ep1sgx25d Altera Corporation, ep1sgx25d Datasheet - Page 99

• Manufacturer Part Number: ep1sgx25d
• Description: Stratix Gx Device Family Data Sheet
• Manufacturer: Altera Corporation

Figure 4–18. M-RAM Block Control Signals
Altera Corporation
February 2005
Dedicated
Row LAB
Clocks
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
One of the M-RAM block’s horizontal sides drive the address and control
signal (clock, renwe, byteena, etc.) inputs. Typically, the horizontal side
closest to the device perimeter contains the interfaces. The one exception
is when two M-RAM blocks are paired next to each other. In this case, the
side of the M-RAM block opposite the common side of the two blocks
contains the input interface. The top and bottom sides of any M-RAM
block contain data input and output interfaces to the logic array. The top
side has 72 data inputs and 72 data outputs for port B, and the bottom side
has another 72 data inputs and 72 data outputs for port A.
shows an example floorplan for the EP1SGX40 device and the location of
the M-RAM interfaces.
8
clock_a
clocken_a
clock_b
clocken_b
Stratix GX Device Handbook, Volume 1
aclr_a
aclr_b
Stratix GX Architecture
renwe_a
Figure 4–19
renwe_b
4–33