ep2s130 Altera Corporation, ep2s130 Datasheet - Page 41
ep2s130
Manufacturer Part Number
ep2s130
Description
Stratix Ii Device Family Data Sheet
Manufacturer
Altera Corporation
Datasheet
1.EP2S130.pdf
(238 pages)
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Figure 2–21. M4K RAM Block Control Signals
Altera Corporation
May 2007
Dedicated
Row LAB
Clocks
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
The M4K RAM blocks allow for different clocks on their inputs and
outputs. Either of the two clocks feeding the block can clock M4K RAM
block registers (renwe, address, byte enable, datain, and output registers).
Only the output register can be bypassed. The six labclk signals or local
interconnects can drive the control signals for the A and B ports of the
M4K RAM block. ALMs can also control the clock_a, clock_b,
renwe_a, renwe_b, clr_a, clr_b, clocken_a, and clocken_b
signals, as shown in
The R4, C4, and direct link interconnects from adjacent LABs drive the
M4K RAM block local interconnect. The M4K RAM blocks can
communicate with LABs on either the left or right side through these row
resources or with LAB columns on either the right or left with the column
resources. Up to 16 direct link input connections to the M4K RAM Block
are possible from the left adjacent LABs and another 16 possible from the
right adjacent LAB. M4K RAM block outputs can also connect to left and
right LABs through direct link interconnect.
RAM block to logic array interface.
6
clock_a
clock_b
Figure
clocken_a
2–21.
clocken_b
Stratix II Device Handbook, Volume 1
renwe_a
Figure 2–22
renwe_b
Stratix II Architecture
aclr_a
shows the M4K
aclr_b
2–33