R
DC and Switching Characteristics
Table 14: Recommended Operating Conditions for the DFS
Speed Grade
-5
-4
Symbol
Description
Min
Max
Min
Max
Units
Input Frequency Ranges(2)
FCLKIN
CLKIN_FREQ_FX
Frequency for the CLKIN input
0.2
326
0.2
326
MHz
Notes:
1. DFS specifications apply when either of the DFS outputs (CLKFX or CLKFX180) are in use.
2. If both DFS and DLL outputs are used on the same DCM, follow the more restrictive CLKIN_FREQ_DLL specifications in Table 12.
Table 15: Switching Characteristics for the DFS
Speed Grade
-5
-4
Symbol
Description
Min
Max
Min
Max
Units
Output Frequency Ranges
CLKOUT_FREQ_FX
Frequency for the CLKFX and CLKFX180 outputs
5
326
5
280
MHz
Notes:
1. The numbers in this table are based on the operating conditions set forth in Table 4 and Table 14.
2. DFS specifications apply when either of the DFS outputs (CLKFX or CLKFX180) is in use.
12
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DS312-3 (v1.0) March 1, 2005
Advance Product Specification
XILINX [ XILINX, INC ]
