R
QPRO™ XQ4000XL Series QML High-Reliability FPGAs
XQ4000XL CLB Switching Characteristic Guidelines
Testing of switching parameters is modeled after testing methods specified by MIL-M-38510/605. All devices are 100%
functionally tested. Internal timing parameters are derived from measuring internal test patterns. Listed below are
representative values. For more specific, more precise, and worst-case guaranteed data, use the values reported by the
static timing analyzer (TRCE in the Xilinx Development System) and back-annotated to the simulation netlist. All timing
parameters assume worst-case operating conditions (supply voltage and junction temperature). Values apply to all
XQ4000XL devices and expressed in nanoseconds unless otherwise noted.
Speed Grade
Symbol
-3
-1
Units
Description
Combinatorial Delays
Min
Max
Min
Max
F/G inputs to X/Y outputs
F/G inputs via H’ to X/Y outputs
F/G inputs via transparent latch to Q outputs
C inputs via SR/H0 via H to X/Y outputs
C inputs via H1 via H to X/Y outputs
C inputs via DIN/H2 via H to X/Y outputs
TILO
TIHO
TITO
THH0O
THH1O
THH2O
1.6
2.7
2.9
2.5
2.4
2.5
1.5
1.3
2.2
2.2
2.8
1.9
2.0
1.1
ns
ns
ns
ns
ns
ns
ns
C inputs via EC, DIN/H2 to YQ, XQ output (bypass) TCBYP
CLB Fast Carry Logic
Operand inputs (F1, F2, G1, G4) to COUT
Add/Subtract input (F3) to COUT
Initialization inputs (F1, F3) to COUT
CIN through function generators to X/Y outputs
CIN to COUT, bypass function generators
Carry Net Delay, COUT to CIN
TOPCY
TASCY
TINCY
TSUM
TBYP
2.7
3.3
2.0
2.8
0.26
0.32
2.0
2.5
1.5
2.4
0.20
0.25
ns
ns
ns
ns
ns
ns
TNET
Sequential Delays
Clock K to Flip-Flop outputs Q
Clock K to Latch outputs Q
TCKO
TCKLO
2.1
2.1
1.6
1.6
ns
ns
Setup Time before Clock K
F/G inputs
F/G inputs via H
C inputs via H0 through H
C inputs via H1 through H
C inputs via H2 through H
C inputs via DIN
C inputs via EC
C inputs via S/R, going Low (inactive)
CIN input via F/G
TICK
1.1
2.2
2.0
1.9
2.0
0.9
1.0
0.6
2.3
3.4
0.9
1.7
1.6
1.4
1.6
0.7
0.8
0.5
1.9
2.7
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
TIHCK
THH0CK
THH1CK
THH2CK
TDICK
TECCK
TRCK
TCCK
TCHCK
CIN input via F/G and H
Hold Time after Clock K
F/G inputs
F/G inputs via H
C inputs via SR/H0 through H
C inputs via H1 through H
C inputs via DIN/H2 through H
C inputs via DIN/H2
TCKI
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
ns
ns
ns
ns
ns
ns
ns
ns
TCKIH
TCKHH0
TCKHH1
TCKHH2
TCKDI
TCKEC
TCKR
C inputs via EC
C inputs via SR, going Low (inactive)
Clock
Clock High time
Clock Low time
TCH
TCL
3.0
3.0
2.5
2.5
ns
ns
Set/Reset Direct
Width (High)
Delay from C inputs via S/R, going High to Q
TRPW
TRIO
3.0
2.5
ns
ns
3.7
2.8
Global Set/Reset
TMRW
TMRQ
FTOG
19.8
15.0
ns
Minimum GSR Pulse Width
Delay from GSR input to any Q
Toggle Frequency (MHz) (for export control)
See page 14 for TRRI values per device.
166 200
MHz
DS029 (v1.2) February 9, 2000
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