ep1c6t144i8es Altera Corporation, ep1c6t144i8es Datasheet - Page 7
ep1c6t144i8es
Manufacturer Part Number
ep1c6t144i8es
Description
Cyclone Fpga Family
Manufacturer
Altera Corporation
Datasheet
1.EP1C6T144I8ES.pdf
(97 pages)
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Preliminary Information
Altera Corporation
Figure 3. Direct Link Connection
Direct link interconnect from
block, PLL, or IOE output
left LAB, M4K memory
interconnect
Direct link
to left
Interconnect
LAB Interconnects
The LAB local interconnect can drive LEs within the same LAB. The LAB
local interconnect is driven by column and row interconnects and LE
outputs within the same LAB. Neighboring LABs, PLLs, and M4K RAM
blocks from the left and right can also drive an LAB’s local interconnect
through the direct link connection. The direct link connection feature
minimizes the use of row and column interconnects, providing higher
performance and flexibility. Each LE can drive 30 other LEs through fast
local and direct link interconnects.
connection.
LAB Control Signals
Each LAB contains dedicated logic for driving control signals to its LEs.
The control signals include two clocks, two clock enables, two
asynchronous clears, synchronous clear, asynchronous preset/load,
synchronous load, and add/subtract control signals. This gives a
maximum of 10 control signals at a time. Although synchronous load and
clear signals are generally used when implementing counters, they can
also be used with other functions.
Local
Figure 3
LAB
Cyclone FPGA Family Data Sheet
shows the direct link
Direct link
interconnect
to right
Direct link interconnect from
right LAB, M4K memory
block, PLL, or IOE output
7
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