xa3sd3400a Xilinx Corp., xa3sd3400a Datasheet - Page 23

• Manufacturer Part Number: xa3sd3400a
• Description: Xa Spartan-3a Dsp Automotive Fpga Family Data Sheet
• Manufacturer: Xilinx Corp.

Three-State Output Propagation Times
Table 25: Timing for the IOB Three-State Path
DS705 (v1.1) January 20, 2009
Product Specification
Notes:
1.
2.
Synchronous Output Enable/Disable Times
T
T
Asynchronous Output Enable/Disable Times
T
Set/Reset Times
T
T
IOCKHZ
IOCKON
GTS
IOSRHZ
IOSRON
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
(2)
(2)
and
R
Table
Time from the active transition at the OTCLK input
of the Three-state Flip-Flop (TFF) to when the
Output pin enters the high-impedance state
Time from the active transition at TFF’s OTCLK
input to when the Output pin drives valid data
Time from asserting the Global Three State (GTS)
input on the STARTUP_SPARTAN3A primitive to
when the Output pin enters the high-impedance
state
Time from asserting TFF’s SR input to when the
Output pin enters a high-impedance state
Time from asserting TFF’s SR input at TFF to
when the Output pin drives valid data
11.
Description
www.xilinx.com
XA Spartan-3A DSP Automotive FPGA Family Data Sheet
LVCMOS25, 12 mA
output drive, Fast slew
rate
LVCMOS25, 12 mA
output drive, Fast slew
rate
LVCMOS25, 12 mA
output drive, Fast slew
rate
Table 27
Conditions
Table
26.
and are based on the operating conditions set forth in
Device
All
All
All
All
All
Speed Grade
10.36
Max
1.39
3.35
1.86
3.82
-4
Units
ns
ns
ns
ns
ns
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