参数资料
型号: EP20K400FC672-3ES
英文描述: FPGA
中文描述: FPGA的
文件页数: 42/114页
文件大小: 1623K
代理商: EP20K400FC672-3ES
Altera Corporation
33
APEX 20K Programmable Logic Device Family Data Sheet
Input/Output Clock Mode
The input/output clock mode contains two clocks. One clock controls all
registers for inputs into the ESB: data input, WE, RE, read address, and
write address. The other clock controls the ESB data output registers. The
ESB also supports clock enable and asynchronous clear signals; these
signals also control the reading and writing of registers independently.
Input/output clock mode is commonly used for applications where the
reads and writes occur at the same system frequency, but require different
clock enable signals for the input and output registers. Figure 21 shows
the ESB in input/output clock mode.
Figure 21. ESB in Input/Output Clock Mode
Notes:
(1)
All registers can be cleared asynchronously by ESB local interconnect signals, global signals, or the chip-wide reset.
(2)
APEX 20KE devices have four dedicated clocks.
Dedicated Clocks
2 or 4
4
D
ENA
Q
D
ENA
Q
D
ENA
Q
D
ENA
Q
D
ENA
Q
data[ ]
rdaddress[ ]
wraddress[ ]
RAM/ROM
128
× 16
256
× 8
512
× 4
1,024
× 2
2,048
× 1
Data In
Read Address
Write Address
Read Enable
Write Enable
Data Out
outclken
inclken
inclock
outclock
D
ENA
Q
Write
Pulse
Generator
rden
wren
Dedicated Inputs &
Global Signals
to MegaLAB,
FastTrack &
Local
Interconnect
(2)
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相关代理商/技术参数
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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