Start-up latency is the delay between the end of FPGA configuration and the completion of the controller initialization, as marked by entry into the observation state. This latency is a function of the FPGA size (frame count) and the solution clock frequency. It is also a function of the selected correction mode.
The start-up latency is incurred only once. It is not part of the mitigation process.
Table: Maximum Start-Up Latency at ICAP FMax
illustrates start-up latency, decomposed into sub-steps of boot and initialization. The boot time is independent of the selected correction mode, while the initialization time is dependent on the selected correction mode.
Table 2-3:
Maximum Start-Up Latency at ICAP F
Max
|
Device
|
Boot Time at
ICAP F
Max
|
Initialization Time at ICAP
F
Max
(Repair/Replace)
|
Initialization Time at ICAP
F
Max
(Enhanced Repair)
|
|
XC7A12T
|
110 ms
|
8.5 ms
|
1.0 s
|
|
XC7A15T
|
110 ms
|
13.8 ms
|
1.7 s
|
|
XC7A25T
|
110 ms
|
8.5 ms
|
1.0 s
|
|
XC7A35T
|
110 ms
|
13.8 ms
|
1.7 s
|
|
XC7A50T
|
110 ms
|
13.8 ms
|
1.7 s
|
|
XC7A75T
|
110 ms
|
24.1 ms
|
2.9 s
|
|
XC7A100T
|
110 ms
|
24.1 ms
|
2.9 s
|
|
XC7A200T
|
110 ms
|
55.4 ms
|
6.6 s
|
|
XC7K70T
|
110 ms
|
17.8 ms
|
2.1 s
|
|
XC7K160T
|
110 ms
|
38.8 ms
|
4.6 s
|
|
XC7K325T
|
110 ms
|
71.0 ms
|
9.3 s
|
|
XC7K355T
|
110 ms
|
79.9 ms
|
11.9 s
|
|
XC7K410T
|
110 ms
|
91.5 ms
|
15.4 s
|
|
XC7K420T
|
110 ms
|
106.6 ms
|
21.1 s
|
|
XC7K480T
|
110 ms
|
106.6 ms
|
21.1 s
|
|
XC7VX330T
|
110 ms
|
77.3 ms
|
11.1 s
|
|
XC7VX415T
|
110 ms
|
98.1 ms
|
17.7 s
|
|
XC7VX485T
|
110 ms
|
115.7 ms
|
24.5 s
|
|
XC7VX550T
|
110 ms
|
163.5 ms
|
48.7 s
|
|
XC7VH580T (SSI)
|
110 ms
|
74.3 ms
|
10.2 s
|
|
XC7V585T
|
110 ms
|
124.4 ms
|
28.3 s
|
|
XC7VX690T
|
110 ms
|
163.5 ms
|
48.7 s
|
|
XC7VH870T (SSI)
|
110 ms
|
74.3 ms
|
10.2 s
|
|
XC7VX980T
|
110 ms
|
213.3 ms
|
82.6 s
|
|
XC7VX1140T (SSI)
|
110 ms
|
74.3 ms
|
10.2 s
|
|
XC7V2000T (SSI)
|
110 ms
|
95.4 ms
|
16.7 s
|
|
XC7Z007S
|
110 ms
|
12.2 ms
|
1.5 s
|
|
XC7Z012S
|
110 ms
|
21.7 ms
|
2.6 s
|
|
XC7Z014S
|
110 ms
|
24.2 ms
|
2.9 s
|
|
XC7Z010
|
110 ms
|
12.2 ms
|
1.5 s
|
|
XC7Z015
|
110 ms
|
21.7 ms
|
2.6 s
|
|
XC7Z020
|
110 ms
|
24.2 ms
|
2.9 s
|
|
XC7Z030
|
110 ms
|
34.1 ms
|
4.1 s
|
|
XC7Z035
|
110 ms
|
82.0 ms
|
11.8 s
|
|
XC7Z045
|
110 ms
|
82.0 ms
|
11.8 s
|
|
XC7Z100
|
110 ms
|
103.4 ms
|
19.6 s
|
|
XC7S6
|
110 ms
|
3.8 ms
|
1.0 s
|
|
XC7S15
|
110 ms
|
3.8 ms
|
1.0 s
|
|
XC7S25
|
110 ms
|
8.5 ms
|
1.0 s
|
|
XC7S50
|
110 ms
|
13.8 ms
|
1.7 s
|
|
XC7S75
|
110 ms
|
23.8 ms
|
2.9 s
|
|
XC7S100
|
110 ms
|
23.8 ms
|
2.9 s
|
The start-up latency is the sum of the boot and initialization latency, using the correct column of initialization latency data for the selected correction mode. The start-up latency at the actual frequency of operation can be estimated using data from
Table: Maximum Start-Up Latency at ICAP FMax
and
This Equation
.
Equation 2-1
