
Virtex-E 1.8 V Field Programmable Gate Arrays
R
DS022-3 (v3.0) March 21, 2014
Module 3 of 4
Production Product Specification
13
— OBSOLETE — OBSOLETE — OBSOLETE — OBSOLETE —
CLB Switching Characteristics
Delays originating at F/G inputs vary slightly according to the input used, see
Figure 2. The values listed below are
worst-case. Precise values are provided by the timing analyzer.
Speed Grade(1)
Units
Description
Symbol
Min
-8
-7
-6
Combinatorial Delays
4-input function: F/G inputs to X/Y outputs
TILO
0.19
0.40
0.42
0.47
ns, max
5-input function: F/G inputs to F5 output
TIF5
0.36
0.76
0.8
0.9
ns, max
5-input function: F/G inputs to X output
TIF5X
0.35
0.74
0.8
0.9
ns, max
6-input function: F/G inputs to Y output via F6 MUX
TIF6Y
0.35
0.74
0.9
1.0
ns, max
6-input function: F5IN input to Y output
TF5INY
0.04
0.11
0.20
0.22
ns, max
Incremental delay routing through transparent latch to
XQ/YQ outputs
TIFNCTL
0.27
0.63
0.7
0.8
ns, max
BY input to YB output
TBYYB
0.19
0.38
0.46
0.51
ns, max
Sequential Delays
FF Clock CLK to XQ/YQ outputs
TCKO
0.34
0.78
0.9
1.0
ns, max
Latch Clock CLK to XQ/YQ outputs
TCKLO
0.40
0.77
0.9
1.0
ns, max
Setup and Hold Times before/after Clock CLK
4-input function: F/G Inputs
TICK /
TCKI
0.39 / 0
0.9 / 0
1.0 / 0
1.1 / 0
ns, min
5-input function: F/G inputs
TIF5CK /
TCKIF5
0.55 / 0
1.3 / 0
1.4 / 0
1.5 / 0
ns, min
6-input function: F5IN input
TF5INCK /
TCKF5IN
0.27 / 0
0.6 / 0
0.8 / 0
ns, min
6-input function: F/G inputs via F6 MUX
TIF6CK /
TCKIF6
0.58 / 0
1.3 / 0
1.5 / 0
1.6 / 0
ns, min
BX/BY inputs
TDICK /
TCKDI
0.25 / 0
0.6 / 0
0.7 / 0
0.8 / 0
ns, min
CE input
TCECK /
TCKCE
0.28 / 0
0.55 / 0
0.7 / 0
ns, min
SR/BY inputs (synchronous)
TRCK /
TCKR
0.24 / 0
0.46 / 0
0.52 / 0
0.6 / 0
ns, min
Clock CLK
Minimum Pulse Width, High
TCH
0.56
1.2
1.3
1.4
ns, min
Minimum Pulse Width, Low
TCL
0.56
1.2
1.3
1.4
ns, min
Set/Reset
Minimum Pulse Width, SR/BY inputs
TRPW
0.94
1.9
2.1
2.4
ns, min
Delay from SR/BY inputs to XQ/YQ outputs
(asynchronous)
TRQ
0.39
0.8
0.9
1.0
ns, max
Toggle Frequency (MHz) (for export control)
FTOG
-
416
400
357
MHz
Notes:
1.
A Zero “0” Hold Time listing indicates no hold time or a negative hold time. Negative values can not be guaranteed “best-case”, but
if a “0” is listed, there is no positive hold time.