous load with clear
s
Asynchronous load with preset
s
Asynchronous load without clear or preset
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EPF10K200SBC356-1 | 功能描述:FPGA - 現(xiàn)場(chǎng)可編程門(mén)陣列 FPGA - Flex 10K 1248 LABs 274 IOs RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256 |
| EPF10K200SBC356-1X | 功能描述:FPGA - 現(xiàn)場(chǎng)可編程門(mén)陣列 FPGA - Flex 10K 1248 LABs 274 IOs RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256 |
| EPF10K200SBC356-2 | 功能描述:FPGA - 現(xiàn)場(chǎng)可編程門(mén)陣列 FPGA - Flex 10K 1248 LABs 274 IOs RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256 |
| EPF10K200SBC356-2X | 功能描述:FPGA - 現(xiàn)場(chǎng)可編程門(mén)陣列 FPGA - Flex 10K 1248 LABs 274 IOs RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256 |
| EPF10K200SBC356-3 | 功能描述:FPGA - 現(xiàn)場(chǎng)可編程門(mén)陣列 FPGA - Flex 10K 1248 LABs 274 IOs RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256 |
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