Kintex-7 FPGAs Data Sheet: DC and AC Switching Characteristics
Table 22 specifies the values of T IOTPHZ and T IOIBUFDISABLE . T IOTPHZ is described as the delay from the T pin to the IOB pad
through the output buffer of an IOB pad, when 3-state is enabled (i.e., a high impedance state). T IOIBUFDISABLE is described
as the IOB delay from IBUFDISABLE to O output. In HP I/O banks, the internal DCI termination turn-off time is always faster
than T IOTPHZ when the DCITERMDISABLE pin is used. In HR I/O banks, the internal IN_TERM termination turn-off time is
always faster than T IOTPHZ when the INTERMDISABLE pin is used.
Table 22: IOB 3-state Output Switching Characteristics
Speed Grade
Symbol
Description
1.0V
0.9V
Units
-3
-2/-2L
-1
-1M
-2L
T IOTPHZ
T IOIBUFDISABLE_HR
T IOIBUFDISABLE_HP
T input to pad high-impedance
IBUF turn-on time from IBUFDISABLE to
O output for HR I/O banks
IBUF turn-on time from IBUFDISABLE to
O output for HP I/O banks
0.76
1.72
1.31
0.86
1.89
1.46
0.99
2.14
1.76
0.99
2.14
1.76
0.62
2.17
1.86
ns
ns
ns
DS182 (v2.8) March 4, 2014
Product Specification
23
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