Low Voltage Positive Emitter-Coupled Logic (LVPECL) - Low Voltage Positive Emitter-Coupled Logic (LVPECL) - UG861

Spartan UltraScale+ FPGAs SelectIO Resources User Guide (UG861)
Document ID
UG861
Release Date
2026-04-28
Revision
1.1 English

LVPECL is supported only in HD I/O banks, and is only supported in receive mode.

Table 1. Available I/O Bank Type
HD HP XP5IO
Input Only N/A N/A

The following table lists the allowed attributes for the LVPECL I/O standard. Support is implied for primitives that are derivatives of the primitives listed in the following table (for example: *_DIFF_OUT, *_IBUFDISABLE, or *_INTERMDISABLE). Refer to SelectIO IOB Interface Primitives for all supported derivatives.

Table 2. Allowed Attributes for the LVPECL I/O Standard
Attributes Primitives
IBUFDS OBUFDS or OBUFTDS
IOSTANDARD LVPECL (HD I/O banks only) N/A