XC4010L-5PQ208C Xilinx Inc, XC4010L-5PQ208C Datasheet - Page 32

• Manufacturer Part Number: XC4010L-5PQ208C
• Description: IC 3.3V FPGA 400 CLB'S 208-PQFP
• Manufacturer: Xilinx Inc
• Series: XC4000r

Specifications of XC4010L-5PQ208C

• Number Of Logic Elements/cells: 950
• Number Of Labs/clbs: 400
• Total Ram Bits: 12800
• Number Of I /o: 160
• Number Of Gates: 10000
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 208-BFQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 122-1124

XC4000 Series Field Programmable Gate Arrays
Quad Lines (XC4000EX only)
XC4000EX devices also include twelve vertical and twelve
horizontal quad lines per CLB row and column. Quad lines
are four times as long as the single-length lines. They are
interconnected via buffered switch matrices (shown as dia-
monds in
CLBs before entering a buffered switch matrix. They are
grouped in fours, with the buffered switch matrices stag-
gered, so that each line goes through a buffered switch
matrix at every fourth CLB location in that row or column.
(See
The buffered switch matrixes have four pins, one on each
edge. All of the pins are bidirectional. Any pin can drive
any or all of the other pins.
4-36
Figure 30: Quad Lines (XC4000EX only)
Figure
Figure 27 on page
30.)
CLB
CLB
CLB
CLB
CLB
34). Quad lines run past four
CLB
CLB
CLB
CLB
CLB
CLB
CLB
CLB
CLB
CLB
Each buffered switch matrix contains one buffer and six
pass transistors. It resembles the programmable switch
matrix shown in
mable buffer. There can be up to two independent inputs
and up to two independent outputs. Only one of the inde-
pendent inputs can be buffered.
The place and route software automatically uses the timing
requirements of the design to determine whether or not a
quad line signal should be buffered. A heavily loaded sig-
nal is typically buffered, while a lightly loaded one is not.
One scenario is to alternate buffers and pass transistors.
This allows both vertical and horizontal quad lines to be
buffered at alternating buffered switch matrices.
Due to the buffered switch matrices, quad lines are very
fast. They provide the fastest available method of routing
heavily loaded signals for long distances across the device.
CLB
CLB
CLB
CLB
CLB
Figure
September 18, 1996 (Version 1.04)
28, with the addition of a program-
CLB
CLB
CLB
CLB
CLB
X6602