EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 23

• Manufacturer Part Number: EP3C16F256I7N
• Description: Cyclone III
• Manufacturer: Altera

Altera Corporation-Preliminary
March 2007
Single Port
Simple Dual Port
True Dual Port
Table 1–5. Cyclone III Memory Modes
Port Mode
f
f
MultiTrack Interconnect
In the Cyclone III device architecture, interconnections between LEs,
LABs, M9K memory blocks, embedded multipliers, and device I/O pins
are provided by the MultiTrack™ interconnect structure which is a fabric
of routing wires. The MultiTrack interconnect structure consists of
performance-optimized routing lines of different speeds used for inter-
and intra-design block connectivity. The Quartus
automatically optimizes designs by placing the critical path on the fastest
interconnects.
For more information, refer to the MultiTrack Interconnect chapter in the
Cyclone III Device Handbook.
Memory Blocks
Each Cyclone III FPGA M9K memory block provides up to 9 kbits of
on-chip memory capable of operation at up to 260 MHz. The embedded
memory structure consists of columns of M9K memory blocks that can be
configured as RAM, first-in first-out (FIFO) buffers, or ROM. Cyclone III
memory blocks are optimized for applications such as high throughput
packet processing, high definition (HD) line buffers for video processing
functions, and embedded processor program and data storage. The
Quartus II software allows you to take advantage of M9K memory blocks
by instantiating memory using a dedicated megafunction wizard, or by
inferring memory directly from VHDL or Verilog source code.
For more information, refer to the Memory Blocks chapter in the Cyclone
III Device Handbook.
Embedded Multipliers and Digital Signal Processing Support
Cyclone III devices offer up to 288 embedded multiplier blocks and
support the following modes: one individual 18-bit x18-bit multiplier per
block, or two individual 9-bit x 9-bit multipliers per block. The Quartus II
software includes megafunctions that are used to control the mode of
x1, x2, x4, x8, x9, x16, x18, x32 and x36
x1, x2, x4, x8, x9, x16, x18, x32 and x36
x1, x2, x4, x8, x9, x16 and x18
Port Width Configuration
Cyclone III Device Handbook, Volume 1
Cyclone III Device Architecture
®
II software
1–7