Datasheet

Spartan-7 FPGAs Data Sheet: DC and AC Switching Characteristics
DS189 (v1.9) March 13, 2019 www.xilinx.com
Product Specification 21
PPDS_25 PPDS_25 1.25 – 0.125 1.25 + 0.125 0
(5)
–
RSDS_25 RSDS_25 1.25 – 0.125 1.25 + 0.125 0
(5)
–
TMDS_33 TMDS_33 3 – 0.125 3 + 0.125 0
(5)
–
Notes:
1. Input waveform switches between V
L
and V
H
.
2. Measurements are made at typical, minimum, and maximum V
REF
values. Reported delays reflect worst case of these measurements. V
REF
values listed are typical.
3. Input voltage level from which measurement starts.
4. This is an input voltage reference that bears no relation to the V
REF
/ V
MEAS
parameters found in IBIS models and/or noted in Figure 1.
5. The value given is the differential input voltage.
Table 19: Input Delay Measurement Methodology (Cont’d)
Description I/O Standard Attribute V
L
(1)
V
H
(1)
V
MEAS
(3)(5)
V
REF
(2)(4)
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