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APEX20K bảng dữ liệu(PDF) 43 Page - Altera Corporation

tên linh kiện APEX20K
Giải thích chi tiết về linh kiện  Programmable Logic Device Family
PDF  117 Pages
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nhà sản xuất  ALTERA [Altera Corporation]
Trang chủ  http://www.altera.com
Logo ALTERA - Altera Corporation

APEX20K bảng dữ liệu(HTML) 43 Page - Altera Corporation

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Altera Corporation
43
APEX 20K Programmable Logic Device Family Data Sheet
Figure 28 shows how a column IOE connects to the interconnect.
Figure 28. Column IOE Connection to the Interconnect
Dedicated Fast I/O Pins
APEX 20KE devices incorporate an enhancement to support bidirectional
pins with high internal fanout such as PCI control signals. These pins are
called Dedicated Fast I/O pins (FAST1, FAST2, FAST3, and FAST4) and
replace dedicated inputs. These pins can be used for fast clock, clear, or
high fanout logic signal distribution. They also can drive out. The
Dedicated Fast I/O pin data output and tri-state control are driven by
local interconnect from the adjacent MegaLAB for high speed.
Row Interconnect
Column Interconnect
Each IOE can drive column interconnect. In APEX 20KE devices,
IOEs can also drive FastRow interconnect. Each IOE data
and OE signal is driven by local interconnect.
Any LE or ESB can drive
a column pin through a
row, column, and MegaLAB
interconnect.
IOE
IOE
LAB
An LE or ESB can drive a
pin through a local
interconnect for faster
clock-to-output times.
MegaLAB Interconnect



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