Xilinx virtex-5 fpga

186 www.xilinx.com Virtex-5 FPGA User Guide
UG190 (v5.0) June 19, 2009
Chapter 5: Configurable Logic Blocks (CLBs)
Implementation of distributed RAM configurations with depth greater than 64 requires the
usage of wide-function multiplexers (F7AMUX, F7BMUX, and F8MUX).
X-Ref Target - Figure 5-11
Figure 5-11: Distributed RAM (RAM64X3SDP)
UG190_5_06_050506
DI1
O[1]
O[2]
O[3]
DI2
unused
unused
WADDR[6:1]
RADDR[6:1]
DATA[1]
DATA[2]
DATA[3]
WCLK
WED
(CLK)
(WE)
6
6
DPRAM32
RAM 64X3SDP
A[6:1]
WA[6:1]
CLK
WE
DI1
DI2
6
6
DPRAM32
A[6:1]
WA[6:1]
CLK
WE
O6
DI1
DI2
DI2
B[6:1]
C[6:1]
D[6:1]
A[6:1]
6
6
DPRAM32
A[6:1]
WA[6:1]
CLK
WE
O6
DI1
6
6
DPRAM32
A[6:1]
WA[6:1]
CLK
WE
O6
O5
O5
O5