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ECP2 bảng dữ liệu(PDF) 14 Page - Lattice Semiconductor

tên linh kiện ECP2
Giải thích chi tiết về linh kiện  LatticeECP2/M Family Data Sheet
PDF  386 Pages
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nhà sản xuất  LATTICE [Lattice Semiconductor]
Trang chủ  http://www.latticesemi.com
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ECP2 bảng dữ liệu(HTML) 14 Page - Lattice Semiconductor

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2-11
Architecture
Lattice Semiconductor
LatticeECP2/M Family Data Sheet
Figure 2-9. Clock Divider Connections
Clock Distribution Network
LatticeECP2/M devices have eight quadrant-based primary clocks and eight flexible region-based secondary
clocks/control signals. Two high performance edge clocks are available on each edge of the device to support high
speed interfaces. These clock inputs are selected from external I/Os, the sysCLOCK PLLs, DLLs or routing. These
clock inputs are fed throughout the chip via a clock distribution system.
Primary Clock Sources
LatticeECP2/M devices derive clocks from five primary sources: PLL (GPLL and SPLL) outputs, DLL outputs,
CLKDIV outputs, dedicated clock inputs and routing. LatticeECP2/M devices have two to eight sysCLOCK PLLs
and two DLLs, located on the left and right sides of the device. There are eight dedicated clock inputs, two on each
side of the device, with the exception of the LatticeECP2M 256-fpBGA package devices which have six dedicated
clock inputs on the device. Figure 2-10 shows the primary clock sources.
RST
RELEASE
÷1
÷2
÷4
÷8
CLKO
CLKOP (GPLL)
CLKOP (DLL)
Routing
PLL PAD
CLKOS (GPLL)
CLKOS (DLL)
CLKDIV



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