TriMatrix Memory
Figure 2–16. M512 RAM Block LAB Row Interface
C4 and C8
Interconnects
R4 and R8
Interconnects
10
Direct link
Direct link
interconnect
to adjacent LAB
interconnect
to adjacent LAB
dataout
M512 RAM
Block
Direct link
Direct link
interconnect
interconnect
from adjacent LAB
from adjacent LAB
Control
Signals
datain
Clocks
address
2
8
Small RAM Block Local
Interconnect Region
LAB Row Clocks
M4K RAM Blocks
The M4K RAM block includes support for true dual-port RAM. The M4K
RAM block is used to implement buffers for a wide variety of applications
such as storing processor code, implementing lookup schemes, and
implementing larger memory applications. Each block contains
4,608 RAM bits (including parity bits). M4K RAM blocks can be
configured in the following modes:
■
■
■
■
■
■
True dual-port RAM
Simple dual-port RAM
Single-port RAM
FIFO
ROM
Shift register
When configured as RAM or ROM, you can use an initialization file to
pre-load the memory contents.
2–30
Stratix Device Handbook, Volume 1
Altera Corporation
July 2005
ALTERA [ ALTERA CORPORATION ]
