XC3S1000-4FG320I Xilinx Inc, XC3S1000-4FG320I Datasheet - Page 39

• Manufacturer Part Number: XC3S1000-4FG320I
• Description: FPGA Spartan®-3 Family 1M Gates 17280 Cells 630MHz 90nm Technology 1.2V 320-Pin FBGA
• Manufacturer: Xilinx Inc

Specifications of XC3S1000-4FG320I

• Package: 320FBGA
• Family Name: Spartan®-3
• Device Logic Units: 17280
• Device System Gates: 1000000
• Maximum Internal Frequency: 630 MHz
• Typical Operating Supply Voltage: 1.2 V
• Maximum Number Of User I/os: 221
• Ram Bits: 442368

DS099-2 (v2.5) December 4, 2009
Product Specification
Notes:
1.
2.
P represents the integer value ranging from –255 to +255 to which the PHASE_SHIFT attribute is assigned.
N is an integer value ranging from –255 to +255 that represents the net phase shift effect from a series of increment and/or
decrement operations.
N = {Total number of increments} – {Total number of decrements}
A positive value for N indicates a net increment; a negative value indicates a net decrement.
a. CLKOUT_PHASE_SHIFT = NONE
b. CLKOUT_PHASE_SHIFT = FIXED
c. CLKOUT_PHASE_SHIFT = VARIABLE
R
Shift Range over all P Values:
Shift Range over all P Values:
Shift Range over all N Values:
CLKFB before
CLKFB after
Decrement
Decrement
CLKIN
CLKFB
CLKIN
CLKFB
CLKIN
Figure 21: Phase Shifter Waveforms
–255
–255
www.xilinx.com
–255
Spartan-3 FPGA Family: Functional Description
0
0
256
256
P
P
256
N
* T
* T
* T
CLKIN
CLKIN
CLKIN
0
+255
+255
DS099-2_11_031303
+255
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