参数资料
型号: EP20K400EFC672-1X
厂商: Altera
文件页数: 45/117页
文件大小: 0K
描述: IC APEX 20KE FPGA 400K 672-FBGA
产品培训模块: Three Reasons to Use FPGA's in Industrial Designs
标准包装: 40
系列: APEX-20K®
LAB/CLB数: 1664
逻辑元件/单元数: 16640
RAM 位总计: 212992
输入/输出数: 488
门数: 1052000
电源电压: 1.71 V ~ 1.89 V
安装类型: 表面贴装
工作温度: 0°C ~ 85°C
封装/外壳: 672-BBGA
供应商设备封装: 672-BGA(27x27)
其它名称: 544-1102
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 to Figure 21:
(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.
Single-Port Mode
The APEX 20K ESB also supports a single-port mode, which is used when
simultaneous reads and writes are not required. See Figure 22.
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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