xa3s1400a-4ftg256q Xilinx Corp., xa3s1400a-4ftg256q Datasheet - Page 24

• Manufacturer Part Number: xa3s1400a-4ftg256q
• Description: Xa Spartan-3a Automotive Fpga Family Data Sheet
• Manufacturer: Xilinx Corp.

Output Propagation Times
Table 23: Timing for the IOB Output Path
24
Notes:
1.
2.
Clock-to-Output Times
Propagation Times
Set/Reset Times
T
Symbol
The numbers in this table are tested using the methodology presented in
Table 8
This time requires adjustment whenever a signal standard other than LVCMOS25 with 12 mA drive and Fast slew rate is assigned to the data
Output. When this is true, add the appropriate Output adjustment from
T
T
T
IOGSRQ
IOCKP
IOSRP
IOOP
and
Table
When reading from the Output Flip-Flop
(OFF), the time from the active transition at
the OCLK input to data appearing at the
Output pin
The time it takes for data to travel from the
IOB’s O input to the Output pin
Time from asserting the OFF’s SR input to
setting/resetting data at the Output pin
Time from asserting the Global Set Reset
(GSR) input on the
STARTUP_SPARTAN3A primitive to
setting/resetting data at the Output pin
11.
Description
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LVCMOS25
drive, Fast slew rate
LVCMOS25
drive, Fast slew rate
LVCMOS25
drive, Fast slew rate
Conditions
Table
(2)
(2)
(2)
Table 26
, 12 mA output
, 12 mA output
, 12 mA output
25.
and are based on the operating conditions set forth in
Device
All
All
All
DS681 (v1.1) February 3, 2009
Speed Grade
Product Specification
Max
3.13
2.91
3.89
9.65
-4
Units
ns
ns
ns
ns
R