XC3S400-4FTG256C Xilinx Inc, XC3S400-4FTG256C Datasheet - Page 39

• Manufacturer Part Number: XC3S400-4FTG256C
• Description: FPGA Spartan®-3 Family 400K Gates 8064 Cells 630MHz 90nm Technology 1.2V 256-Pin FTBGA
• Manufacturer: Xilinx Inc
• Series: Spartan™-3r

Specifications of XC3S400-4FTG256C

• Package: 256FTBGA
• Family Name: Spartan®-3
• Device Logic Units: 8064
• Device System Gates: 400000
• Maximum Internal Frequency: 630 MHz
• Typical Operating Supply Voltage: 1.2 V
• Maximum Number Of User I/os: 173
• Ram Bits: 294912
• Number Of Logic Elements/cells: 8064
• Number Of Labs/clbs: 896
• Total Ram Bits: 294912
• Number Of I /o: 173
• Number Of Gates: 400000
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 256-LBGA
• Dc: 0837
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 122-1342

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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