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I/O Timing
Table 53. Remote System Upgrade Circuitry Timing Specifications (Part 2 of 2)
Parameter
Minimum
Maximum
Unit
(3)
tRU_nRSTIMER
250
—
ns
Notes to Table 53:
(1) This clock is user-supplied to the remote system upgrade circuitry. If you are using the ALTREMOTE_UPDATE
megafunction, the clock user-supplied to the ALTREMOTE_UPDATE megafunction must meet this specification.
(2) This is equivalent to strobing the reconfiguration input of the ALTREMOTE_UPDATE megafunction high for the
minimum timing specification. refer to the “Remote System Upgrade State Machine” section in the Configuration,
Design Security, and Remote System Upgrades in Arria V Devices chapter.
(3) This is equivalent to strobing the reset_timer input of the ALTREMOTE_UPDATE megafunction high for the
minimum timing specification. For more information, refer to the “User Watchdog Timer” section in the
Configuration, Design Security, and Remote System Upgrades in Arria V Devices chapter.
User Watchdog Internal Oscillator Frequency Specification
Table 54 lists the frequency specifications for the user watchdog internal oscillator.
Table 54. User Watchdog Internal Oscillator Frequency Specifications
Minimum
Typical
Maximum
Unit
5.3
7.9
12.5
MHz
I/O Timing
Altera offers two ways to determine I/O timing—the Excel-based I/O Timing and the
Quartus II Timing Analyzer.
Excel-based I/O timing provides pin timing performance for each device density and
speed grade. The data is typically used prior to designing the FPGA to get an estimate
of the timing budget as part of the link timing analysis.
The Quartus II Timing Analyzer provides a more accurate and precise I/O timing
data based on the specifics of the design after you complete place-and-route.
f
You can download the Excel-based I/O Timing spreadsheet from the Arria V Devices
Documentation webpage.
Programmable IOE Delay
Table 55 lists the Arria V GZ IOE programmable delay settings.
Table 55. IOE Programmable Delay for Arria V GZ Devices (Part 1 of 2)
Fast Model
Available
Slow Model
(1)
(2)
Parameter
Min Offset
Unit
Settings
Industrial
0.464
Commercial
0.493
C3
C4
I3L
I4
D1
D2
D3
D4
D5
64
32
8
0
0
0
0
0
0.924
0.459
2.992
0.924
0.924
1.011
0.503
3.192
1.011
1.011
0.921
0.456
3.047
0.920
0.921
1.006
0.500
3.257
1.006
1.006
ns
ns
ns
ns
ns
0.230
0.244
1.587
1.699
64
64
0.464
0.492
0.464
0.493
Arria V GZ Device Datasheet
December 2013 Altera Corporation