XC3S100E Datasheet, PDF (114/193 Pages) Xilinx, Inc – DC and Switching Characteristics

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DC and Switching Characteristics
Table 12: Recommended Operating Conditions for the DLL
Speed Grade
-5
-4
Symbol
Description
Min
Max
Min
Max
Units
Input Frequency Ranges
F_CLKIN CLKIN_FREQ_DLL
Frequency for the CLKIN input
5
326
5⁽²⁾
280
MHz
Notes:
1. DLL specifications apply when any of the DLL outputs (CLK0, CLK90, CLK180, CLK270, CLK2X, CLK2X180, or CLKDV) are in use.
2. Use of the DFS permits lower F_CLKIN frequencies. See Table 14.
Table 13: Switching Characteristics for the DLL
Symbol
Output Frequency Ranges
CLKOUT_FREQ_1X
CLKOUT_FREQ_2X
Description
Speed Grade
-5
-4
Min Max Min Max
Units
Frequency for the CLK0 and CLK180 outputs
Frequency for the CLK90 and CLK270 outputs
Frequency for the CLK2X and CLK2X180
outputs
5 326 5 280
5 165 5 165
10 400 10 330
MHz
MHz
MHz
Notes:
1. The numbers in this table are based on the operating conditions set forth in Table 4 and Table 12.
2. DLL specifications apply when any of the DLL outputs (CLK0, CLK90, CLK180, CLK270, CLK2X, CLK2X180, or CLKDV) are in use.
DS312-3 (v1.0) March 1, 2005
www.xilinx.com
11
Advance Product Specification