Virtex-5 FPGA User Guide www.xilinx.com 177
UG190 (v5.0) June 19, 2009
CLB Overview
CLB/Slice Configurations
Table 5-1 summarizes the logic resources in one CLB. Each CLB or slice can be
implemented in one of the configurations listed. Table 5-2 shows the available resources in
all CLBs.
Table 5-1: Logic Resources in One CLB
Slices LUTs Flip-Flops
Arithmetic and
Carry Chains
Distributed RAM
(1)
Shift Registers
(1)
2 8 8 2 256 bits 128 bits
Notes:
1. SLICEM only, SLICEL does not have distributed RAM or shift registers.
Table 5-2: Virtex-5 FPGA Logic Resources Available in All CLBs
Device
CLB Array
Row x Column
Number of
6-Input LUTs
Maximum
Distributed RAM (Kb)
Shift
Register (Kb)
Number of
Flip-Flops
XC5VLX20T 60 x 26 12,480 210 105 12,480
XC5VLX30 80 x 30 19,200 320 160 19,200
XC5VFX30T 80 x 38 20,480 380 190 20,480
XC5VLX30T 80 x 30 19,200 320 160 19,200
XC5VSX35T 80 x 34 21,760 520 260 21,760
XC5VLX50 120 x 30 28,800 480 240 28,800
XC5VLX50T 120 x 30 28,800 480 240 28,800
XC5VSX50T 120 x 34 32,640 780 390 32,640
XC5VFX70T 160 x 38 44,800 820 410 44,800
XC5VLX85 120 x 54 51,840 840 420 51,840
XC5VLX85T 120 x 54 51,840 840 420 51,840
XC5VSX95T 160 x 46 58,880 1,520 760 58,880
XC5VFX100T 160 x 56 64,000 1,240 620 64,000
XC5VLX110 160 x 54 69,120 1,120 560 69,120
XC5VLX110T 160 x 54 69,120 1,120 560 69,120
XC5VFX130T 200 x 56 81,920 1,580 790 81,920
XC5VTX150T 200 x 58 92,800 1,500 750 92,800
XC5VLX155 160 x 76 97,280 1,640 820 97,280
XC5VLX155T 160 x 76 97,280 1,640 820 97,280
XC5VFX200T 240 x 68 122,880 2,280 1140 122,880
XC5VLX220 160 x 108 138,240 2,280 1140 138,240
XC5VLX220T 160 x 108 138,240 2,280 1140 138,240
XC5VSX240T 240 x 78 149,760 4,200 2100 149,760
XC5VTX240T 240 x 78 149,760 2,400 1200 149,760
XC5VLX330 240 x 108 207,360 3,420 1710 207,360
XC5VLX330T 240 x 108 207,360 3,420 1710 207,360