Spartan-7 FPGAs Data Sheet: DC and AC Switching Characteristics

DS189 (v1.8) September 28, 2018

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 VL and VH.

2.

Measurements are made at typical, minimum, and maximum VREF values. Reported delays reflect worst case of these measurements. VREF

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 VREF / VMEAS 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

VL(1)

VH(1)

VMEAS(3)(5)

VREF(2)(4)

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